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A free, AI-powered research tool for scientific literature

• Dennis O'Dea
• Van der Waals Forces

New & Improved API for Developers

Introducing semantic reader in beta.

Stay Connected With Semantic Scholar Sign Up What Is Semantic Scholar? Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI.

Finding Open Access - Free Journals: Free Journal Article Databases

Free journal article databases.

• Citations and Bibliographies

Finding open access (free) journals

This LibGuide provides a list with active links to assist in finding open access (free) journals.

Options for finding reliable full text journal articles.

Other good sources for journals, newspapers, and more available for free on the Internet:

Google Scholar - A search engine for scholarly publications from peer-reviewed journals, professional societies, books, theses, and other sources.

Highwire Press - Offers free articles in biological, physical and social sciences and medicine. The site includes a search engine. Highwire has also put together a list of links to other large archives of scientific resources (highwire.stanford.edu/lists/largest.dtl)

Public Library of Science - A nonprofit scientific/medical organization making articles available for free.

BioMed Central - Publishes a number of journals that are available as open access, including Environmental Health and Journal of Biology. Others are available free to registered users.

OAIster - Indexes over three million digitized resources worldwide and can be limited to text, images, audio, or video files.

The Directory of Open Access Journals - Includes articles from more that 700 titles from around the world. Ethics in Science and Environmental Politics, Fishery Bulletin, Journal of Construction Education, and Biopolicy are just a few of the titles included.

Scitopia - A federated (“one-stop-shopping”) search portal for publications of a number of professional societies in the areas of science and technology. Over three million documents, including patents and government publications, can be found here.

Scientific Journals International - A Publisher of open-access journals in science, technology, health, education, and social sciences. Links to online issues are included.

Encyclopedia of Life - A collaborative initiative to collect information on every species on earth. Contributing organizations include Smithsonian Institution, Royal Botanic Garden, and American Museum of Natural History.

Internet Public Library - “Information you can trust” with subject indexes, newspapers, magazines, special collections, and more.

WorldCat - Sometimes called the catalog of catalogs, WorldCat lets you search through library holdings from thousands of libraries around the world. Search for everything from books, articles, CDs, DVDs, audio files, and more. This is a great resource for locating material that can be obtained through Interlibrary Loan if it is not available on the Internet.

WolframAlpha - A Wolfram Research resource, this "computational knowledge engine" can answer a wide variety of questions and provide information on various topics. Subjects covered include mathematics, statistics and data analysis, chemistry, engineering, and earth sciences among many more.

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• Last Updated: Jul 19, 2021 10:20 AM
• URL: https://libguides.esf.edu/freejournals

Reference management. Clean and simple.

The top list of academic search engines

1. Google Scholar

4. science.gov, 5. semantic scholar, 6. baidu scholar, get the most out of academic search engines, frequently asked questions about academic search engines, related articles.

Academic search engines have become the number one resource to turn to in order to find research papers and other scholarly sources. While classic academic databases like Web of Science and Scopus are locked behind paywalls, Google Scholar and others can be accessed free of charge. In order to help you get your research done fast, we have compiled the top list of free academic search engines.

Google Scholar is the clear number one when it comes to academic search engines. It's the power of Google searches applied to research papers and patents. It not only lets you find research papers for all academic disciplines for free but also often provides links to full-text PDF files.

• Coverage: approx. 200 million articles
• Abstracts: only a snippet of the abstract is available
• Related articles: ✔
• References: ✔
• Cited by: ✔
• Links to full text: ✔
• Export formats: APA, MLA, Chicago, Harvard, Vancouver, RIS, BibTeX

BASE is hosted at Bielefeld University in Germany. That is also where its name stems from (Bielefeld Academic Search Engine).

• Coverage: approx. 136 million articles (contains duplicates)
• Abstracts: ✔
• Related articles: ✘
• References: ✘
• Cited by: ✘
• Export formats: RIS, BibTeX

CORE is an academic search engine dedicated to open-access research papers. For each search result, a link to the full-text PDF or full-text web page is provided.

• Coverage: approx. 136 million articles
• Links to full text: ✔ (all articles in CORE are open access)
• Export formats: BibTeX

Science.gov is a fantastic resource as it bundles and offers free access to search results from more than 15 U.S. federal agencies. There is no need anymore to query all those resources separately!

• Coverage: approx. 200 million articles and reports
• Links to full text: ✔ (available for some databases)
• Export formats: APA, MLA, RIS, BibTeX (available for some databases)

Semantic Scholar is the new kid on the block. Its mission is to provide more relevant and impactful search results using AI-powered algorithms that find hidden connections and links between research topics.

• Coverage: approx. 40 million articles
• Export formats: APA, MLA, Chicago, BibTeX

Although Baidu Scholar's interface is in Chinese, its index contains research papers in English as well as Chinese.

• Coverage: no detailed statistics available, approx. 100 million articles
• Abstracts: only snippets of the abstract are available
• Export formats: APA, MLA, RIS, BibTeX

RefSeek searches more than one billion documents from academic and organizational websites. Its clean interface makes it especially easy to use for students and new researchers.

• Coverage: no detailed statistics available, approx. 1 billion documents
• Abstracts: only snippets of the article are available
• Export formats: not available

Consider using a reference manager like Paperpile to save, organize, and cite your references. Paperpile integrates with Google Scholar and many popular databases, so you can save references and PDFs directly to your library using the Paperpile buttons:

Google Scholar is an academic search engine, and it is the clear number one when it comes to academic search engines. It's the power of Google searches applied to research papers and patents. It not only let's you find research papers for all academic disciplines for free, but also often provides links to full text PDF file.

Semantic Scholar is a free, AI-powered research tool for scientific literature developed at the Allen Institute for AI. Sematic Scholar was publicly released in 2015 and uses advances in natural language processing to provide summaries for scholarly papers.

BASE , as its name suggest is an academic search engine. It is hosted at Bielefeld University in Germany and that's where it name stems from (Bielefeld Academic Search Engine).

CORE is an academic search engine dedicated to open access research papers. For each search result a link to the full text PDF or full text web page is provided.

Science.gov is a fantastic resource as it bundles and offers free access to search results from more than 15 U.S. federal agencies. There is no need any more to query all those resources separately!

21 Legit Research Databases for Free Journal Articles in 2024

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Written by  Scribendi

Has this ever happened to you? While looking for websites for research, you come across a research paper site that claims to connect academics to a peer-reviewed article database for free.

Intrigued, you search for keywords related to your topic, only to discover that you must pay a hefty subscription fee to access the service. After the umpteenth time being duped, you begin to wonder if there's even such a thing as free journal articles.

Subscription fees and paywalls are often the bane of students and academics, especially those at small institutions who don't provide access to many free article directories and repositories.

Whether you're working on an undergraduate paper, a PhD dissertation, or a medical research study, we want to help you find tools to locate and access the information you need to produce well-researched, compelling, and innovative work.

Below, we discuss why peer-reviewed articles are superior and list out the best free article databases to use in 2024.

Download Our Free Research Database Roundup PDF

Why peer-reviewed scholarly journal articles are more authoritative.

Determining what sources are reliable can be challenging. Peer-reviewed scholarly journal articles are the gold standard in academic research. Reputable academic journals have a rigorous peer-review process.

The peer review process provides accountability to the academic community, as well as to the content of the article. The peer review process involves qualified experts in a specific (often very specific) field performing a review of an article's methods and findings to determine things like quality and credibility.

Peer-reviewed articles can be found in peer-reviewed article databases and research databases, and if you know that a database of journals is reliable, that can offer reassurances about the reliability of a free article. Peer review is often double blind, meaning that the author removes all identifying information and, likewise, does not know the identity of the reviewers. This helps reviewers maintain objectivity and impartiality so as to judge an article based on its merit.

Where to Find Peer-Reviewed Articles

Peer-reviewed articles can be found in a variety of research databases. Below is a list of some of the major databases you can use to find peer-reviewed articles and other sources in disciplines spanning the humanities, sciences, and social sciences.

What Are Open Access Journals?

An open access (OA) journal is a journal whose content can be accessed without payment. This provides scholars, students, and researchers with free journal articles. OA journals use alternate methods of funding to cover publication costs so that articles can be published without having to pass those publication costs on to the reader.

Some of these funding models include standard funding methods like advertising, public funding, and author payment models, where the author pays a fee in order to publish in the journal. There are OA journals that have non-peer-reviewed academic content, as well as journals that focus on dissertations, theses, and papers from conferences, but the main focus of OA is peer-reviewed scholarly journal articles.

The internet has certainly made it easier to access research articles and other scholarly publications without needing access to a university library, and OA takes another step in that direction by removing financial barriers to academic content.

Choosing Wisely

Features of legitimate oa journals.

 There are things to look out for when trying to decide if a free publication journal is legitimate:

Mission statement —The mission statement for an OA journal should be available on their website.

Publication history —Is the journal well established? How long has it been available?

Editorial board —Who are the members of the editorial board, and what are their credentials?

Indexing —Can the journal be found in a reliable database?

Peer review —What is the peer review process? Does the journal allow enough time in the process for a reliable assessment of quality?

Impact factor —What is the average number of times the journal is cited over a two-year period?

Features of Illegitimate OA Journals

There are predatory publications that take advantage of the OA format, and they are something to be wary of. Here are some things to look out for:

Contact information —Is contact information provided? Can it be verified?

Turnaround —If the journal makes dubious claims about the amount of time from submission to publication, it is likely unreliable.

Editorial board —Much like determining legitimacy, looking at the editorial board and their credentials can help determine illegitimacy.

Indexing —Can the journal be found in any scholarly databases?

Peer review —Is there a statement about the peer review process? Does it fit what you know about peer review?

How to Find Scholarly Articles

Identify keywords.

Keywords are included in an article by the author. Keywords are an excellent way to find content relevant to your research topic or area of interest. In academic searches, much like you would on a search engine, you can use keywords to navigate through what is available to find exactly what you're looking for.

Authors provide keywords that will help you easily find their article when researching a related topic, often including general terms to accommodate broader searches, as well as some more specific terms for those with a narrower scope. Keywords can be used individually or in combination to refine your scholarly article search.

Narrow Down Results

Sometimes, search results can be overwhelming, and searching for free articles on a journal database is no exception, but there are multiple ways to narrow down your results. A good place to start is discipline.

What category does your topic fall into (psychology, architecture, machine learning, etc.)? You can also narrow down your search with a year range if you're looking for articles that are more recent.

A Boolean search can be incredibly helpful. This entails including terms like AND between two keywords in your search if you need both keywords to be in your results (or, if you are looking to exclude certain keywords, to exclude these words from the results).

Consider Different Avenues

If you're not having luck using keywords in your search for free articles, you may still be able to find what you're looking for by changing your tactics. Casting a wider net sometimes yields positive results, so it may be helpful to try searching by subject if keywords aren't getting you anywhere.

You can search for a specific publisher to see if they have OA publications in the academic journal database. And, if you know more precisely what you're looking for, you can search for the title of the article or the author's name.

