what is literature map in research

How to Master at Literature Mapping: 5 Most Recommended Tools to Use

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After putting in a lot of thought, time, and effort, you’ve finally selected a research topic . As the first step towards conducting a successful and impactful research is completed, what follows it is the gruesome process of literature review . Despite the brainstorming, the struggle of understanding how much literature is enough for your research paper or thesis is very much real. Unlike the old days of flipping through pages for hours in a library, literature has come easy to us due to its availability on the internet through Open Access journals and other publishing platforms. This ubiquity has made it even more difficult to cover only significant data! Nevertheless, an ultimate solution to this problem of conglomerating relevant data is literature mapping .

Table of Contents

What is Literature Mapping?

Literature mapping is one of the key strategies when searching literature for your research. Since writing a literature review requires following a systematic method to identify, evaluate, and interpret the work of other researchers, academics, and practitioners from the same research field, creating a literature map proves beneficial. Mapping ideas, arguments, and concepts in a literature is an imperative part of literature review. Additionally, it is stated as an established method for externalizing knowledge and thinking processes. A map of literature is a “graphical plan”, “diagrammatic representation”, or a “geographical metaphor” of the research topic.

Researchers are often overwhelmed by the large amount of information they encounter and have difficulty identifying and organizing information in the context of their research. It is recommended that experts in their fields develop knowledge structures that are richer not only in terms of knowledge, but also in terms of the links between this knowledge. This knowledge linking process is termed as literature mapping .

How Literature Mapping Helps Researchers?

Literature mapping helps researchers in following ways:

• It provides concrete evidence of a student’s understanding and interpretation of the research field to share with both peers and professors.
• Switching to another modality helps researchers form patterns to see what might otherwise be hidden in the research area.
• Furthermore, it helps in identifying gaps in pertinent research.
• Finally, t lets researchers identify potential original areas of study and parameters of their work.

How to Make a Literature Map?

Literature mapping is not only an organizational tool, but also a reflexive tool. Furthermore, it distinguishes between declarative knowledge shown by identifying key concepts, ideas and methods, and procedural knowledge shown through classifying these key concepts and establishing links or relationships between them. The literature review conceptualizes research structures as a “knowledge production domain” that defines a productive and ongoing constructive element. Thus, the approaches emphasize the identity of different scientific institutions from different fields, which can be mapped theoretically, methodologically, or fundamentally.

The two literature mapping approaches are:

• Mapping with key ideas or descriptors: This is developed from keywords in research topics.
• Author mapping: This is also termed as citation matching that identifies key experts in the field and may include the use of citations to interlink them.

Generally, literature maps can be subdivided by categorization processes based on theories, definitions, or chronology, and cross-reference between the two types of mapping. Furthermore, researchers use mind maps as a deductive process, general concept-specific mapping (results in a right triangle), or an inductive process mapping to specific concepts (results in an inverted triangle).

What are Different Literature Mapping Methods?

The different types of literature mapping and representations are as follows:

1. Feature Mapping:

Argument structures developed from summary registration pages.

2. Topic Tree Mapping:

Summary maps showing the development of the topic in sub-themes up to any number of levels.

3. Content Mapping:

Linear structure of organization of content through hierarchical classification.

4. Taxonomic Mapping:

Classification through standardized taxonomies.

5. Concept Mapping:

Linking concepts and processes allows procedural knowledge from declarative information. With a basic principle of cause and effect and problem solving, concept maps can show the relationship between theory and practice.

6. Rhetorical Mapping:

The use of rhetoric communication to discuss, influence, or persuade is particularly important in social policy and political science and can be considered a linking strategy. A number of rhetorical tools have been identified that can be used to present a case, including ethos, metaphor, trope, and irony.

7. Citation Mapping:

Citation mapping or matching is a research process established to specifically establish links between authors by citing their articles. Traditional manual citation indexes have been replaced by automated databases that allow visual mapping methods (e.g. ISI Web of Science). In conclusion, citation matching in a subject area can be effective in determining the frequency of authors and specific articles.

5 Most Useful Literature Mapping Tools

Technology has made the literature mapping process easier now. However, with numerous options available online, it does get difficult for researchers to select one tool that is efficient. These tools are built behind explicit metadata and citations when coupled with some new machine learning techniques. Here are the most recommended literature mapping tools to choose from:

1. Connected Papers

a. Connected Papers is a simple, yet powerful, one-stop visualization tool that uses a single starter article.

b. It is easy to use tool that quickly identifies similar papers with just one “Seed paper” (a relevant paper).

c. Furthermore, it helps to detect seminal papers as well as review papers.

d. It creates a similarity graph not a citation graph and connecting lines (based on the similarity metric).

e. Does not necessarily show direct citation relationships.

f. The identified papers can then be exported into most reference managers like Zotero, EndNote, Mendeley, etc.

2. Inciteful

a. Inciteful is a customizable tool that can be used with multiple starter articles in an iterative process.

b. Results from multiple seed papers can be imported in a batch with a BibTex file.

c. Inciteful produces the following lists of papers by default:

• Similar papers (uses Adamic/Adar index)
• “Most Important Papers in the Graph” (based on PageRank)
• Recent Papers by the Top 100 Authors
• The Most Important Recent Papers

d. It allows filtration of results by keywords.

e. Importantly, seed papers can also be directly added by title or DOI.

a. Litmaps follows an iterative process and creates visualizations for found papers.

b. It allows importing of papers using BibTex format which can be exported from most reference managers like Zotero, EndNote, Mendeley. In addition, it allows paper imports from an ORCID profile.

c. Keywords search method is used to find Litmaps indexed papers.

d. Additionally, it allows setting up email updates of “emergent literature”.

e. Its unique feature that allows overlay of different maps helps to look for overlaps of papers.

f. Lastly, its explore function allows finding related papers to add to the map.

4. Citation-based Sites

a. CoCites is a citation-based method for researching scientific literature.

b. Citation Gecko is a tool for visualizing links between articles.

c. VOSviewer is a software tool for creating and visualizing bibliometric networks. These networks are for example journals, may include researchers or individual publications, which can be generated based on citation, bibliographic matching , co-citation, or co-authorship relationships. VOSviewer also offers text mining functionality that can be used to create and visualize networks of important terms extracted from a scientific literature.

5. Citation Context Tools

a. Scite allow users to see how a publication has been cited by providing the context of the citation and a classification describing whether it provides supporting or contrasting evidence for the cited claim.

b. Semantic Scholar is a freely available, AI-powered research tool for scientific literature.

Have you ever mapped your literature? Did you use any of these tools before? Lastly, what are the strategies and methods you use for literature mapping ? Let us know how this article helped you in creating a hassle-free and comprehensive literature map.

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You are here, structuring your ideas: creating a literature map.

It is important to have a plan of the areas to be discussed, using this to indicated how these will link together. In the overall structure of the literature review, there should be a logical flow of ideas and within each paragraph there should be a clear theme, around which related ideas are explored and developed. A literature map can be useful for this purpose as it enables you to create a visual representation of the themes and how they could relate to one another.

A literature map (Cresswell, 2011) is a two dimensional diagrammatic representation of information where links are made between concepts by drawing arrows (which could be annotated to define the nature of these links). Constructing a literature map helps you to:

• develop your understanding of the key issues and research findings in the literature
• to organise ideas in your mind
• to see more clearly how different research studies relate to one another and to group those with similar findings.

Your map can then be used as a plan for your literature review.

As well has helping you to organise the literature for your review, a literature map can be used to help you analyse the information in a particular journal article, supporting the exploration of strengths and weaknesses of the methodology and the resultant findings and enabling you to explore how key themes and concepts in the article link together.

It is important to represent the different views and any conflicting research findings that exist in the literature (Newby, 2014). There is a danger of selective referencing, only including literature that supports your own beliefs and findings, disregarding alternative views. This should be avoided as it is based on the assumption that your views are the correct ones, and it is possible that you could miss key ideas and findings that could take your research in new and exciting directions.

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Creative Commons

Literature Mapping in Scientific Research: A Comprehensive Review

Accelerate scientific research with Literature Mapping: a comprehensive tool for knowledge discovery and data-driven insights.

Literature mapping is a process that involves analyzing and visualizing the scientific literature on a particular topic to identify research gaps, improve collaboration, and inform decision-making.

In this article, we list five benefits of literature mapping for scientists and researchers and show you types and tools to save your time and help you find better evidence.

What is Literature Mapping?

Literature mapping is a process that involves analyzing and visualizing the scientific literature on a particular topic. It includes systematically searching, collecting, and reviewing relevant studies, articles, and books published in a specific field or discipline.

The purpose of literature mapping is to provide a comprehensive overview of the current state of knowledge on a topic, identify gaps in the literature, and potential areas for future research. It can be useful for those who seek to conduct a systematic review, develop a research proposal, or explore new research areas.

Benefits of Literature Mapping

Here are five benefits of literature mapping for scientists and researchers:

• Identify research gaps : Literature mapping helps researchers to identify gaps in the existing research and to determine areas that require further investigation.
• Visualize the research landscape : By creating visualizations of the scientific literature, researchers can see the relationships between different research topics.
• Save time : Literature mapping can help researchers save time by providing an overview of the literature on a particular topic, including relevant studies and duplicated work.
• Improve collaboration : Literature mapping can help researchers to collaborate more effectively by providing a shared understanding of the research landscape. This improves communication, and facilitates the workflow between different disciplines.
• Inform decision-making : Literature mapping can help researchers to make assertive decisions. This can be especially useful for policymakers and other decision-makers who need to make decisions based on scientific evidence.

Types of Literature Mapping

Feature mapping.

Feature mapping is a technique used primarily in data analysis and machine learning to identify patterns and relationships between features of a dataset. It involves analyzing the data and plotting the relationships between different features of the dataset on a map or chart.

Some of the main features include:

• Identification of relationships : Feature mapping can help identify the relationships between different features or variables in a dataset. This can allow for better modeling and prediction of outcomes.
• Pattern recognition : By plotting the relationships between features of a dataset, feature mapping can help identify patterns and anomalies that may not be immediately apparent in the raw data.
• Visualization : Feature mapping often involves creating visual representations of the relationships between features of a dataset. This can help make the data easier to understand and interpret.
• Dimension reduction : When dealing with large datasets with many features, feature mapping can help reduce the dimensionality of the data. This can help simplify the data and make it easier to analyze.
• Data clustering : Feature mapping can also help identify groups or clusters of data points that share similar features. This can allow for more targeted analysis and modeling of specific groups within the dataset.
• Feature selection : Feature mapping can aid in the selection of the most important features from a dataset. By identifying the relationships between features, researchers can determine which features are most relevant to the outcomes they are trying to predict.

Topic Tree Mapping

Topic tree mapping is a technique used to visualize and organize the relationships between different topics or themes within a larger subject area. It involves creating a hierarchical structure of topics, with more general topics at the top and more specific subtopics branching out below.

Content Mapping

Content mapping is the process of creating a visual representation or map of the content of a document, website, or other information source. It involves breaking down the content into its constituent parts, organizing it according to a logical structure, and presenting it in a user-friendly and easily accessible way.

Taxonomic Mapping

Taxonomic mapping is the process of assigning different taxonomic categories to specific objects or organisms based on their characteristics, traits, and other distinguishing features. This mapping enables the organization and identification of different species and helps researchers and scientists to conduct various studies and experiments related to their classification, evolution, and diversity.