Determining the Credibility of Scholarly Sources

Ensuring that sources are both credible and reliable is crucial to academic research. Use these strategies to help evaluate the usefulness of scholarly sources:

• Peer Review : Look for articles that have undergone a rigorous peer-review process. Peer-reviewed articles are typically vetted by experts in the field, ensuring the accuracy of the research findings.

Tip: To determine whether an article has undergone rigorous peer review, review the journal's editorial policies, which are often available on the journal's website. Look for information about the peer-review process, including the criteria for selecting reviewers, the process for handling conflicts of interest, and any transparency measures in place.

• Publisher Reputation : Consider the reputation of the publisher. Established publishers, such as well-known academic journals, are more likely to adhere to high editorial standards and publishing ethics.
• Author Credentials : Evaluate the credentials and expertise of the authors. Check their affiliations, academic credentials, and past publications to assess their authority in the field.
• Citations and References : Examine the citations and references provided in the article. A well-researched article will cite credible sources to support its arguments and findings. Verify the accuracy of the cited sources and ensure they are from reputable sources.
• Publication Date : Consider the publication date of the article. While older articles may still be relevant, particularly in certain fields, it is best to prioritize recent publications for up-to-date research and findings.
• Journal Impact Factor : Assess the journal's impact factor or other metrics that indicate its influence and reputation within the academic community. Higher impact factor journals are generally considered more prestigious and reliable. 

Tip: Journal Citation Reports (JCR), produced by Clarivate Analytics, is a widely used source for impact factor data. You can access JCR through academic libraries or directly from the Clarivate Analytics website if you have a subscription.

• Peer Recommendations : Seek recommendations from peers, mentors, or professors in your field. They can provide valuable insights and guidance on reputable sources and journals within your area of study.
• Cross-Verification : Cross-verify the information presented in the article with other credible sources. Compare findings, methodologies, and conclusions with similar studies to ensure consistency and reliability.

By employing these strategies, researchers can confidently evaluate the credibility and reliability of scholarly sources, ensuring the integrity of their research contributions in an ever-evolving landscape.

The Top 21 Free Online Journal and Research Databases

Navigating OA journals, research article databases, and academic websites trying to find high-quality sources for your research can really make your head spin. What constitutes a reliable database? What is a useful resource for your discipline and research topic? How can you find and access full-text, peer-reviewed articles?

Fortunately, we're here to help. Having covered some of the ins and outs of peer review, OA journals, and how to search for articles, we have compiled a list of the top 21 free online journals and the best research databases. This list of databases is a great resource to help you navigate the wide world of academic research.

These databases provide a variety of free sources, from abstracts and citations to full-text, peer-reviewed OA journals. With databases covering specific areas of research and interdisciplinary databases that provide a variety of material, these are some of our favorite free databases, and they're totally legit!

CORE is a multidisciplinary aggregator of OA research. CORE has the largest collection of OA articles available. It allows users to search more than 219 million OA articles. While most of these link to the full-text article on the original publisher's site, or to a PDF available for download, five million records are hosted directly on CORE.

CORE's mission statement is a simple and straightforward commitment to offering OA articles to anyone, anywhere in the world. They also host communities that are available for researchers to join and an ambassador community to enhance their services globally. In addition to a straightforward keyword search, CORE offers advanced search options to filter results by publication type, year, language, journal, repository, and author.

CORE's user interface is easy to use and navigate. Search results can be sorted based on relevance or recency, and you can search for relevant content directly from the results screen.

Collection : 219,537,133 OA articles

Other Services : Additional services are available from CORE, with extras that are geared toward researchers, repositories, and businesses. There are tools for accessing raw data, including an API that provides direct access to data, datasets that are available for download, and FastSync for syncing data content from the CORE database.

CORE has a recommender plug-in that suggests relevant OA content in the database while conducting a search and a discovery feature that helps you discover OA versions of paywalled articles. Other features include tools for managing content, such as a dashboard for managing repository output and the Repository Edition service to enhance discoverability.

Good Source of Peer-Reviewed Articles : Yes

Advanced Search Options : Language, author, journal, publisher, repository, DOI, year

2. ScienceOpen

Functioning as a research and publishing network, ScienceOpen offers OA to more than 74 million articles in all areas of science. Although you do need to register to view the full text of articles, registration is free. The advanced search function is highly detailed, allowing you to find exactly the research you're looking for.

The Berlin- and Boston-based company was founded in 2013 to "facilitate open and public communications between academics and to allow ideas to be judged on their merit, regardless of where they come from." Search results can be exported for easy integration with reference management systems.

You can also bookmark articles for later research. There are extensive networking options, including your Science Open profile, a forum for interacting with other researchers, the ability to track your usage and citations, and an interactive bibliography. Users have the ability to review articles and provide their knowledge and insight within the community.

Collection : 74,560,631

Other Services : None

Advanced Search Options :   Content type, source, author, journal, discipline

3. Directory of Open Access Journals

A multidisciplinary, community-curated directory, the Directory of Open Access Journals (DOAJ) gives researchers access to high-quality peer-reviewed journals. It has archived more than two million articles from 17,193 journals, allowing you to either browse by subject or search by keyword.

The site was launched in 2003 with the aim of increasing the visibility of OA scholarly journals online. Content on the site covers subjects from science, to law, to fine arts, and everything in between. DOAJ has a commitment to "increase the visibility, accessibility, reputation, usage and impact of quality, peer-reviewed, OA scholarly research journals globally, regardless of discipline, geography or language."

Information about the journal is available with each search result. Abstracts are also available in a collapsible format directly from the search screen. The scholarly article website is somewhat simple, but it is easy to navigate. There are 16 principles of transparency and best practices in scholarly publishing that clearly outline DOAJ policies and standards.

Collection : 6,817,242

Advanced Search Options :   Subject, journal, year

4. Education Resources Information Center

The Education Resources Information Center (ERIC) of the Institution of Education Sciences allows you to search by topic for material related to the field of education. Links lead to other sites, where you may have to purchase the information, but you can search for full-text articles only. You can also search only peer-reviewed sources.

The service primarily indexes journals, gray literature (such as technical reports, white papers, and government documents), and books. All sources of material on ERIC go through a formal review process prior to being indexed. ERIC's selection policy is available as a PDF on their website.

The ERIC website has an extensive FAQ section to address user questions. This includes categories like general questions, peer review, and ERIC content. There are also tips for advanced searches, as well as general guidance on the best way to search the database. ERIC is an excellent database for content specific to education.

Collection : 1,292,897

Advanced Search Options : Boolean

5. arXiv e-Print Archive

The arXiv e-Print Archive is run by Cornell University Library and curated by volunteer moderators, and it now offers OA to more than one million e-prints.

There are advisory committees for all eight subjects available on the database. With a stated commitment to an "emphasis on openness, collaboration, and scholarship," the arXiv e-Print Archive is an excellent STEM resource.

The interface is not as user-friendly as some of the other databases available, and the website hosts a blog to provide news and updates, but it is otherwise a straightforward math and science resource. There are simple and advanced search options, and, in addition to conducting searches for specific topics and articles, users can browse content by subject. The arXiv e-Print Archive clearly states that they do not peer review the e-prints in the database.

Collection : 1,983,891

Good Source of Peer-Reviewed Articles : No

Advanced Search Options :   Subject, date, title, author, abstract, DOI

6. Social Science Research Network

The Social Science Research Network (SSRN) is a collection of papers from the social sciences community. It is a highly interdisciplinary platform used to search for scholarly articles related to 67 social science topics. SSRN has a variety of research networks for the various topics available through the free scholarly database.

The site offers more than 700,000 abstracts and more than 600,000 full-text papers. There is not yet a specific option to search for only full-text articles, but, because most of the papers on the site are free access, it's not often that you encounter a paywall. There is currently no option to search for only peer-reviewed articles.

You must become a member to use the services, but registration is free and enables you to interact with other scholars around the world. SSRN is "passionately committed to increasing inclusion, diversity and equity in scholarly research," and they encourage and discuss the use of inclusive language in scholarship whenever possible.

Collection : 1,058,739 abstracts; 915,452 articles

Advanced Search Options : Term, author, date, network

7. Public Library of Science

Public Library of Science (PLOS) is a big player in the world of OA science. Publishing 12 OA journals, the nonprofit organization is committed to facilitating openness in academic research. According to the site, "all PLOS content is at the highest possible level of OA, meaning that scientific articles are immediately and freely available to anyone, anywhere."

PLOS outlines four fundamental goals that guide the organization: break boundaries, empower researchers, redefine quality, and open science. All PLOS journals are peer-reviewed, and all 12 journals uphold rigorous ethical standards for research, publication, and scientific reporting.

PLOS does not offer advanced search options. Content is organized by topic into research communities that users can browse through, in addition to options to search for both articles and journals. The PLOS website also has resources for peer reviewers, including guidance on becoming a reviewer and on how to best participate in the peer review process.

Collection : 12 journals

Advanced Search Options : None

8. OpenDOAR

OpenDOAR, or the Directory of Open Access Repositories, is a comprehensive resource for finding free OA journals and articles. Using Google Custom Search, OpenDOAR combs through OA repositories around the world and returns relevant research in all disciplines.

The repositories it searches through are assessed and categorized by OpenDOAR staff to ensure they meet quality standards. Inclusion criteria for the database include requirements for OA content, global access, and categorically appropriate content, in addition to various other quality assurance measures. OpenDOAR has metadata, data, content, preservation, and submission policies for repositories, in addition to two OA policy statements regarding minimum and optimum recommendations.

This database allows users to browse and search repositories, which can then be selected, and articles and data can be accessed from the repository directly. As a repository database, much of the content on the site is geared toward the support of repositories and OA standards.

Collection : 5,768 repositories

Other Services : OpenDOAR offers a variety of additional services. Given the nature of the platform, services are primarily aimed at repositories and institutions, and there is a marked focus on OA in general. Sherpa services are OA archiving tools for authors and institutions.

They also offer various resources for OA support and compliance regarding standards and policies. The publication router matches publications and publishers with appropriate repositories.

There are also services and resources from JISC for repositories for cost management, discoverability, research impact, and interoperability, including ORCID consortium membership information. Additionally, a repository self-assessment tool is available for members.

Advanced Search Options :   Name, organization name, repository type, software name, content type, subject, country, region

9. Bielefeld Academic Search Engine

The Bielefeld Academic Search Engine (BASE) is operated by the Bielefeld University Library in Germany, and it offers more than 240 million documents from more than 8,000 sources. Sixty percent of its content is OA, and you can filter your search accordingly.

BASE has rigorous inclusion requirements for content providers regarding quality and relevance, and they maintain a list of content providers for the sake of transparency, which can be easily found on their website. BASE has a fairly elegant interface. Search results can be organized by author, title, or date.

From the search results, items can be selected and exported, added to favorites, emailed, and searched in Google Scholar. There are basic and advanced search features, with the advanced search offering numerous options for refining search criteria. There is also a feature on the website that saves recent searches without additional steps from the user.

Collection : 276,019,066 documents; 9,286 content providers

Advanced Search Options :   Author, subject, year, content provider, language, document type, access, terms of reuse

10. Digital Library of the Commons Repository

Run by Indiana University, the Digital Library of the Commons (DLC) Repository is a multidisciplinary journal repository that allows users to access thousands of free and OA articles from around the world. You can browse by document type, date, author, title, and more or search for keywords relevant to your topic.

DCL also offers the Comprehensive Bibliography of the Commons, an image database, and a keyword thesaurus for enhanced search parameters. The repository includes books, book chapters, conference papers, journal articles, surveys, theses and dissertations, and working papers. DCL advanced search features drop-down menus of search types with built-in Boolean search options.

Searches can be sorted by relevance, title, date, or submission date in ascending or descending order. Abstracts are included in selected search results, with access to full texts available, and citations can be exported from the same page. Additionally, the image database search includes tips for better search results.

Collection : 10,784

Advanced Search Options :   Author, date, title, subject, sector, region, conference

11. CIA World Factbook

The CIA World Factbook is a little different from the other resources on this list in that it is not an online journal directory or repository. It is, however, a useful free online research database for academics in a variety of disciplines.

All the information is free to access, and it provides facts about every country in the world, which are organized by category and include information about history, geography, transportation, and much more. The World Factbook can be searched by country or region, and there is also information about the world's oceans.

This site contains resources related to the CIA as an organization rather than being a scientific journal database specifically. The site has a user interface that is easy to navigate. The site also provides a section for updates regarding changes to what information is available and how it is organized, making it easier to interact with the information you are searching for.

Collection : 266 countries

12. Paperity

Paperity boasts its status as the "first multidisciplinary aggregator of OA journals and papers." Their focus is on helping you avoid paywalls while connecting you to authoritative research. In addition to providing readers with easy access to thousands of journals, Paperity seeks to help authors reach their audiences and help journals increase their exposure to boost readership.

Paperity has journal articles for every discipline, and the database offers more than a dozen advanced search options, including the length of the paper and the number of authors. There is even an option to include, exclude, or exclusively search gray papers.

Paperity is available for mobile, with both a mobile site and the Paperity Reader, an app that is available for both Android and Apple users. The database is also available on social media. You can interact with Paperity via Twitter and Facebook, and links to their social media are available on their homepage, including their Twitter feed.

Collection : 8,837,396

Advanced Search Options : Title, abstract, journal title, journal ISSN, publisher, year of publication, number of characters, number of authors, DOI, author, affiliation, language, country, region, continent, gray papers

13. dblp Computer Science Bibliography

The dblp Computer Science Bibliography is an online index of major computer science publications. dblp was founded in 1993, though until 2010 it was a university-specific database at the University of Trier in Germany. It is currently maintained by the Schloss Dagstuhl – Leibniz Center for Informatics.

Although it provides access to both OA articles and those behind a paywall, you can limit your search to only OA articles. The site indexes more than three million publications, making it an invaluable resource in the world of computer science. dblp entries are color-coded based on the type of item.

dblp has an extensive FAQ section, so questions that might arise about topics like the database itself, navigating the website, or the data on dblp, in addition to several other topics, are likely to be answered. The website also hosts a blog and has a section devoted to website statistics.

Collection : 5,884,702

14. EconBiz

EconBiz is a great resource for economic and business studies. A service of the Leibniz Information Centre for Economics, it offers access to full texts online, with the option of searching for OA material only. Their literature search is performed across multiple international databases.

EconBiz has an incredibly useful research skills section, with resources such as Guided Walk, a service to help students and researchers navigate searches, evaluate sources, and correctly cite references; the Research Guide EconDesk, a help desk to answer specific questions and provide advice to aid in literature searches; and the Academic Career Kit for what they refer to as Early Career Researchers.

Other helpful resources include personal literature lists, a calendar of events for relevant calls for papers, conferences, and workshops, and an economics terminology thesaurus to help in finding keywords for searches. To stay up-to-date with EconBiz, you can sign up for their newsletter.

Collection : 1,075,219

Advanced Search Options :   Title, subject, author, institution, ISBN/ISSN, journal, publisher, language, OA only

15. BioMed Central

BioMed Central provides OA research from more than 300 peer-reviewed journals. While originally focused on resources related to the physical sciences, math, and engineering, BioMed Central has branched out to include journals that cover a broader range of disciplines, with the aim of providing a single platform that provides OA articles for a variety of research needs. You can browse these journals by subject or title, or you can search all articles for your required keyword.

BioMed Central has a commitment to peer-reviewed sources and to the peer review process itself, continually seeking to help and improve the peer review process. They're "committed to maintaining high standards through full and stringent peer review."

Additionally, the website includes resources to assist and support editors as part of their commitment to providing high-quality, peer-reviewed OA articles.

Collection : 507,212

Other Services : BMC administers the International Standard Randomised Controlled Trial Number (ISRCTN) registry. While initially designed for registering clinical trials, since its creation in 2000, the registry has broadened its scope to include other health studies as well.

The registry is recognized by the International Committee of Medical Journal Editors, as well as the World Health Organization (WHO), and it meets the requirements established by the WHO International Clinical Trials Registry Platform.

The study records included in the registry are all searchable and free to access. The ISRCTN registry "supports transparency in clinical research, helps reduce selective reporting of results and ensures an unbiased and complete evidence base."

Advanced Search Options :   Author, title, journal, list

A multidisciplinary search engine, JURN provides links to various scholarly websites, articles, and journals that are free to access or OA. Covering the fields of the arts, humanities, business, law, nature, science, and medicine, JURN has indexed almost 5,000 repositories to help you find exactly what you're looking for.

Search features are enhanced by Google, but searches are filtered through their index of repositories. JURN seeks to reach a wide audience, with their search engine tailored to researchers from "university lecturers and students seeking a strong search tool for OA content" and "advanced and ambitious students, age 14-18" to "amateur historians and biographers" and "unemployed and retired lecturers."

That being said, JURN is very upfront about its limitations. They admit to not being a good resource for educational studies, social studies, or psychology, and conference archives are generally not included due to frequently unstable URLs.

Collection : 5,064 indexed journals

Other Services : JURN has a browser add-on called UserScript. This add-on allows users to integrate the JURN database directly into Google Search. When performing a search through Google, the add-on creates a link that sends the search directly to JURN CSE. JURN CSE is a search service that is hosted by Google.

Clicking the link from the Google Search bar will run your search through the JURN database from the Google homepage. There is also an interface for a DuckDuckGo search box; while this search engine has an emphasis on user privacy, for smaller sites that may be indexed by JURN, DuckDuckGo may not provide the same depth of results.

Advanced Search Options :   Google search modifiers

Dryad is a digital repository of curated, OA scientific research data. Launched in 2009, it is run by a not-for-profit membership organization, with a community of institutional and publisher members for whom their services have been designed. Members include institutions such as Stanford, UCLA, and Yale, as well as publishers like Oxford University Press and Wiley.

Dryad aims to "promote a world where research data is openly available, integrated with the scholarly literature, and routinely reused to create knowledge." It is free to access for the search and discovery of data. Their user experience is geared toward easy self-depositing, supports Creative Commons licensing, and provides DOIs for all their content.

Note that there is a publishing charge associated if you wish to publish your data in Dryad.  When searching datasets, they are accompanied by author information and abstracts for the associated studies, and citation information is provided for easy attribution.

Collection : 44,458

Advanced Search Options : No

Run by the British Library, the E-Theses Online Service (EThOS) allows you to search over 500,000 doctoral theses in a variety of disciplines. All of the doctoral theses available on EThOS have been awarded by higher education institutions in the United Kingdom.

Although some full texts are behind paywalls, you can limit your search to items available for immediate download, either directly through EThOS or through an institution's website. More than half of the records in the database provide access to full-text theses.

EThOS notes that they do not hold all records for all institutions, but they strive to index as many doctoral theses as possible, and the database is constantly expanding, with approximately 3,000 new records added and 2,000 new full-text theses available every month. The availability of full-text theses is dependent on multiple factors, including their availability in the institutional repository and the level of repository development.

Collection : 500,000+

Advanced Search Options : Abstract, author's first name, author's last name, awarding body, current institution, EThOS ID, year, language, qualifications, research supervisor, sponsor/funder, keyword, title

PubMed is a research platform well-known in the fields of science and medicine. It was created and developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM). It has been available since 1996 and offers access to "more than 33 million citations for biomedical literature from MEDLINE, life science journals, and online books."

While PubMed does not provide full-text articles directly, and many full-text articles may be behind paywalls or require subscriptions to access them, when articles are available from free sources, such as through PubMed Central (PMC), those links are provided with the citations and abstracts that PubMed does provide.

PMC, which was established in 2000 by the NLM, is a free full-text archive that includes more than 6,000,000 records. PubMed records link directly to corresponding PMC results. PMC content is provided by publishers and other content owners, digitization projects, and authors directly.

Collection : 33,000,000+

Advanced Search Options : Author's first name, author's last name, identifier, corporation, date completed, date created, date entered, date modified, date published, MeSH, book, conflict of interest statement, EC/RN number, editor, filter, grant number, page number, pharmacological action, volume, publication type, publisher, secondary source ID, text, title, abstract, transliterated title

20. Semantic Scholar

A unique and easy-to-use resource, Semantic Scholar defines itself not just as a research database but also as a "search and discovery tool." Semantic Scholar harnesses the power of artificial intelligence to efficiently sort through millions of science-related papers based on your search terms.

Through this singular application of machine learning, Semantic Scholar expands search results to include topic overviews based on your search terms, with the option to create an alert for or further explore the topic. It also provides links to related topics.

In addition, search results produce "TLDR" summaries in order to provide concise overviews of articles and enhance your research by helping you to navigate quickly and easily through the available literature to find the most relevant information. According to the site, although some articles are behind paywalls, "the data [they] have for those articles is limited," so you can expect to receive mostly full-text results.

Collection : 203,379,033

Other Services : Semantic Scholar supports multiple popular browsers. Content can be accessed through both mobile and desktop versions of Firefox, Microsoft Edge, Google Chrome, Apple Safari, and Opera.

Additionally, Semantic Scholar provides browser extensions for both Chrome and Firefox, so AI-powered scholarly search results are never more than a click away. The mobile interface includes an option for Semantic Swipe, a new way of interacting with your research results.

There are also beta features that can be accessed as part of the Beta Program, which will provide you with features that are being actively developed and require user feedback for further improvement.

Advanced Search Options : Field of study, date range, publication type, author, journal, conference, PDF

Zenodo, powered by the European Organization for Nuclear Research (CERN), was launched in 2013. Taking its name from Zenodotus, the first librarian of the ancient library of Alexandria, Zenodo is a tool "built and developed by researchers, to ensure that everyone can join in open science." Zenodo accepts all research from every discipline in any file format.

However, Zenodo also curates uploads and promotes peer-reviewed material that is available through OA. A DOI is assigned to everything that is uploaded to Zenodo, making research easily findable and citable. You can sort by keyword, title, journal, and more and download OA documents directly from the site.