Concept Mapping

Concept Mapping is a visual representation of the relationships between concepts and ideas in a particular field. It involves identifying key concepts, and organizing them into a hierarchical structure. It can help to identify gaps in knowledge and aid in the development of new theories.

Rhetorical Mapping

Rhetorical mapping is a process used in communication studies and critical discourse analysis to analyze the structure and content of discourse. It involves creating a visual representation or diagram of a text or speech that identifies its various components, such as arguments, claims, evidence, and rhetorical strategies used to persuade the audience. Rhetorical mapping allows researchers to understand how the speaker or writer uses language and persuasion techniques to influence the audience’s beliefs and attitudes.

Citation Mapping

Citation Mapping involves tracing the citation history of a particular article, and identifying the articles that have cited it. This can help to identify the impact of the article on the field, and identify related research.

Tools for Literature Mapping

• Citation Gecko : Citation Gecko is a web-based tool that allows users to quickly and easily search for and download citation data from various academic databases. It streamlines and simplifies the process of finding and organizing citations for research projects.
• Inciteful : Inciteful is a literature-mapping tool that visualizes citation networks and identifies key authors and articles within a particular field of research. It can be used to explore the literature on a specific topic, as well as to identify gaps in current research.
• OpenKnowledge : OpenKnowledge is an online platform for sharing and discovering research papers and other scholarly materials. It enables users to search for and download documents, as well as to connect with other researchers who are working in the same field.
• ConnectedPapers : ConnectedPapers is a search engine that allows users to explore citation networks and discover the most influential papers and authors in a particular field. It uses citation information to uncover relationships between different papers and to suggest potentially relevant articles to read.
• LitMaps : LitMaps is a mapping tool that allows users to explore the relationships between different articles and concepts within a particular field of study. It visualizes the connections between different scholarly articles and helps users to develop a deeper understanding of the underlying themes and concepts within a particular field.
• Local Citation Network : Local Citation Network is a tool for mapping the relationships between different articles and authors within a particular geographic area. It allows users to explore the research in progress in a particular region and to identify potential collaborators and sources of funding.
• CoCites : CoCites is a literature-mapping tool that identifies the most frequently cited articles and authors within a particular field. It allows users to explore the relationships between different papers and to identify key areas of research.
• VOSviewer : VOSviewer is a tool for visualizing citation networks and identifying key authors, papers, and concepts within a particular field of research. It allows users to explore the relationships between different papers and to identify areas of overlap and potential collaboration.
• ResearchRabbit : ResearchRabbit is a web-based research tool that allows users to search for and collect scholarly articles and other research materials. It streamlines the research process by helping users to find relevant articles and to organize and annotate their findings.

Professional and custom designs for your publications

Professional and custom designs are crucial for scientific publications because they help researchers to communicate their research findings effectively and efficiently. A well-designed publication not only attracts the attention of the reader but also conveys the information in a clear and understandable way.

With Mind the Graph , researchers can easily create custom illustrations, graphs, charts, and diagrams that clearly present their research findings. The platform provides a vast library of scientific illustrations that are scientifically accurate and visually appealing.

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• How to Write a Literature Review | Guide, Examples, & Templates

How to Write a Literature Review | Guide, Examples, & Templates

Published on January 2, 2023 by Shona McCombes . Revised on September 11, 2023.

What is a literature review? A literature review is a survey of scholarly sources on a specific topic. It provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research that you can later apply to your paper, thesis, or dissertation topic .

There are five key steps to writing a literature review:

• Search for relevant literature
• Evaluate sources
• Identify themes, debates, and gaps
• Outline the structure
• Write your literature review

A good literature review doesn’t just summarize sources—it analyzes, synthesizes , and critically evaluates to give a clear picture of the state of knowledge on the subject.

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Table of contents

What is the purpose of a literature review, examples of literature reviews, step 1 – search for relevant literature, step 2 – evaluate and select sources, step 3 – identify themes, debates, and gaps, step 4 – outline your literature review’s structure, step 5 – write your literature review, free lecture slides, other interesting articles, frequently asked questions, introduction.

• Quick Run-through
• Step 1 & 2

When you write a thesis , dissertation , or research paper , you will likely have to conduct a literature review to situate your research within existing knowledge. The literature review gives you a chance to:

• Demonstrate your familiarity with the topic and its scholarly context
• Develop a theoretical framework and methodology for your research
• Position your work in relation to other researchers and theorists
• Show how your research addresses a gap or contributes to a debate
• Evaluate the current state of research and demonstrate your knowledge of the scholarly debates around your topic.

Writing literature reviews is a particularly important skill if you want to apply for graduate school or pursue a career in research. We’ve written a step-by-step guide that you can follow below.

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Writing literature reviews can be quite challenging! A good starting point could be to look at some examples, depending on what kind of literature review you’d like to write.

• Example literature review #1: “Why Do People Migrate? A Review of the Theoretical Literature” ( Theoretical literature review about the development of economic migration theory from the 1950s to today.)
• Example literature review #2: “Literature review as a research methodology: An overview and guidelines” ( Methodological literature review about interdisciplinary knowledge acquisition and production.)
• Example literature review #3: “The Use of Technology in English Language Learning: A Literature Review” ( Thematic literature review about the effects of technology on language acquisition.)
• Example literature review #4: “Learners’ Listening Comprehension Difficulties in English Language Learning: A Literature Review” ( Chronological literature review about how the concept of listening skills has changed over time.)

You can also check out our templates with literature review examples and sample outlines at the links below.

Download Word doc Download Google doc

Before you begin searching for literature, you need a clearly defined topic .

If you are writing the literature review section of a dissertation or research paper, you will search for literature related to your research problem and questions .

Make a list of keywords

Start by creating a list of keywords related to your research question. Include each of the key concepts or variables you’re interested in, and list any synonyms and related terms. You can add to this list as you discover new keywords in the process of your literature search.

• Social media, Facebook, Instagram, Twitter, Snapchat, TikTok
• Body image, self-perception, self-esteem, mental health
• Generation Z, teenagers, adolescents, youth

Search for relevant sources

Use your keywords to begin searching for sources. Some useful databases to search for journals and articles include:

• Your university’s library catalogue
• Google Scholar
• Project Muse (humanities and social sciences)
• Medline (life sciences and biomedicine)
• EconLit (economics)
• Inspec (physics, engineering and computer science)

You can also use boolean operators to help narrow down your search.

Make sure to read the abstract to find out whether an article is relevant to your question. When you find a useful book or article, you can check the bibliography to find other relevant sources.

You likely won’t be able to read absolutely everything that has been written on your topic, so it will be necessary to evaluate which sources are most relevant to your research question.

For each publication, ask yourself:

• What question or problem is the author addressing?
• What are the key concepts and how are they defined?
• What are the key theories, models, and methods?
• Does the research use established frameworks or take an innovative approach?
• What are the results and conclusions of the study?
• How does the publication relate to other literature in the field? Does it confirm, add to, or challenge established knowledge?
• What are the strengths and weaknesses of the research?

Make sure the sources you use are credible , and make sure you read any landmark studies and major theories in your field of research.

You can use our template to summarize and evaluate sources you’re thinking about using. Click on either button below to download.

Take notes and cite your sources

As you read, you should also begin the writing process. Take notes that you can later incorporate into the text of your literature review.

It is important to keep track of your sources with citations to avoid plagiarism . It can be helpful to make an annotated bibliography , where you compile full citation information and write a paragraph of summary and analysis for each source. This helps you remember what you read and saves time later in the process.

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To begin organizing your literature review’s argument and structure, be sure you understand the connections and relationships between the sources you’ve read. Based on your reading and notes, you can look for:

• Trends and patterns (in theory, method or results): do certain approaches become more or less popular over time?
• Themes: what questions or concepts recur across the literature?
• Debates, conflicts and contradictions: where do sources disagree?
• Pivotal publications: are there any influential theories or studies that changed the direction of the field?
• Gaps: what is missing from the literature? Are there weaknesses that need to be addressed?

This step will help you work out the structure of your literature review and (if applicable) show how your own research will contribute to existing knowledge.

• Most research has focused on young women.
• There is an increasing interest in the visual aspects of social media.
• But there is still a lack of robust research on highly visual platforms like Instagram and Snapchat—this is a gap that you could address in your own research.

There are various approaches to organizing the body of a literature review. Depending on the length of your literature review, you can combine several of these strategies (for example, your overall structure might be thematic, but each theme is discussed chronologically).

Chronological

The simplest approach is to trace the development of the topic over time. However, if you choose this strategy, be careful to avoid simply listing and summarizing sources in order.

Try to analyze patterns, turning points and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred.

If you have found some recurring central themes, you can organize your literature review into subsections that address different aspects of the topic.

For example, if you are reviewing literature about inequalities in migrant health outcomes, key themes might include healthcare policy, language barriers, cultural attitudes, legal status, and economic access.

Methodological

If you draw your sources from different disciplines or fields that use a variety of research methods , you might want to compare the results and conclusions that emerge from different approaches. For example:

• Look at what results have emerged in qualitative versus quantitative research
• Discuss how the topic has been approached by empirical versus theoretical scholarship
• Divide the literature into sociological, historical, and cultural sources

Theoretical

A literature review is often the foundation for a theoretical framework . You can use it to discuss various theories, models, and definitions of key concepts.

You might argue for the relevance of a specific theoretical approach, or combine various theoretical concepts to create a framework for your research.

Like any other academic text , your literature review should have an introduction , a main body, and a conclusion . What you include in each depends on the objective of your literature review.

The introduction should clearly establish the focus and purpose of the literature review.

Depending on the length of your literature review, you might want to divide the body into subsections. You can use a subheading for each theme, time period, or methodological approach.

As you write, you can follow these tips:

• Summarize and synthesize: give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: don’t just paraphrase other researchers — add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
• Critically evaluate: mention the strengths and weaknesses of your sources
• Write in well-structured paragraphs: use transition words and topic sentences to draw connections, comparisons and contrasts

In the conclusion, you should summarize the key findings you have taken from the literature and emphasize their significance.

When you’ve finished writing and revising your literature review, don’t forget to proofread thoroughly before submitting. Not a language expert? Check out Scribbr’s professional proofreading services !

This article has been adapted into lecture slides that you can use to teach your students about writing a literature review.

Scribbr slides are free to use, customize, and distribute for educational purposes.

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If you want to know more about the research process , methodology , research bias , or statistics , make sure to check out some of our other articles with explanations and examples.

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A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

There are several reasons to conduct a literature review at the beginning of a research project:

• To familiarize yourself with the current state of knowledge on your topic
• To ensure that you’re not just repeating what others have already done
• To identify gaps in knowledge and unresolved problems that your research can address
• To develop your theoretical framework and methodology
• To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

The literature review usually comes near the beginning of your thesis or dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

A literature review is a survey of credible sources on a topic, often used in dissertations , theses, and research papers . Literature reviews give an overview of knowledge on a subject, helping you identify relevant theories and methods, as well as gaps in existing research. Literature reviews are set up similarly to other  academic texts , with an introduction , a main body, and a conclusion .

An  annotated bibliography is a list of  source references that has a short description (called an annotation ) for each of the sources. It is often assigned as part of the research process for a  paper .  

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Literature Reviews: A Working Definition

A literature review is a methodical or organized review of the published literature on a specific topic or research question designed to analyze--not just summarize--scholarly writings that are related directly to your research question. That is, it represents the literature that provides the context for your research and shows a correspondence between those writings and your own work.