While there are closed access and restricted access items in the database, the vast majority of research is OA material. Search results can be filtered by access type, making it easy to view the free articles available in the database.

Collection : 2,220,000+

Advanced Search Options : Access, file type, keywords

Check out our roundup of free research databases as a handy one-page PDF.

How to find peer-reviewed articles.

There are a lot of free scholarly articles available from various sources. The internet is a big place. So how do you go about finding peer-reviewed articles when conducting your research? It's important to make sure you are using reputable sources.

The first source of the article is the person or people who wrote it. Checking out the author can give you some initial insight into how much you can trust what you’re reading. Looking into the publication information of your sources can also indicate whether the article is reliable.

Aspects of the article, such as subject and audience, tone, and format, are other things you can look at when evaluating whether the article you're using is valid, reputable, peer-reviewed material. So, let's break that down into various components so you can assess your research to ensure that you're using quality articles and conducting solid research.

Check the Author

Peer-reviewed articles are written by experts or scholars with experience in the field or discipline they're writing about. The research in a peer-reviewed article has to pass a rigorous evaluation process, so it's a foregone conclusion that the author(s) of a peer-reviewed article should have experience or training related to that research.

When evaluating an article, take a look at the author's information. What credentials does the author have to indicate that their research has scholarly weight behind it? Finding out what type of degree the author has—and what that degree is in—can provide insight into what kind of authority the author is on the subject.

Something else that might lend credence to the author's scholarly role is their professional affiliation. A look at what organization or institution they are affiliated with can tell you a lot about their experience or expertise. Where were they trained, and who is verifying their research?

Identify Subject and Audience

The ultimate goal of a study is to answer a question. Scholarly articles are also written for scholarly audiences, especially articles that have gone through the peer review process. This means that the author is trying to reach experts, researchers, academics, and students in the field or topic the research is based on.

Think about the question the author is trying to answer by conducting this research, why, and for whom. What is the subject of the article? What question has it set out to answer? What is the purpose of finding the information? Is the purpose of the article of importance to other scholars? Is it original content?

Research should also be approached analytically. Is the methodology sound? Is the author using an analytical approach to evaluate the data that they have obtained? Are the conclusions they've reached substantiated by their data and analysis? Answering these questions can reveal a lot about the article's validity.

Format Matters

Reliable articles from peer-reviewed sources have certain format elements to be aware of. The first is an abstract. An abstract is a short summary or overview of the article. Does the article have an abstract? It's unlikely that you're reading a peer-reviewed article if it doesn't. Peer-reviewed journals will also have a word count range. If an article seems far too short or incredibly long, that may be reason to doubt it.

Another feature of reliable articles is the sections the information is divided into. Peer-reviewed research articles will have clear, concise sections that appropriately organize the information. This might include a literature review, methodology, results (in the case of research articles), and a conclusion.

One of the most important sections is the references or bibliography. This is where the researcher lists all the sources of their information. A peer-reviewed source will have a comprehensive reference section.

An article that has been written to reach an academic community will have an academic tone. The language that is used, and the way this language is used, is important to consider. If the article is riddled with grammatical errors, confusing syntax, and casual language, it almost definitely didn't make it through the peer review process.

Also consider the use of terminology. Every discipline is going to have standard terminology or jargon that can be used and understood by other academics in the discipline. The language in a peer-reviewed article is going to reflect that.

If the author is going out of their way to explain simple terms, or terms that are standard to the field or discipline, it's unlikely that the article has been peer reviewed, as this is something that the author would be asked to address during the review process.

Publication

The source of the article will be a very good indicator of the likelihood that it was peer reviewed. Where was the article published? Was it published alongside other academic articles in the same discipline? Is it a legitimate and reputable scholarly publication?

A trade publication or newspaper might be legitimate or reputable, but it is not a scholarly source, and it will not have been subject to the peer review process. Scholarly journals are the best resource for peer-reviewed articles, but it's important to remember that not all scholarly journals are peer reviewed.

It's helpful to look at a scholarly source's website, as peer-reviewed journals will have a clear indication of the peer review process. University libraries, institutional repositories, and reliable databases (and now you have a list of legit ones) can also help provide insight into whether an article comes from a peer-reviewed journal.

Common Research Mistakes to Avoid

Research is a lot of work. Even with high standards and good intentions, it's easy to make mistakes. Perhaps you searched for access to scientific journals for free and found the perfect peer-reviewed sources, but you forgot to document everything, and your references are a mess. Or, you only searched for free online articles and missed out on a ground-breaking study that was behind a paywall.

Whether your research is for a degree or to get published or to satisfy your own inquisitive nature, or all of the above, you want all that work to produce quality results. You want your research to be thorough and accurate.

To have any hope of contributing to the literature on your research topic, your results need to be high quality. You might not be able to avoid every potential mistake, but here are some that are both common and easy to avoid.

Sticking to One Source

One of the hallmarks of good research is a healthy reference section. Using a variety of sources gives you a better answer to your question. Even if all of the literature is in agreement, looking at various aspects of the topic may provide you with an entirely different picture than you would have if you looked at your research question from only one angle.

Not Documenting Every Fact

As you conduct your research, do yourself a favor and write everything down. Everything you include in your paper or article that you got from another source is going to need to be added to your references and cited.

It's important, especially if your aim is to conduct ethical, high-quality research, that all of your research has proper attribution. If you don't document as you go, you could end up making a lot of work for yourself if the information you don't write down is something that later, as you write your paper, you really need.

Using Outdated Materials

Academia is an ever-changing landscape. What was true in your academic discipline or area of research ten years ago may have since been disproven. If fifteen studies have come out since the article that you're using was published, it's more than a little likely that you're going to be basing your research on flawed or dated information.

If the information you're basing your research on isn't as up-to-date as possible, your research won't be of quality or able to stand up to any amount of scrutiny. You don't want all of your hard work to be for naught.

Relying Solely on Open Access Journals

OA is a great resource for conducting academic research. There are high-quality journal articles available through OA, and that can be very helpful for your research. But, just because you have access to free articles, that doesn't mean that there's nothing to be found behind a paywall.

Just as dismissing high-quality peer-reviewed articles because they are OA would be limiting, not exploring any paid content at all is equally short-sighted. If you're seeking to conduct thorough and comprehensive research, exploring all of your options for quality sources is going to be to your benefit.

Digging Too Deep or Not Deep Enough

Research is an art form, and it involves a delicate balance of information. If you conduct your research using only broad search terms, you won't be able to answer your research question well, or you'll find that your research provides information that is closely related to your topic but, ultimately, your findings are vague and unsubstantiated.

On the other hand, if you delve deeply into your research topic with specific searches and turn up too many sources, you might have a lot of information that is adjacent to your topic but without focus and perhaps not entirely relevant. It's important to answer your research question concisely but thoroughly.

Different Types of Scholarly Articles

Different types of scholarly articles have different purposes. An original research article, also called an empirical article, is the product of a study or an experiment. This type of article seeks to answer a question or fill a gap in the existing literature.

Research articles will have a methodology, results, and a discussion of the findings of the experiment or research and typically a conclusion.

Review articles overview the current literature and research and provide a summary of what the existing research indicates or has concluded. This type of study will have a section for the literature review, as well as a discussion of the findings of that review. Review articles will have a particularly extensive reference or bibliography section.

Theoretical articles draw on existing literature to create new theories or conclusions, or look at current theories from a different perspective, to contribute to the foundational knowledge of the field of study.

10 Tips for Navigating Journal Databases

Use the right academic journal database for your search, be that interdisciplinary or specific to your field. Or both!

If it's an option, set the search results to return only peer-reviewed sources.

Start by using search terms that are relevant to your topic without being overly specific.

Try synonyms, especially if your keywords aren't returning the desired results.

Even if you've found some good articles, try searching using different terms.

Explore the advanced search features of the database(s).

Learn to use Booleans (AND, OR, NOT) to expand or narrow your results.

Once you've gotten some good results from a more general search, try narrowing your search.

Read through abstracts when trying to find articles relevant to your research.

Keep track of your research and use citation tools. It'll make life easier when it comes time to compile your references.

7 Frequently Asked Questions

1. how do i get articles for free.

Free articles can be found through free online academic journals, OA databases, or other databases that include OA journals and articles. These resources allow you to access free papers online so you can conduct your research without getting stuck behind a paywall.

Academics don't receive payment for the articles they contribute to journals. There are often, in fact, publication fees that scholars pay in order to publish. This is one of the funding structures that allows OA journals to provide free content so that you don't have to pay fees or subscription costs to access journal articles.

2. How Do I Find Journal Articles?

Journal articles can be found in databases and institutional repositories that can be accessed at university libraries. However, online research databases that contain OA articles are the best resource for getting free access to journal articles that are available online.

Peer-reviewed journal articles are the best to use for academic research, and there are a number of databases where you can find peer-reviewed OA journal articles. Once you've found a useful article, you can look through the references for the articles the author used to conduct their research, and you can then search online databases for those articles, too.

3. How Do I Find Peer-Reviewed Articles?

Peer-reviewed articles can be found in reputable scholarly peer-reviewed journals. High-quality journals and journal articles can be found online using academic search engines and free research databases. These resources are excellent for finding OA articles, including peer-reviewed articles.

OA articles are articles that can be accessed for free. While some scholarly search engines and databases include articles that aren't peer reviewed, there are also some that provide only peer-reviewed articles, and databases that include non-peer-reviewed articles often have advanced search features that enable you to select "peer review only." The database will return results that are exclusively peer-reviewed content.

4. What Are Research Databases?

A research database is a list of journals, articles, datasets, and/or abstracts that allows you to easily search for scholarly and academic resources and conduct research online. There are databases that are interdisciplinary and cover a variety of topics.

For example, Paperity might be a great resource for a chemist as well as a linguist, and there are databases that are more specific to a certain field. So, while ERIC might be one of the best educational databases available for OA content, it's not going to be one of the best databases for finding research in the field of microbiology.

5. How Do I Find Scholarly Articles for Specific Fields?

There are interdisciplinary research databases that provide articles in a variety of fields, as well as research databases that provide articles that cater to specific disciplines. Additionally, a journal repository or index can be a helpful resource for finding articles in a specific field.

When searching an interdisciplinary database, there are frequently advanced search features that allow you to narrow the search results down so that they are specific to your field. Selecting "psychology" in the advanced search features will return psychology journal articles in your search results. You can also try databases that are specific to your field.

If you're searching for law journal articles, many law reviews are OA. If you don't know of any databases specific to history, visiting a journal repository or index and searching "history academic journals" can return a list of journals specific to history and provide you with a place to begin your research.

6. Are Peer-Reviewed Articles Really More Legitimate?

The short answer is yes, peer-reviewed articles are more legitimate resources for academic research. The peer review process provides legitimacy, as it is a rigorous review of the content of an article that is performed by scholars and academics who are experts in their field of study. The review provides an evaluation of the quality and credibility of the article.