Before you get started...

The past few years have seen an explosion of online tools designed to automate the process of doing literature reviews. These tools generally work by asking you to identify a relevant article (often called a "seed article") and use the metadata attached to articles (such as authors and keywords), or citations and reference lists to find related articles. Most tools offer some type of visualization feature to trace the connections between papers, and increasingly, tools offer summaries of the research content. These tools provide researchers with an option to at least partially automate some of their literature review work which can save a lot of time.

Things to keep in mind:

• Very little independent research has been done to test the reliability, scope, and accuracy of these tools
• In our own testing of tools that provide summaries of articles, we have sometimes found that summaries do not reflect the same key take-aways that we have identified
• Reproducibility of searches is questionable so they may not be the best choice for things like systematic reviews
• Because of the reliance on citation chaining, there is a built in bias towards heavily cited works which ends up creating a feedback loop that may cause you to miss relevant and/or newer materials
• Not everything is indexed in the data sets used by a given tool; this is particularly the case in the arts and humanities which are more oriented towards books
• Both the tools themselves, many of which are open access projects, and the indices they rely on may stop being updated/maintained, or go offline for a variety of reasons
• You still need to use a library to access full text in a majority of cases

NOTE: This is a rapidly evolving field and we will be updating this guide on a regular basis.

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How to Construct Literature Maps

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This LibGuide will help you

This LibGuide will help you locate resources for constructing a literature map.  If you need more assistance please click on the 24/7 Chat service or contact me using the links on the left hand side of the page.

Resources for Creating Literature Maps

• Owl English's Resource for Literature Mapping This resource provides an overview of stasis theory and what you can do with it to help you conduct research, compose documents, and work in teams.
• Wilson Library's "Sage Research Methods" Resources on Literature Mapping This resource provides suggestions for books, articles, videos and more for designing literature maps.

Visual of How to Create a Literature Map

• Sample Look at a Literature Map (scroll to bottom of page) This is an example of the literature review process, and in particular, literature mapping (scroll to the bottom of the page).

Sample Charts for Designing Literature Review

• Sample Designs for Literature Mapping
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Howard Aldrich

Kenan professor of sociology, dept of sociology @ unc chapel hill.

Powerful Tools for Mapping a Research Literature

Professor Courtney Page Tan , Assistant Professor of Human Resilience in the Department of Security and Emergency Services at Embry-Riddle Aeronautical University, has compiled a list of powerful literature mapping tools. You can use these tools to increase the scale and scope of the literature for your projects. Many provide stunning graphical displays of search results (Edward Tufte would approve).

Connected Papers lets you explore connected papers in a visual graph, beginning with a starter paper you select. You can start with a DOI, URL, or paper title. Purposes: (1) Get a visual overview of a new academic field; (2) Make sure you haven’t missed an important paper; (3) Create the bibliography to your thesis; and (4) Discover the most relevant prior and derivative works.

scite_ Smart Citations for Intelligent Research . Smart Citations allow users to see how a scientific paper has been cited by providing the context of the citation and a classification describing whether it provides supporting or disputing evidence for the cited claim. They claim a database of over 23 million full-text articles.

Open Knowledge Maps . Calling themselves a “visual interface to the world’s scientific community,” their tool allows you to start with a few keywords to search for literature on a topic. Results display the main areas at a glance, and papers related to each area. In addition to giving you an overview of the area, it helps you identify important concepts. They highlight open access papers in their search results.

Local Citation Network . You input an article using its DOI or a scanned copy containing DOIs and the program shows you suggested articles for you to follow up.

They explain that “This web app aims to help scientists with their literature review using metadata from Microsoft Academic and Crossref . Academic papers cite one another, thus creating a citation network (= graph) . Each node (= vertex) represents an article and each edge (= link / arrow) represents a reference / citation. Citation graphs are a topic of bibliometrics, for which other great software exists as well .

This web app visualizes subsets of the global citation network that I call “local citation networks,” defined by the references of a given set of input articles. In addition, the most cited references missing in the set of input articles are suggested for further review.”

Citation Gecko Gecko is designed to help you find the most relevant papers to your research and give you a more complete sense of the research landscape. Users start from a small set of ‘seed papers’ that define an area you are interested. Gecko will search the citation network for connected papers allowing you to quickly identify important papers you may have missed.

PRISMA Flow Diagram Generator . This is the most complex of the tools. It generates a graphical representation of the flow of citations reviewed in the course of a Systematic Review. Click here for an example.

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LITERATURE REVIEW SOFTWARE FOR BETTER RESEARCH

“This tool really helped me to create good bibtex references for my research papers”

Ali Mohammed-Djafari

Director of Research at LSS-CNRS, France

“Any researcher could use it! The paper recommendations are great for anyone and everyone”

Swansea University, Wales

“As a student just venturing into the world of lit reviews, this is a tool that is outstanding and helping me find deeper results for my work.”

Franklin Jeffers

South Oregon University, USA

“One of the 3 most promising tools that (1) do not solely rely on keywords, (2) does nice visualizations, (3) is easy to use”

Singapore Management University

“Incredibly useful tool to get to know more literature, and to gain insight in existing research”

KU Leuven, Belgium

“Seeing my literature list as a network enhances my thinking process!”

Katholieke Universiteit Leuven, Belgium

“I can’t live without you anymore! I also recommend you to my students.”