Non-peer-reviewed articles are not subject to a review process and do not undergo the same level of scrutiny. This means that non-peer-reviewed articles are unlikely, or at least not as likely, to meet the same standards that peer-reviewed articles do.

7. Are Free Article Directories Legitimate?

Yes! As with anything, some databases are going to be better for certain requirements than others. But, a scholarly article database being free is not a reason in itself to question its legitimacy.

Free scholarly article databases can provide access to abstracts, scholarly article websites, journal repositories, and high-quality peer-reviewed journal articles. The internet has a lot of information, and it's often challenging to figure out what information is reliable. 

Research databases and article directories are great resources to help you conduct your research. Our list of the best research paper websites is sure to provide you with sources that are totally legit.

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How to Find Free Articles on Google Scholar

There are tons of resources for students to find articles online, and Google Scholar is a top pick. Here's how to use it.

Are you working on a research project or simply looking for credible information? Google Scholar can help you find free and credible research articles.

Instead of searching for scholarly articles in a standard Google search, you can use a simpler method to find articles. Google Scholar is a division of Google that focuses on scholarly literature, that way you can easily find articles that you need for your research.

Find Free Articles on Google Scholar

You might enjoy reading insanely weird articles on Wikipedia . However, maybe it's time that you read information from the academics that the world has to offer.

It can be frustrating searching the internet for articles, without finding anything that doesn't require payment. Google Scholar offers a wide variety of research articles, many of which are available for free.

Here's how to find free articles on Google Scholar:

• Head to Google Scholar .
• Type out a keyword search in the search bar.
• When the results are displayed, only check for articles with a PDF text link.
• Click on the link for your desired article.
• Check if the article has a free downloadable link, or if you can read it for free online.
• Once you have found a free article, save the PDF document onto your device or read it online.

Typically, free articles on Google Scholar have a visible PDF text link next to the article title. If you are unlucky, the link will lead you to the publisher's website, where you would have to purchase the article.

However, when the article is free, you can save the document or read it online.

Finding Recently Published Articles

Google Scholar allows you to filter your search to a specific time frame. This way, you can find articles that were recently published, or that were published over 5 to 10 years ago.

To find an article according to the year it was published, click Since Year on Google Scholar's left sidebar. This allows you to find article papers that were published from the specified year. You can also choose whether you want the results page on Google Chrome to sort articles by date or relevance.

Click Sort by date to show just the new additions. If you are not too concerned about when the articles were published, you may click on Any time , which you will find in the left sidebar.

If you are looking for a less academic platform to gather information, you can use LinkedIn as a research tool  instead.

Improve Your Research Skills

Knowing how to research effectively is not an easy skill to have. Luckily, the internet makes life easier in so many ways. One of those ways is helping you research better.

If you are a research student, you might want to find out how to make the most of your search browser. That way you can get the best results from your research.

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Finding Scholarly Articles: Home

What's a Scholarly Article?

Your professor has specified that you are to use scholarly (or primary research or peer-reviewed or refereed or academic) articles only in your paper. What does that mean?

Scholarly or primary research articles are peer-reviewed , which means that they have gone through the process of being read by reviewers or referees  before being accepted for publication. When a scholar submits an article to a scholarly journal, the manuscript is sent to experts in that field to read and decide if the research is valid and the article should be published. Typically the reviewers indicate to the journal editors whether they think the article should be accepted, sent back for revisions, or rejected.

To decide whether an article is a primary research article, look for the following:

• The author’s (or authors') credentials and academic affiliation(s) should be given;
• There should be an abstract summarizing the research;
• The methods and materials used should be given, often in a separate section;
• There are citations within the text or footnotes referencing sources used;
• Results of the research are given;
• There should be discussion   and  conclusion ;
• With a bibliography or list of references at the end.

Caution: even though a journal may be peer-reviewed, not all the items in it will be. For instance, there might be editorials, book reviews, news reports, etc. Check for the parts of the article to be sure.   

You can limit your search results to primary research, peer-reviewed or refereed articles in many databases. To search for scholarly articles in  HOLLIS , type your keywords in the box at the top, and select  Catalog&Articles  from the choices that appear next.   On the search results screen, look for the  Show Only section on the right and click on  Peer-reviewed articles . (Make sure to  login in with your HarvardKey to get full-text of the articles that Harvard has purchased.)

Many of the databases that Harvard offers have similar features to limit to peer-reviewed or scholarly articles.  For example in Academic Search Premier , click on the box for Scholarly (Peer Reviewed) Journals  on the search screen.

Review articles are another great way to find scholarly primary research articles.   Review articles are not considered "primary research", but they pull together primary research articles on a topic, summarize and analyze them.  In Google Scholar , click on Review Articles  at the left of the search results screen. Ask your professor whether review articles can be cited for an assignment.

A note about Google searching.  A regular Google search turns up a broad variety of results, which can include scholarly articles but Google results also contain commercial and popular sources which may be misleading, outdated, etc.  Use Google Scholar  through the Harvard Library instead.

About Wikipedia .  W ikipedia is not considered scholarly, and should not be cited, but it frequently includes references to scholarly articles. Before using those references for an assignment, double check by finding them in Hollis or a more specific subject  database .

Still not sure about a source? Consult the course syllabus for guidance, contact your professor or teaching fellow, or use the Ask A Librarian service.

• Last Updated: Oct 3, 2023 3:37 PM
• URL: https://guides.library.harvard.edu/FindingScholarlyArticles

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“Free Full Text Articles”: Where to Search for Them?

Ashish singh.

Consultant Dermatologist, Parkinsganj, Sultanpur, Uttar Pradesh, India

Manish Singh

1 Department of Neurosurgery, JIPMER, Pondicherry, India

Ajai Kumar Singh

2 Department of Neurology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhooti Khand, Gomti Nagar, Lucknow, Uttar Pradesh, India

Deepti Singh

3 Consultant Psychiatrist, Parkinsganj, Sultanpur, Uttar Pradesh, India

Pratibha Singh

4 Department of Obstetrics and Gynaecology, JIPMER, Pondicherry, India

Abhishek Sharma

5 Department of Surgical Oncology, Rajiv Gandhi Cancer Institute and Research Centre, Delhi, India

References form the backbone of any medical literature. Presently, because of high inflation, it is very difficult for any library/organization/college to purchase all journals. The condition is even worse for an individual person, such as private practitioners. The solution lies in the free availability of full-text articles. Here, the authors share their experiences about the accessibility of free full-text articles.

INTRODUCTION

Presently, in India nearly 314 medical colleges are providing undergraduate medical education in the form of MBBS, 163 colleges are providing doctor of medicine in diploma in Dermatology,Venereology and Leprosy (DVL), and 84 colleges are providing diploma in DVL.[ 1 – 3 ] In addition to this, 27 hospitals are providing diplomate of national board in diploma in Venereology and Dermatology.[ 4 ] On comparing this data with number of research articles published, the latter stands in a mediocre situation. One of the important cause responsible for the relatively less number of research publication is unavailability of free full-text articles. Research works, published by most of the journals, are paid. Many of the undergraduates or postgraduate students may not be able to purchase these high-cost journals or articles. In addition to this, many researchers may not be willing to spend money on journals. These are some of the situations where free full-text articles come for rescue, but many of the beginners may not be familiar about how to search these articles. In addition, free full-text articles are the first choice for many of the postgraduate students for their dissertation.

HOW TO APPROACH

In addition to journals which are fully Open Access, there are few other journals which operate through subscriptions as mainstream journals do, but which offer open access to the electronic versions of their articles after a delay of usually a year, or selectively for individual articles, provided the authors have paid an additional charge to “open up” the articles.[ 5 ]

Free full-text articles can be approached in the following ways.

Medknow Publications

Medknow Publications publish nearly 150 journals. They provide free access to the electronic editions of their journals.[ 6 ] Researchers just have to open the site www.medknow.com , fill the key word they require, and search. Alternatively, they can visit the search option, available in most of their journals site through www.journalonweb.com , fill the key word, and search across multiple journals. At times, this site alone provides sufficient number of references required for the purpose. The important dermatological journals published by Medknow Publications are Indian Dermatology Online Journal, Indian Journal of Dermatology, Indian Journal of Dermatology, Venereology, and Leprology, Indian Journal of Sexually Transmitted Diseases and AIDS, International Journal of Trichology, and Journal of Cutaneous and Aesthetic Surgery.[ 7 ]

PubMed Central and PubMed

PubMed Central is the United States National Library of Medicine's digital archive of biomedical and life sciences journal literature which provides free access to the full text of articles.[ 8 ] To search for free full-text articles on PubMed Central, one has to visit the site http://www.ncbi.nlm.nih.gov/pmc/ , write the topic/author/journal title, and search across all articles.

PubMed is a database of citations and abstracts for articles from thousands of journals. PubMed does not include full-text journal articles.[ 9 ] It includes links to full-text articles at many journal web sites as well as to most of the articles in PubMed Central.[ 10 ] Here, articles can be searched on the site http://www.ncbi.nlm.nih.gov/pubmed . Search can be restricted to contents free on web by using filter your results and clicking free full text.[ 11 ]

Directory of Open Access Journals

The directory aims to cover all open access scientific and scholarly journals that use a quality control system to guarantee the content.[ 12 ] It provides articles from 439 medicinal journals. Among them, 21 are from dermatology.[ 13 ] It includes Anais Brasileiros de Dermatologia, BMC Dermatology, Case Reports in Dermatology, Clinical Dermatology, Clinical Medicine Insights: Dermatology, Clinical, Cosmetic and Investigational Dermatology, Dermatología Peruana, Dermatology Online Journal,th Dermatology Reports, Dermatology Research and Practice, Egyptian Dermatology Online Journal, Indian Journal of Dermatology, Indian Journal of Dermatology, Venereology and Leprology, The Internet Journal of Dermatology, Journal of Clinical and Experimental Dermatology Research, Journal of the Egyptian Women's Dermatologic Society, Open Dermatology Journal, Revista Argentina de Dermatología, Surgical and Cosmetic Dermatology, Turk Dermatoloji Dergisi, Turkderm.[ 14 ] The disadvantage of directory of open access journals is that few of these journals are in languages other than English. Here, articles can be searched on the site http://www.doaj.org .

Electronic Resources in Medicine Consortium and National Medical Library

Electronic Resources in Medicine Consortium (ERMED) and National Medical Library (NML) are an excellent platform for obtaining free of cost recent journal articles for its member colleges. There is no membership fees charged from the Government Medical Colleges and institutions. The private colleges and institutions have to make payment per site price for e-sources purchased by the consortium in every calendar year.[ 15 ] Membership of the college can be checked from the site http://www.nmlermed.in/members.htm or volunteers can contact their library to check the membership and to get the user name and password of the site www.ermed.jccc.in allotted to their college.[ 16 ] In 2009, the number of ERMED members increased from 40 to 72 Government Medical Colleges/Institutes across the country.[ 17 ] At present, it covers nearly 32 journals of dermatology. It includes Acta Dermatoveneorologica Alpina, Pannonica et Adriatica, Acta Dermatovenerologica Croatica, Advances in Skin and Wound Care, American Journal of Clinical Dermatology, American Journal of Dermatopathology, Archives of Dermatological Research, Archives of Dermatology,, Asian Journal of Dermatology, BMC Dermatology, Clinical, Cosmetic and Investigational Dermatology, Clinical Dermatology, Contact Dermatitis, Dermatologic Surgery, Dermatology, Dermatology Nursing, Dermatology Online Journal, Dermatology Times, Indian Journal of Dermatology, Indian Journal of Dermatology, Venereology and Leprology, International Journal of Dermatology, Internet Journal of Dermatology, Journal of Drugs in Dermatology, Journal of Investigative Dermatology, Journal of the European Academy of Dermatology and Venereology, Medicine, Open Dermatology Journal, Pediatric Dermatology, Rosacea Review, Skin and Allergy News, Skin Pharmacology and Physiology, Turkdem-Archives of the Turkish Dermatology and Venerology and Turkish Journal of Dermatology.[ 18 ]

Journal articles related to the topic can be searched easily after signing in at the site www.ermed.jccc.in , followed by clicking search database.

Google, Google Scholar, and Yahoo

Google ( http://www.google.com ) and Yahoo search ( http://www.search.yahoo.com ) are two of the world's most hit web pages and two largest web-based search engines.[ 19 ] Usually these are the first search site for any scholar. They provide links for both paid and free articles. The disadvantage associated with these sites is that additionally they provide materials that may not give scholarly information. Many articles are repeated also. But the catch is that one article which is paid at one web link may be free at another web link. Google Scholar ( http://www.scholar.google.com ) provides a simple way to broadly search for the relevant scholarly literature and research.[ 19 ]

The Cochrane Library

The Cochrane Library provides high-quality review articles. The Cochrane Database of Systematic Reviews has an impact factor of 5.653 of 2009.[ 20 ] Articles can be searched on the site http://www.thecochranelibrary.com/view/0/index.html .

Public Library of Science

Public library of science is a nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource.[ 21 ] Everything published on this site is freely available throughout the world, for researchers to read, download, copy, distribute, and use.[ 22 ] Articles can be searched here on the site http://www.plos.org/search.php .

Free Medical Journals

Currently, total 2226 journals are available on this site.[ 23 ] Among them, nearly 30 are journals are related to dermatology and venereology and most of them are in English.[ 24 ] Some journals are available only a few months after the release. Journals can be searched on the site http://www.freemedicaljournals.com/fmj/DERMA.HTM .

It covers more than 125 medical journals and textbooks. After a simple, free registration, Medscape automatically delivers you the specialty site that best fits your profile.[ 25 ] After signing in at www.medscape.com , articles can be searched.

HighWire Press Stanford University

HighWire Press partners with independent scholarly publishers, societies, associations, and university presses to facilitate the digital dissemination of 1465 journals, reference works, books, and proceedings.[ 26 ] Articles can be searched on the site http://highwire.stanford.edu/ . It provides both free and paid articles.

Bioline International

Bioline International provides open access to peer reviewed bioscience journals published in developing countries.[ 27 ] Articles can be searched on the site http://www.bioline.org.br .

Indmed covers about 77 journals indexed from 1985 onwards. A portal medIND provides free full text access to 40 Indian medical journals.[ 28 ] Articles can be searched on the site http://medind.nic.in .

BioMed Central

BioMed Central is a Science, Technology, and Medicine publisher. All original research articles published by BioMed Central are made free and permanently accessible online immediately upon publication.[ 29 ] After free registration, journals can be searched over http://www.biomedcentral.com/browse/journals/ .

Geneva Foundation for Medical Education and Research

Important dermatology journals in English included in this site are Acta Dermato-Venereologica, Acta Dermatovenerologica Alpina, Pannonica et Adriatica, Annals of Dermatology, Archives of Dermatology, Asian Journal of Dermatology, BMC Dermatology, Case Reports in Dermatology, Clinical Medicine Insights: Dermatology, Clinical, Cosmetic and Investigational Dermatology, Dermato-Endocrinology, Dermatology Online Journal, Dermatology Reports, Dermatology Research and Practice, Dermatology Times, European Journal of Dermatology, Indian Journal of Dermatology, Indian Journal of Dermatology, Venereology and Leprology, International Journal of Trichology, Internet Journal of Dermatology, Journal of Clinical and Experimental Dermatology Research, Journal of Clinical and Aesthetic Dermatology, Journal of Clinical, Cosmetic and Investigational Dermatology, Journal of Investigative Dermatology, Journal of Skin Cancer, Journal of the Egyptian Women's Dermatologic Society, Leprosy Review, Open Dermatology Journal, Rosacea Review, Skin Therapy Letter, World Wide Wounds.[ 30 ] Journals can be seen on the site http://www.gfmer.ch/Medical_journals/Dermatology.htm .

The website of Italian Library Association

Here journals can be traced on the site http://www.aib.it/aib/commiss/cnur/peb/pebs.htm3 . This site provides both free and paid journal articles.

UK PubMed Central

UK PubMed Central (UKPMC) is a full-text article database that extends the functionality of the original PubMed Central (PMC) repository. UKPMC ( http://ukpmc.ac.uk ) has undergone considerable development since its inception in 2007 and now includes both a UKPMC and PubMed search, as well as access to other records such as Agricola, Patents, and recent biomedical theses. UKPMC also differs from PubMed/PMC in that the full text and abstract information can be searched in an integrated manner from one input box. All of the articles in UKPMC are “Free Access,” Not all content available in PMC is made available to UKPMC.[ 31 ]

The University of lowa libraries

Links to few free full-text articles are available at the site http://www.lib.uiowa.edu/eresources/genindexes.asp .

National library of medicine gateway

National library of medicine (NLM) is a user-friendly web-based system that searches not only MEDLINE but also several other NLM databases at the same time.[ 19 ] Articles can be searched here on http://gateway.nlm.nih.gov/gw/Cmd .

Medical Matrix

Medical Matrix ( http://www.medmatrix.org ) is a comprehensive guide to clinical medicine resources on the Internet.[ 19 ] Medical Matrix links to more than ten MEDLINE sites, including Gateway and PubMed and fee and open access sites.[ 19 ]

World Health Organization

Publications from World Health Organizations can be searched at the site http://www.who.int/publications/en/ .

British Medical Journal Group

Some low income and low middle income countries are entitled to free access of this site.[ 32 ] For other countries, all the articles are not free. Journals can be searched here at site http://group.bmj.com/products/journals/ . This site includes Journal of Sexually Transmitted Infections.

British medical journal (BMJ) Open is an online-only, open access general medical journal, publishing medical research from all disciplines and therapeutic areas.[ 33 ] The journal publishes all research study types, from study protocols to phase I trials to meta-analyses.[ 33 ] Articles can be searched at http://bmjopen.bmj.com/ .

Elsevier Journals

Few journals published by Elsevier, provide free access to non subscribers, after a predefined period of time has elapsed following the final publication.[ 34 ] The list of journals can be seen on website http://www.elsevier.com/wps/find/authorsview.authors/delayedaccess .

Free full-text articles play a pivotal role in updating the knowledge of physicians and researchers. They play important role in preparation of any manuscript or thesis, for the persons who cannot subscribe to these articles due to any reason. Authors believe that these articles will be useful for such persons. Authors request the readers to contribute any other link for free full-text articles they know.

Source of Support: Nil

Conflict of Interest: None declared.

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Research: What Companies Don’t Know About How Workers Use AI

• Jeremie Brecheisen

Three Gallup studies shed light on when and why AI is being used at work — and how employees and customers really feel about it.

Leaders who are exploring how AI might fit into their business operations must not only navigate a vast and ever-changing landscape of tools, but they must also facilitate a significant cultural shift within their organizations. But research shows that leaders do not fully understand their employees’ use of, and readiness for, AI. In addition, a significant number of Americans do not trust business’ use of AI. This article offers three recommendations for leaders to find the right balance of control and trust around AI, including measuring how their employees currently use AI, cultivating trust by empowering managers, and adopting a purpose-led AI strategy that is driven by the company’s purpose instead of a rules-heavy strategy that is driven by fear.

If you’re a leader who wants to shift your workforce toward using AI, you need to do more than manage the implementation of new technologies. You need to initiate a profound cultural shift. At the heart of this cultural shift is trust. Whether the use case for AI is brief and experimental or sweeping and significant, a level of trust must exist between leaders and employees for the initiative to have any hope of success.

• Jeremie Brecheisen is a partner and managing director of The Gallup CHRO Roundtable.

Partner Center

The problem with making all academic research free

T here has been an earthquake in my corner of academia that will affect who teaches in prestigious universities and what ideas circulate among educated people around the world.

And it all happened because a concept rooted in good intentions — that academic research should be “open access,” free for everyone to read — has started to go too far.

The premise of open-access publishing is simple and attractive. It can cost libraries thousands of dollars a year to subscribe to academic journals, which sometimes means only academics affiliated with wealthy colleges and universities may access that research. But under open-access publishing, nearly anyone with an internet connection can find and read those articles for free. Authors win, because they find more readers. Academics around the world benefit, because they can access the latest scholarship. And the world wins, because scientific and intellectual progress is facilitated by the free exchange of ideas.

By now this model has taken hold in the natural sciences, especially in biology and biomedicine; during the pandemic many publishers removed paywalls from articles about vaccines and treatments. The Biden administration requires federally funded scholarly publications to be made freely available without any delay.

However, there is no such thing as a free academic article. Even with digital distribution, the expenses of running a journal are considerable. These costs include hosting the websites where people submit, peer-review, and edit articles; copyediting; advertising; preserving journal archives; and maintaining continuity as editors come and go.

As a result, unless journals have a source of revenue other than subscription fees, any move toward open access raises the question of who will cover the costs of publication.

One answer is that the money will come from authors themselves or their academic institutions or other backers. This works well enough in the natural sciences, because those researchers are often funded by grants, and some of that money can be set aside to cover a journal’s fees for publishing scientific articles. The Bill and Melinda Gates Foundation demands that all research funded by the foundation, including the underlying data, be published open access.

According to an MIT study , however, only a small fraction of scholars in the humanities publish their articles on an open-access basis. Unlike biologists and biomedical engineers, humanities scholars such as philosophers and historians do not get grants that can cover the publishing costs.

This means that if open access is to take hold in those fields as well — as many publishers and academics are advocating — the costs will have to be covered by some foundation or other sponsor, by the scholars’ institutions, or even by the scholars themselves. And all these models have serious downsides.

I’m a political philosopher. The earthquake in my field that I mentioned earlier shook one of our most prominent journals: the Journal of Political Philosophy.

Publishing an article in this journal has long made the difference between whether a candidate gets hired, tenured, or promoted at an elite institution of higher education. The high quality has stemmed in large part from the rigorous approach of the founding editor, Robert Goodin.

At the end of 2023, the publisher, Wiley, terminated its contract with Goodin. The reasons were not immediately clear, and over 1,000 academics, including me, signed a petition stating that we would not serve on the editorial board or write or review for the journal until Wiley reinstates Goodin. I recently attended a panel at an American Philosophical Association conference where philosophers voiced their anger and puzzlement about the situation.