Professor at The Chinese University of Hong Kong

“This has helped me so much in researching the literature. Currently, I am beginning to investigate new fields and this has helped me hugely”

Aran Warren

Canterbury University, NZ

“It's nice to get a quick overview of related literature. Really easy to use, and it helps getting on top of the often complicated structures of referencing”

Christoph Ludwig

Technische Universität Dresden, Germany

“Litmaps is extremely helpful with my research. It helps me organize each one of my projects and see how they relate to each other, as well as to keep up to date on publications done in my field”

Daniel Fuller

Clarkson University, USA

“Litmaps is a game changer for finding novel literature... it has been invaluable for my productivity.... I also got my PhD student to use it and they also found it invaluable, finding several gaps they missed”

Varun Venkatesh

Austin Health, Australia

3 Innovative Literature Mapping Tools for Citation Maps 

In the ever-evolving landscape of academic research, navigating through vast amounts of literature can be daunting. Enter innovative literature mapping tools, packed with unique features.

They simplify and revolutionise the way researchers interact with scientific literature, enhancing the efficiency and depth of literature reviews.

Let’s dive into how these tools are reshaping the approach to academic research.

Innovative Literature Mapping Tools

What is a literature mapping tool.

A citation mapping tool is a game-changer. Think of it as a detective tool that uncovers the intricate web of connections within scientific literature.

These tools visualise citation relationships, creating a citation map or literature map that guides you through the complex maze of scholarly papers.

One popular example is Inciteful, offering innovative literature mapping tools that not only track citation links but also analyse the context of the citation, revealing direct citation relationships and co-citation networks.

Imagine you have a ‘seed paper,’ a starting point in your literature review. A literature mapping tool then take this seed paper and branch out, finding papers:

• That cite it (direct citation relationships) or
• Those that share a thematic connection (co-citation). 

This forms a citation tree or network, showing you not just one paper but a cluster of similar papers, interconnected by their citation relationships.

More modern citation mapping tool also integrated AI. They not only map out citation relationships but also delve into the citation context or sentiment, offering a richer, more nuanced understanding of how papers are interconnected. 

Litmaps is a cutting-edge citation mapping tool that offers a unique approach to visualising the connections in scientific literature.

It’s designed to simplify and enhance the process of conducting a literature review, especially for researchers looking to map out the citation landscape of a specific topic.

At its core, Litmaps lets you visualise citation relationships in a dynamic, interactive manner. It works by creating a literature map that shows how different papers are connected through citations. 

You start with a ‘seed paper,’ and Litmaps builds a citation network around it, by:

• Identifying seminal papers,
• similar papers, and 
• Other papers that cite your chosen article.

This is particularly helpful for understanding the context and development of research in a given field.

One of the key features of Litmaps is its ability to create a citation tree. This tree not only shows direct citation relationships but also highlights co-citations. This gives you a deeper insight into how ideas and research are interconnected.

In terms of visualisation, Litmaps excels. It uses a similarity graph, not just a standard citation graph, to display connections.

This means you’re seeing a more nuanced representation of the literature, based on the similarity metric of papers, rather than just citation counts.

Litmaps also allows for a high level of customisation. You can filter papers based on:

• The number of citations,
• Publication date, and even
• Specific keywords.

This makes it a highly flexible tool for conducting systematic reviews and meta-analysis.

Litmaps also have a more user-friendly interface, and additional features like tracking the latest papers on a specific topic or a random set of systematic reviews.

Inciteful is an innovative literature mapping tool that stands out in the field of academic research for its unique approach to visualizing citation networks.

This tool is designed to make the process of literature review more intuitive and insightful, especially for researchers and scholars delving into new or complex fields.

When you use Inciteful, you start by selecting a ‘seed paper’. From this single paper, Inciteful creates a citation network, branching out to reveal not only papers that cite your chosen article but also those that are contextually related through co-citation and citation relationships.

This forms a comprehensive citation map, allowing you to see how various research pieces interconnect.

A standout feature of Inciteful is its visualization capabilities. The tool presents a citation graph, where each node represents a paper, and connecting lines indicate citation links.

This visualization helps you grasp the structure of scientific discourse in a field, revealing seminal papers, emerging trends, and key authors. You can then filter and sort papers based on keywords, number of citations, or publication date.

Inciteful isn’t just about numbers of citations; it delves deeper. The tool analyzes the context of citations, bringing to light the sentiment and relevance of each citation relationship.

This adds an extra layer of depth to your literature review, offering insights that go beyond traditional citation counting. Inciteful Incorporates metadata from various sources like:

• Google Scholar,
• Web of Science, and
• Microsoft Academic

Inciteful also ensures that its citation network is rich and current. The tool also supports importing bibliographic data in BibTeX format, making it flexible and adaptable to various research needs.

This makes Inciteful not just a powerful research tool but also a highly customizable one, suited for everything from quick overviews to in-depth systematic reviews.

Connected Papers

Connected Papers is a cool literature mapping tool that offers researchers and scholars an intuitive way to explore the citation network of a specific paper or topic.

It stands out compared to the other mapping tools for its user-friendly design and effective visualisation techniques.

Connected Papers takes a ‘seed paper’ of your choice, then generates a citation graph based on the seed paper, producing a visual network that displays how this paper is connected to others through direct citations and co-citations.

This network reveals the most relevant papers, showing you the ‘big picture’ of research trends and developments related to your topic.

The citation graph in Connected Papers isn’t just a simple map; it’s a detailed visualisation tool. Each node represents a paper, and the lines between them indicate citation relationships.

This visualisation allows you to easily identify:

• Research papers,
• Citations, and even 
• Emerging trends in the field.

You can see at a glance which papers are most cited and how they interlink, providing a comprehensive overview of the scientific landscape.

Connected Papers uses metadata and bibliographic information from databases like Google Scholar, Web of Science, and Microsoft Academic. This ensures that the citation network you’re exploring is both extensive and up-to-date.

It also supports importing data in BibTeX format, making it versatile for different research needs.

This tool is particularly valuable for researchers who are looking to map out the landscape of a new or complex field. It helps in identifying related papers that might not be immediately obvious, providing a deeper understanding of the subject matter.

Literature Review Made Easy, With Citation Map Tools

Litmaps, Inciteful, and Connected Papers represent the forefront of academic research tools, each bringing a unique approach to literature mapping.

They empower researchers with advanced visualisation, comprehensive citation networks, and user-friendly interfaces, making literature reviews more efficient and insightful.

As the landscape of scientific research continues to grow, these tools are invaluable allies in navigating and understanding the complex web of academic knowledge.

Dr Andrew Stapleton has a Masters and PhD in Chemistry from the UK and Australia. He has many years of research experience and has worked as a Postdoctoral Fellow and Associate at a number of Universities. Although having secured funding for his own research, he left academia to help others with his YouTube channel all about the inner workings of academia and how to make it work for you.

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What is a literature matrix?

As defined by Judith Garrard in her handbook entitled  Health Sciences Literature Reviews Made Easy: The Matrix Method , a “Review of the literature consists of reading, analyzing, and writing a synthesis of scholarly materials about a specific topic. When reviewing scientific literature, the focus is on the hypotheses, the scientific methods, the strengths and weaknesses of the study, the results, and the authors’ interpretations and conclusions.” When reading materials for a literature review, you should critically evaluate the study’s major aims and results. 

The purpose of completing a literature matrix is to help you identify important aspects of the study. Literature matrixes contain a variety of headings, but frequent headings include: author surname and date, theoretical/ conceptual framework, research question(s)/ hypothesis, methodology, analysis & results, conclusions, implications for future research, and implications for practice. You can add additional columns as needed, and you might consider adding a “notes column” to proactively have important quotations and your thoughts already collected.  As you read journal articles, have your literature matrix ready. It is best to fill in the matrix directly after reading a work, rather than returning to the matrix later.  

Literature Matrix Files

You should use a literature matrix that best helps you to organize your reading and research. Excel workbooks can help to organize your research. Sample basic and complex literature matrixes are provided below: 

• Literature Matrix Basic BLANK
• Literature Matrix Basic SAMPLE
• Literature Matrix Complex BLANK

Synthesize vs. Summarize

When writing your literature review, you will not simply summarize the materials that you found related to your topic. A summary is a recap of the information provided in research articles. Summaries provide basic information about the study, but the details provided in a summary are not enumerative or systematic. 

Synthesizing goes beyond summarizing to explore specific aspects of the research study. When synthesizing the literature, rely on your completed literature matrix to inform your writing. Do you see any tends across publications? Was one type of methodology used repeatedly, why or why not? Did separate teams of researchers come to the same conclusion, differing conclusions, or is the literature inconclusive? Synthesizing requires that you look at the current state of the research overall. 

When preparing to write a synthesis, you will read the literature available, tease apart individual findings and supporting evidence across different articles, and then reorganize this information in a way that presents your understanding of the current state of research in this field.  

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What is a “mapping study?”

You are familiar with those short literature reviews in the introduction of research studies. The author provides a brief background to the study, highlighting related research. You also know about review articles in which writers describe a batch of articles that they have selected. If there were a “reliability” spectrum of review articles, both of these would be on the low end—not because they are necessarily inaccurate, but because they were selected by the writer and may be biased.

On the other end of the spectrum is the systematic review, which, if done correctly, eliminates (or greatly reduces) possible bias. So it is felt to be the most reliable.

These types of reviews deal with the substance of the article's content. Something is studied, and the focus is on the results: “Here is what we found.” The review discusses the findings.

Mapping studies are also reviews, but they do not discuss the findings. They are based on the concept that published articles not only represent findings, but, indirectly, represent activity related to the finding. For example, an article that presents findings of a study at a community center of an education intervention to improve health represents not only the study results, but it also represents that research on community health education took place. The article also indicates where the research took place and, of course, in what journal it was published. So mapping collects data on kinds of activity, locations where it occurs, and media where it is published.

On the spectrum of reliability, mapping, if done correctly, is on the higher reliability end of the spectrum but still has some vulnerability: decisions about “core,” zones, and limits are arbitrary.

So, what is mapping? It is a review that seeks to identify, not results, but linkages. Mapping focuses on characteristics such as where the activity took place, where the funding came from, and in what journal or other medium it was presented. Mapping often focuses on published items but need not; some mapping studies include other media (e.g., books, newspapers, grant proposals).

Some definitions say mapping follows the flow of information through publications. The weakness of this definition is that citations may refer to established information, such as a laboratory test designed years ago; such citations do not represent flow of information. The information has been sitting in the researcher's information bin for years.

“Mapping” also sometimes refers to “concept maps,” which are visual tools that organize and display knowledge in a visual way, such as using flow charts, graphs, and Venn diagrams.

“Scoping reviews” also track down published studies but are more similar to systematic reviews. Compared to systematic reviews, scoping reviews do focus on findings but do not always have quality as an initial requirement to be included, and synthesis of data is typically more qualitative [ 1 ].

EXAMPLES OF MAPPING

Mapping research is performed in many disciplines. The method is sometimes called a systematic mapping review.

Have you ever wondered about the distribution of social content in Wikipedia? A mapping study found that the highest percent of articles, 30%, dealt with culture and the arts. The next 3 topics, in order, were “people and self,” geography and place, and society and social sciences. Health and fitness was eighth, taking up 2% of the social content articles [ 2 ]. This study was led by Aniket Kittur, an expert in human-computer interaction, social computing, and social networks.

Have you ever wondered about agricultural research in India? (You might, if you were a government policy advisor.) Most publications are on plants of economic interest, and the greatest subtopic is “Pests, pathogens and biogenic diseases of plants,” according to a mapping study by Subbiah Arunachalam, an editor and scientometricist. The professor added, “This macroscopic analysis not only provides an inventory of India's publications, but also gives an idea of endogenous research capacity. If appropriately linked with public policy, it can help restructure the nation's research priorities” [ 3 ].