One source of the problem appears to be that Wiley now charges the authors of an article or their institutions $3,840 to get published open access in the journal.

The Journal of Political Philosophy is actually hybrid open access, which means it waives the article processing charges for authors who permit their work to appear behind a subscription-only paywall. Nonetheless, Goodin and Anna Stilz , a Princeton professor and Journal of Political Philosophy editorial board member, point out that publishers like Wiley now have a strong incentive to favor open-access articles.

In the old model, in which university libraries subscribed to journals, editors were mainly incentivized to publish first-rate material that would increase subscriptions. In the open-access model, however, now that authors or their universities must cover the costs of processing articles, publishers of humanities journals seem to be incentivized to boost revenue by accepting as many articles as possible. According to Goodin , open access has “been the death knell of quality academic publishing.” The reason that Goodin lost his job, Goodin and Stilz imply, is that Wiley pressured Goodin to accept more articles to increase Wiley’s profits, and he said no. (Wiley representatives say that lines of communication had collapsed with Goodin.)

Early this year, Goodin cofounded a new journal titled simply Political Philosophy . The journal will be published by the Open Library of Humanities, which is subsidized by libraries and institutions around the world. But this version of open-access publishing does not have the financial stability of the old subscription model. Scholars affiliated with the Open Library of Humanities have pointed out that the project has substantial overhead costs, and it relied on a grant from the Andrew W. Mellon Foundation that has already ended. The Open Library of Humanities is an experiment, and I hope that it works, but as of now it publishes only 30 journals , compared with the 1,600 journals that Wiley publishes.

The fact remains that no one has satisfactorily explained how open access could work in the humanities and social sciences.

In his 2023 book “ Athena Unbound : Why and How Scholarly Knowledge Should Be Free for All,” UCLA history professor Peter Baldwin attempts an answer. He points to Latin America, where some national governments cover all expenses of academic publishing. But this proposal ignores the fact that the governments of the United States and other nations probably do not want to pay for humanities and social sciences journals.

Baldwin also floats the idea of preprint depositories where academics could share documents on the cloud before they have undergone the (somewhat expensive) process of peer review. But this means that academics would lose the benefits that come from getting double-blind feedback from one’s peers. This idea would reduce the costs of publishing a journal article, but it would turn much academic writing into fancy blogging.

Ultimately, Baldwin’s solution is that authors might “have to participate directly, giving them skin in the game and helping contain costs.” This means academics might ask their employers to pay the article processing charges, ask a journal for the processing fees to be waived, or dig into their own pockets to pay to publish.

And it might mean less gets published overall. The journal Government and Opposition, published by Cambridge University Press, is entirely open access and charges $3,450 for an article to be published. I’d have to apply for a discount or a waiver to publish there. Or I could do what political philosophers in Japan and Bosnia and Herzegovina have told me they do: avoid submitting to open-access journals. Their universities will not cover their article processing charges except maybe in the top journals, and even the reduced fees can run into hundreds of dollars that these professors do not have.

In “Athena Unbound,” Baldwin notes that Harvard subscribes to 10 times as many periodicals as India’s Institute of Science. One can bemoan this fact, but one may also appreciate that Harvard’s largesse spread enough subscription revenue around to reputable journals to enable academics to avoid paying to publish in them, no matter whether they teach at regional state schools, non-elite private schools, or institutions of higher education in poor countries. For all its flaws, the old model meant that when rich alumni donated to their alma maters, it increased library budgets and thereby made it possible for scholars of poetry and state politics to run and publish in academic journals.

Until we have more evidence that open-access journals in the humanities and social sciences can thrive in the long run, academics need to appreciate the advantages of the subscription model.

Nicholas Tampio is a professor of political science at Fordham University in New York City.

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• Published: 14 May 2024

2023 summer warmth unparalleled over the past 2,000 years

• Jan Esper   ORCID: orcid.org/0000-0003-3919-014X 1 , 2 ,
• Max Torbenson   ORCID: orcid.org/0000-0003-2720-2238 1 &
• Ulf Büntgen 2 , 3 , 4  

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Including an exceptionally warm Northern Hemisphere (NH) summer 1 ,2 , 2023 has been reported as the hottest year on record 3-5 . Contextualizing recent anthropogenic warming against past natural variability is nontrivial, however, because the sparse 19 th century meteorological records tend to be too warm 6 . Here, we combine observed and reconstructed June-August (JJA) surface air temperatures to show that 2023 was the warmest NH extra-tropical summer over the past 2000 years exceeding the 95% confidence range of natural climate variability by more than half a degree Celsius. Comparison of the 2023 JJA warming against the coldest reconstructed summer in 536 CE reveals a maximum range of pre-Anthropocene-to-2023 temperatures of 3.93°C. Although 2023 is consistent with a greenhouse gases-induced warming trend 7 that is amplified by an unfolding El Niño event 8 , this extreme emphasizes the urgency to implement international agreements for carbon emission reduction.

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Department of Geography, University of Cambridge, Cambridge, United Kingdom

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Esper, J., Torbenson, M. & Büntgen, U. 2023 summer warmth unparalleled over the past 2,000 years. Nature (2024). https://doi.org/10.1038/s41586-024-07512-y

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Using ideas from game theory to improve the reliability of language models

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Imagine you and a friend are playing a game where your goal is to communicate secret messages to each other using only cryptic sentences. Your friend's job is to guess the secret message behind your sentences. Sometimes, you give clues directly, and other times, your friend has to guess the message by asking yes-or-no questions about the clues you've given. The challenge is that both of you want to make sure you're understanding each other correctly and agreeing on the secret message.

MIT Computer Science and Artificial Intelligence Laboratory (CSAIL) researchers have created a similar "game" to help improve how AI understands and generates text. It is known as a “consensus game” and it involves two parts of an AI system — one part tries to generate sentences (like giving clues), and the other part tries to understand and evaluate those sentences (like guessing the secret message).

The researchers discovered that by treating this interaction as a game, where both parts of the AI work together under specific rules to agree on the right message, they could significantly improve the AI's ability to give correct and coherent answers to questions. They tested this new game-like approach on a variety of tasks, such as reading comprehension, solving math problems, and carrying on conversations, and found that it helped the AI perform better across the board.

Traditionally, large language models answer one of two ways: generating answers directly from the model (generative querying) or using the model to score a set of predefined answers (discriminative querying), which can lead to differing and sometimes incompatible results. With the generative approach, "Who is the president of the United States?" might yield a straightforward answer like "Joe Biden." However, a discriminative query could incorrectly dispute this fact when evaluating the same answer, such as "Barack Obama."

So, how do we reconcile mutually incompatible scoring procedures to achieve coherent, efficient predictions? 

"Imagine a new way to help language models understand and generate text, like a game. We've developed a training-free, game-theoretic method that treats the whole process as a complex game of clues and signals, where a generator tries to send the right message to a discriminator using natural language. Instead of chess pieces, they're using words and sentences," says Athul Jacob, an MIT PhD student in electrical engineering and computer science and CSAIL affiliate. "Our way to navigate this game is finding the 'approximate equilibria,' leading to a new decoding algorithm called 'equilibrium ranking.' It's a pretty exciting demonstration of how bringing game-theoretic strategies into the mix can tackle some big challenges in making language models more reliable and consistent."

When tested across many tasks, like reading comprehension, commonsense reasoning, math problem-solving, and dialogue, the team's algorithm consistently improved how well these models performed. Using the ER algorithm with the LLaMA-7B model even outshone the results from much larger models. "Given that they are already competitive, that people have been working on it for a while, but the level of improvements we saw being able to outperform a model that's 10 times the size was a pleasant surprise," says Jacob. 

"Diplomacy," a strategic board game set in pre-World War I Europe, where players negotiate alliances, betray friends, and conquer territories without the use of dice — relying purely on skill, strategy, and interpersonal manipulation — recently had a second coming. In November 2022, computer scientists, including Jacob, developed “Cicero,” an AI agent that achieves human-level capabilities in the mixed-motive seven-player game, which requires the same aforementioned skills, but with natural language. The math behind this partially inspired the Consensus Game. 

While the history of AI agents long predates when OpenAI's software entered the chat in November 2022, it's well documented that they can still cosplay as your well-meaning, yet pathological friend. 

The consensus game system reaches equilibrium as an agreement, ensuring accuracy and fidelity to the model's original insights. To achieve this, the method iteratively adjusts the interactions between the generative and discriminative components until they reach a consensus on an answer that accurately reflects reality and aligns with their initial beliefs. This approach effectively bridges the gap between the two querying methods. 

In practice, implementing the consensus game approach to language model querying, especially for question-answering tasks, does involve significant computational challenges. For example, when using datasets like MMLU, which have thousands of questions and multiple-choice answers, the model must apply the mechanism to each query. Then, it must reach a consensus between the generative and discriminative components for every question and its possible answers. 

The system did struggle with a grade school right of passage: math word problems. It couldn't generate wrong answers, which is a critical component of understanding the process of coming up with the right one. 

“The last few years have seen really impressive progress in both strategic decision-making and language generation from AI systems, but we’re just starting to figure out how to put the two together. Equilibrium ranking is a first step in this direction, but I think there’s a lot we’ll be able to do to scale this up to more complex problems,” says Jacob.   

An avenue of future work involves enhancing the base model by integrating the outputs of the current method. This is particularly promising since it can yield more factual and consistent answers across various tasks, including factuality and open-ended generation. The potential for such a method to significantly improve the base model's performance is high, which could result in more reliable and factual outputs from ChatGPT and similar language models that people use daily. 

"Even though modern language models, such as ChatGPT and Gemini, have led to solving various tasks through chat interfaces, the statistical decoding process that generates a response from such models has remained unchanged for decades," says Google Research Scientist Ahmad Beirami, who was not involved in the work. "The proposal by the MIT researchers is an innovative game-theoretic framework for decoding from language models through solving the equilibrium of a consensus game. The significant performance gains reported in the research paper are promising, opening the door to a potential paradigm shift in language model decoding that may fuel a flurry of new applications."

Jacob wrote the paper with MIT-IBM Watson Lab researcher Yikang Shen and MIT Department of Electrical Engineering and Computer Science assistant professors Gabriele Farina and Jacob Andreas, who is also a CSAIL member. They presented their work at the International Conference on Learning Representations (ICLR) earlier this month, where it was highlighted as a "spotlight paper." The research also received a “best paper award” at the NeurIPS R0-FoMo Workshop in December 2023.

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Press mentions, quanta magazine.

MIT researchers have developed a new procedure that uses game theory to improve the accuracy and consistency of large language models (LLMs), reports Steve Nadis for Quanta Magazine . “The new work, which uses games to improve AI, stands in contrast to past approaches, which measured an AI program’s success via its mastery of games,” explains Nadis. 

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International planet hunters unveil massive catalog of strange worlds

NASA TESS-Keck Survey details mass, density of 126 planets

While thousands of planets have been discovered around other stars, relatively little is known about them. A NASA catalog featuring 126 exotic, newly discovered worlds includes detailed measurements that allow for comparisons with our own solar system. 