If you wondered about the state of research about physical activity programs for adolescents, you would appreciate another recent mapping study. It found that most researchers used randomized controlled studies (about 80%), and most studies used self-report, although a third used pedometers or accelerometers [ 4 ]. They also found that research on the topic had increased recently.

MAPPING IN LIBRARY SCIENCES

Have you ever wondered about where clinical laboratory science and medical technology literature is published? A typical library science mapping study was done by Frances Delwiche. She found that the Cumulative Index to Nursing and Allied Health Literature was the only database with complete coverage of the key journals. Delwiche said her study's goals were “to identify the predominant format of literature used in this field, the currency of the literature most frequently used, the core journals of the field, and the level of indexing coverage of the core journals by the major bibliographic databases. The results will serve as a valuable aid to librarians responsible for collection development in the field” [ 5 ].

In library science, many mapping studies focus on finding journals that publish the greatest number of related papers. These journals would be of higher priority for purchasing. The list may also be instructive to faculty, for example, to scan tables of contents.

HOW DOES IT WORK?

Here is an example to illustrate the literature mapping process. This is an imaginary exercise, and the data are made up. Suppose you want to map the literature of pediatric podiatry research. What this means is, you want to describe where the published research is coming from.

First, you identify the major journals related to pediatric podiatry. You ask people who use pediatric podiatry information what they think are the key or most important research journals for them. There are other ways to find major journals: For example, impact factors might be used; however, a journal's impact factor may be due to its publication of articles not related to pediatric podiatry. Regardless of the method used to select major journals, the process is a judgment call. Usually, you decide there are a handful of major journals.

Then you search the major journals for every article related to pediatric podiatry published in the past 3 years. You find 100 articles. From these articles, you extract all the references that they cite. This becomes your database. Each article has about 7 end-of-article reference citations, so you have 700 items.

For each of the 700 items (citations) in your database, you have or can find the name of the journal it was published in (its origin), the location of the researchers, and the source of funding. You can group your items by any characteristic you wish. Perhaps you want to know where the research is coming from: you group by location of the researchers. Perhaps you want to know where the funding comes from: you group by funding source. We are librarians, so we group by the title of the journal.

You then have a database, a list. Each row will have the journal name and the number of articles in that journal that were cited by articles related to pediatric podiatry in the major journals. For example, the Journal of Podiatry might be at the top of the list, as it was the source journal for 100 citations in the major journals. The next highest number might be 50, associated with the Annals of Podiatry . The third might be Pediatric Orthopedics (a surprise to you) with 25 citations. These 3 journals accounted for 175 or one quarter of the total. You want to find the journals that are sources for much of the work, which is usually about a third of the database items, so you add 4 more journals to your list until you reach 233 total citations (1/3 of 700). You label these 7 journals as in Zone 1 for journals that provide important information as defined by having many articles cited in a major journal.

Now, you want to define Zone 2. You go down your list until you find journals that were sources for another 233 citations. There will undoubtedly be more than 7 journals, following Bradford's Law of Scattering ( Figure 1 ). Bradford's Law does not provide a proscriptive formula: journals can be moved in and out of Zone 1 to make the map fit the pattern. In this case, there are 14 more journals, and you label them as being in Zone 2.

Bradford's Law of Scattering

You can now advise librarians that two-thirds of important literature related to pediatric podiatry will likely be in journals that are in the 21 (7+14) journals that are in Zone 1 or Zone 2 of your list.

If you had done the sorting by researcher location, you might have said that most of the research came from large Midwestern states or something like that.

If you had done the sorting by funding source, you might have said that most of the funding came from the National Institutes of Health, and second was the Pediatric Podiatry Foundation.

The Nursing and Allied Health Resources Section mapping review process is described in a separate article (See Perryman: “Mapping Studies,” this issue).

ACKNOWLEDGMENT

Thank you to Shelley Arvin, Cunningham Memorial Library, Indiana University, for contributing to this manuscript.

I. Diane Cooper, MSLS, AHIP, moc.liamg@xobrotidealmj , Editor-in-Chief, Journal of the Medical Library Association

Application of literature maps and literature matrices for quick and effective literature reviews

What is a literature review, and why do we need a map, what is a literature map, how does a literature map solve the problem .

understanding the critical issues, proper methodologies and research findings in the literature,

organising the flow of ideas using a structured document. 

Understanding the relationships between different studies and groupings according to similar findings or methodologies. 

How does one prepare a literature map?

Write your main topic in a text box at the top. 

Decide on a few important subtopics related to the main topic, and write them down below it. 

For each subtopic, decide on a few crucial points of research and one by one, write them down below the relevant subtopic, as shown in Figure 1. 

Search Google Scholar or your favorite publication repository for good research articles pertaining to each point and record the primary author's name and the year of publication. 

Download those articles and save them in your Mendeley library or at your desired location.  

You may need to spend a reasonable amount of time preparing this map. Once it has been finalised, the map can be used to conduct a planned and structured literature review.

Citation mapping;

Concept mapping;

Feature mapping;

Topic-tree mapping;

Content mapping; or

Taxonomic mapping. 

Connected papers ;

Inciteful ;

Scite ; and

Semantic Scholar .

What is a Literature matrix, and how can it be useful?

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Literature mapping.

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Research Rabbit

Research Rabbit creates citation maps as well as networks of recommended articles based on user provided collections of articles. You can get article and collaborator recommendations, set alerts, and share collections. User account required for use, but always free.

• Import collection from Zotero or build a new collection using Pubmed ID, DOI, or keyword search.
• Literature maps include network view and timeline view.

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Visualization Analysis of Metaverse Research Situation Based on CiteSpace

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