The catalog details a fascinating mix of planet types beyond our solar system, from rare worlds with extreme environments to ones that could possibly support life. 

The planets were analyzed by a large, international team of scientists using NASA’s Transiting Exoplanet Survey Satellite (TESS) in collaboration with the W.M. Keck Observatory on Maunakea, Hawai’i. They are described in today’s edition of The Astrophysical Journal Supplement. 

“Relatively few of the previously known exoplanets have a measurement of both the mass and the radius. The combination of these measurements tell us what the planets could be made of and how they formed,” said Stephen Kane, UC Riverside astrophysicist and principal investigator of the TESS-Keck Survey. 

“With this information, we can begin to answer questions about where our solar system fits in to the grand tapestry of other planetary systems,” Kane said. 

The research team spent three years developing the catalog. They analyzed more than 13,000 radial velocity (RV) measurements to calculate the masses of 120 confirmed planets, plus six candidate planets, spread out over the northern sky. 

Though the planets themselves aren’t visible, they do have a visible effect. As they orbit, the planets tug on their host stars, causing them to “wobble.” When the star moves toward a telescope, its visible light turns slightly bluer; when it moves away from us, the light shifts slightly redder. 

This is much like how sound behaves. Due to the Doppler effect, a fire truck’s siren gets higher-pitched as it travels closer and sounds lower-pitched as it drives farther away.

“These RV measurements let astronomers detect and learn the properties of these exoplanetary systems. When we see a star wobbling regularly back and forth, we can infer the presence of an orbiting planet and measure the planet’s mass,” said Ian Crossfield, University of Kansas astrophysicist and catalog co-author. 

Several planets in the TESS-Keck Survey stand out as touchstones for deepening astronomers’ understanding of the diverse ways planets form and evolve. 

A related survey paper authored by UCR graduate student Michelle Hill announces the discovery of two new planets orbiting a star like our sun. The first is a “sub-Saturn” planet with a mass and radius that are between those of Neptune and Saturn. 

“There is ongoing debate about whether sub-Saturn planets are truly rare, or if we are just bad at finding planets like these,” Hill said. “So, this planet, TOI-1386 b, is an important addition to this demographic of planets.”

TOI-1386 b only takes 26 days to orbit its star. Meanwhile its neighbor, a planet with a mass close to that of Saturn, takes 227-days to orbit the same star. 

Another survey paper authored by UCR graduate student Daria Pidhorodetska describes a planet about half the size of Neptune that takes a mere 19 days to orbit its star, which is much like our Sun. 

“Planets smaller than Neptune but larger than Earth are the most prevalent worlds in our galaxy, yet they are absent from our own Solar System. Each time a new one is discovered, we are reminded of how diverse our Universe is, and that our existence in the cosmos may be more unique than we can understand,” Pidhorodetska said. 

There are a lot of stars that are not similar to our sun. If scientists want to make apt comparisons between our world and others, they need to find stars of a similar age, size, and mass. “Then we can do apples-to-apples comparisons,” Kane said. “That’s the exciting part of the papers produced by Michelle and Daria, because they allow for this.”

Planets with even more extreme, ultra-short orbits around stars unlike our sun are also detailed in the catalog. One is so close to its orange dwarf star it completes orbit in less than 12 hours.   

“TOI-1798 c orbits its star so quickly that one year on this planet lasts less than half a day on Earth. Because of their proximity to their host stars, planets like this one are also ultra hot — receiving more than 3,000 times the radiation that Earth receives from the sun,” said Alex Polanski, University of Kansas physics and astronomy graduate student and lead author of the catalog paper. 

“Existing in this extreme environment means that this planet has likely lost any atmosphere that it initially formed,” Polanski said. 

Ultimately, this new catalog represents a major contribution both to NASA’s TESS mission, and toward answering the question of whether other planets are capable of hosting life as we know it. 

“Are we unusual? The jury is still out on that one, but our new mass catalog represents a major step toward answering that question,” Kane said.  

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Web publishers brace for carnage as Google adds AI answers

The tech giant is rolling out AI-generated answers that displace links to human-written websites, threatening millions of creators

Kimber Matherne’s thriving food blog draws millions of visitors each month searching for last-minute dinner ideas.

But the mother of three says decisions made at Google, more than 2,000 miles from her home in the Florida panhandle, are threatening her business. About 40 percent of visits to her blog, Easy Family Recipes , come through the search engine, which has for more than two decades served as the clearinghouse of the internet, sending users to hundreds of millions of websites each day.

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As the tech giant gears up for Google I/O, its annual developer conference, this week, creators like Matherne are worried about the expanding reach of its new search tool that incorporates artificial intelligence. The product, dubbed “Search Generative Experience,” or SGE, directly answers queries with complex, multi-paragraph replies that push links to other websites further down the page, where they’re less likely to be seen.

The shift stands to shake the very foundations of the web.

The rollout threatens the survival of the millions of creators and publishers who rely on the service for traffic. Some experts argue the addition of AI will boost the tech giant’s already tight grip on the internet, ultimately ushering in a system where information is provided by just a handful of large companies.

“Their goal is to make it as easy as possible for people to find the information they want,” Matherne said. “But if you cut out the people who are the lifeblood of creating that information — that have the real human connection to it — then that’s a disservice to the world.”

Google calls its AI answers “overviews” but they often just paraphrase directly from websites. One search for how to fix a leaky toilet provided an AI answer with several tips, including tightening tank bolts. At the bottom of the answer, Google linked to The Spruce, a home improvement and gardening website owned by web publisher Dotdash Meredith, which also owns Investopedia and Travel + Leisure. Google’s AI tips lifted a phrase from The Spruce’s article word-for-word.

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A spokesperson for Dotdash Meredith declined to comment.

The links Google provides are often half-covered, requiring a user to click to expand the box to see them all. It’s unclear which of the claims made by the AI come from which link.

Tech research firm Gartner predicts traffic to the web from search engines will fall 25 percent by 2026. Ross Hudgens, CEO of search engine optimization consultancy Siege Media, said he estimates at least a 10 to 20 percent hit, and more for some publishers. “Some people are going to just get bludgeoned,” he said.

Raptive, which provides digital media, audience and advertising services to about 5,000 websites, including Easy Family Recipes, estimates changes to search could result in about $2 billion in losses to creators — with some websites losing up to two-thirds of their traffic. Raptive arrived at these figures by analyzing thousands of keywords that feed into its network, and conducting a side-by-side comparison of traditional Google search and the pilot version of Google SGE.

Michael Sanchez, the co-founder and CEO of Raptive, says that the changes coming to Google could “deliver tremendous damage” to the internet as we know it. “What was already not a level playing field … could tip its way to where the open internet starts to become in danger of surviving for the long term,” he said.

When Google’s chief executive Sundar Pichai announced the broader rollout during an earnings call last month, he said the company is making the change in a “measured” way, while “also prioritizing traffic to websites and merchants.” Company executives have long argued that Google needs a healthy web to give people a reason to use its service, and doesn’t want to hurt publishers. A Google spokesperson declined to comment further.

“I think we got to see an incredible blossoming of the internet, we got to see something that was really open and freewheeling and wild and very exciting for the whole world,” said Selena Deckelmann, the chief product and technology officer for Wikimedia, the foundation that oversees Wikipedia.

“Now, we’re just in this moment where I think that the profits are driving people in a direction that I’m not sure makes a ton of sense,” Deckelmann said. “This is a moment to take stock of that and say, ‘What is the internet we actually want?’”

People who rely on the web to make a living are worried.

Jake Boly, a strength coach based in Austin, has spent three years building up his website of workout shoe reviews. But last year, his traffic from Google dropped 96 percent. Google still seems to find value in his work, citing his page on AI-generated answers about shoes. The problem is, people read Google’s summary and don’t visit his site anymore, Boly said.

“My content is good enough to scrape and summarize,” he said. “But it’s not good enough to show in your normal search results, which is how I make money and stay afloat.”

Google first said it would begin experimenting with generative AI in search last year, several months after OpenAI released ChatGPT. At the time, tech pundits speculated that AI chatbots could replace Google search as the place to find information. Satya Nadella, the CEO of Google’s biggest competitor, Microsoft, added an AI chatbot to his company’s search engine and in February 2023 goaded Google to “ come out and show that they can dance .”

The search giant started dancing. Though it had invented much of the AI technology enabling chatbots and had used it to power tools like Google Translate, it started putting generative AI tech into its other products. Google Docs, YouTube’s video-editing tools and the company’s voice assistant all got AI upgrades.

But search is Google’s most important product, accounting for about 57 percent of its $80 billion in revenue in the first quarter of this year. Over the years, search ads have been the cash cow Google needed to build its other businesses, like YouTube and cloud storage, and to stay competitive by buying up other companies .

Google has largely avoided AI answers for the moneymaking searches that host ads, said Andy Taylor, vice president of research at internet marketing firm Tinuiti.

When it does show an AI answer on “commercial” searches, it shows up below the row of advertisements. That could force websites to buy ads just to maintain their position at the top of search results.

Google has been testing the AI answers publicly for the past year, showing them to a small percentage of its billions of users as it tries to improve the technology.

Still, it routinely makes mistakes. A review by The Washington Post published in April found that Google’s AI answers were long-winded, sometimes misunderstood the question and made up fake answers.

The bar for success is high. While OpenAI’s ChatGPT is a novel product, consumers have spent years with Google and expect search results to be fast and accurate. The rush into generative AI might also run up against legal problems. The underlying tech behind OpenAI, Google, Meta and Microsoft’s AI was trained on millions of news articles, blog posts, e-books, recipes, social media comments and Wikipedia pages that were scraped from the internet without paying or asking permission of their original authors.

OpenAI and Microsoft have faced a string of lawsuits over alleged theft of copyrighted works .

“If journalists did that to each other, we’d call that plagiarism,” said Frank Pine, the executive editor of MediaNews Group, which publishes dozens of newspapers around the United States, including the Denver Post, San Jose Mercury News and the Boston Herald. Several of the company’s papers sued OpenAI and Microsoft in April, alleging the companies used its news articles to train their AI.

If news organizations let tech companies, including Google, use their content to make AI summaries without payment or permission, it would be “calamitous” for the journalism industry, Pine said. The change could have an even bigger effect on newspapers than the loss of their classifieds businesses in the mid-2000s or Meta’s more recent pivot away from promoting news to its users, he said.

The move to AI answers, and the centralization of the web into a few portals isn’t slowing down. OpenAI has signed deals with web publishers — including Dotdash Meredith — to show their content prominently in its chatbot.

Matherne, of Easy Family Recipes, says she’s bracing for the changes by investing in social media channels and email newsletters.

“The internet’s kind of a scary place right now,” Matherne said. “You don’t know what to expect.”

A previous version of this story said MediaNews Group sued OpenAI and Microsoft. In fact, it was several of the company's newspapers that sued the tech companies. This story has been corrected.