literature review computer science project

Computer Science

• Key resources
• Databases and journal articles
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What is a literature review?

Finding the gaps and advances in your area, literature review resources, annotated bibliography.

A literature review is a survey and critical analysis of what has been written on a particular topic, theory, question or method.

What is its purpose?

• justify your research
• provide context for your research
• ensure that the research has not been done before
• highlight flaws in previous research
• identify new ways, to interpret and highlight gaps in previous research
• signpost a way forward for further research
• show where your research fits into the existing literature
• Literature reviews guide The Literature reviews guide contains detailed information on the process of searching for and producing literature reviews.
• Scopus A multidisciplinary abstract and citation database of peer reviewed literature, book reviews and conference proceedings.
• Web of Science A collection of citation databases and citation analysis tools covering the sciences, social sciences, arts and humanities.
• IEEE Xplore digital library Provides full-text access to IEEE and IEE transactions, journals, magazines and conference proceedings published since 1988 and current IEEE Standards.
• ACM digital library publications Full text of every article published by the Association for Computing Machinery (ACM) and bibliographic citations from major publishers in computing
• Annual reviews online This database provides review journals from across the sciences, with articles that review significant primary research literature.
• Cited reference searching

Books and other resources for approaches and methods on doing a literature review. See the Literature reviews guide .

An annotated bibliography provides:

• a list of references presenting a brief summary of the main arguments or ideas of each resource.
• a critique or evaluation of the resource's usefulness, reliability, objectivity or bias
• a reflection on how the resource fits into your research.
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Computer Science and Engineering

• Getting Started
• Keeping Current

Introduction

Gather Your Tools

Determine the Project's Scope

Create the Search Strategy

Determine What Resources to Use

Search, read, refine, repeat.

Saved Searches, Alerts and Feeds

• STEM Biographies & Info
• Writing & Citing

This page focuses on how to do an in-depth literature review for a dissertation, thesis, grant application or lengthy term paper in electrical engineering.  

• For a more general description of what an in-depth literature review is and how it looks, see our guide on " Literature Reviews and Annotated Bibliographies " created by Ed Oetting, history and political science librarian.
• For lower-level engineering undergraduate students who are doing a short term paper, the " How to Research a Topic " page on the " Engineerng Basics" guide may be more applicable.

Library Account Is your library account clear of fines?   If not, you may not be allowed to check out more books nor renew books you already have.  All library notices are sent via email to your "asu.edu" address; if you prefer to receive email at a different address make sure you have forwarded your asu.edu correctly.  Also, make sure that your spam filter allows the library email to come through. 

Illiad (Interlibrary Loan) Account   If you don't already have an ILLiad account, please register for one.  Interlibrary loan services will get you material not available at the ASU Library and also scan or deliver materials from the libraries on the other ASU campuses.

Determine the Project's Scope.

Do you know what you are looking for?  Can you describe your project using one simple sentence or can you phrase the project as a question?  Without a clear idea of the project, you may not be able to determine which are the best resources to search, what terminology should be used in those resources, and if the results are appropriate and sufficient.    

If you're having difficulty getting your project described succinctly, try using a PICO chart to identify the concepts involved:

• P is the popluation, problem, predicament or process
• I is the intervention or improvement
• C is what you'll compare your intervention/improvment to, and
• O is the outcome (or results of the comparison of I and C ) 

For example: 

Your client, the owner of a nuclear power generating facility, has had several less than optimal safety inspections recently.  The inspectors have singled out operator error as a major concern and have required changes in employee training.  But is more training the solution?  The employees complain that the plant's poorly designed control room hampers their ability to respond to non-standard situations.  Could a redesign improve performance and decrease the occurance of unsafe events?   Your client wants more than just your opinion, he wants to see the data to back it up.   So, what can you find in the literature?

Here's one way that the PICO chart could be filled out:     

• P =   nuclear power safety  
• I  = human factors engineering
• C  =  additional training; little or no human factors engineering used  
• O = accident rate or safety inspection comparison

And here are examples of possible search statements:  

• I am looking for ways that human factors engineering can improve safety in the nuclear power industry.
• Is additional training or employing human factors engineering the better method for reducing safety violations in a nuclear power plant? 

Your research will always start with a " P AND I " search; those are the most important pieces of the puzzle.  However, once you have the results from that search, you'll need to know where you want to go with those results; that's when the C and O concepts need to be considered.  

 Also, don't forget --- determine if your project has limits.  For example:

• Are you reviewing the literature only within a specific time frame?
• Are you looking at English-language material only?
• Are you considering research from just the United States or worldwide?
• Are there types of material you won't be covering (trade magazines, patents, technical reports, etc.)?  

Take the simple sentence or question that describes what you are looking for.  What are the concepts in the sentence? Are there synonyms that describe the same concept?   If you filled out a PICO chart, concentrate on the  P (problem) and the  I (intervention) for the concept chart.  

Concept Chart:

Concept 1:   _______  OR _______  OR _______  AND Concept 2:   _______   OR   _______  OR   _______  AND Concept 3:  _______  OR  _______  OR   _______ 

  Example:  

I am looking for ways that human factors engineering can improve safety in the nuclear power industry. 

Concept 1:   nuclear power    OR _ nuclear industry _____   AND Concept 2:   _safety___  OR   _accident prevention____   AND Concept 3: _ human factors engineering ___   

What resources you'll use for your literature review depends on what types of materials you want to find.  

• Background Information The more you know about a topic, the better you'll be able to research it.  You'll be familiar with the terminology, understand the underlining science/technology and be aware of the issues in the field. Most importantly, you'll be able to understand what you've retrieved from your search.  But no matter how much you know before hand you'll likely run across terms and concepts with which you're unfamiliar.    Materials such as encyclopedias, dictionaries and handbooks will not only help you learn about the basics of your topic before you begin your search but they'll also help you understand the terminology used in the documents you found from your literature review.    You'll find these types of resources listed on the Dictionaries and Handbooks pages on this guide.
• Books The large size of books (usually 100-500 pages) allows a topic to be studied braodly, covering many different issues.  Conversely, the large size also allows for a specific aspect of the topic to be covered in great detail.  Because of the time it takes to publish, sci-tech books generally do not contain the most current information. To find print and online books from both the ASU Library as well as in other libraries, see the Books page on this guide.
• Conference Papers Scientists and engineers frequently present new findings at conferences before these findings are written up in journal articles or books.  Not every conference, however, publishes it proceedings.  In some cases, conferences publish only a few of the papers presented but not all.   Many resources that help you find journal articles, may also be used to find conference papers, see the Articles page on this guide.
• Journal and Trade Magazine Articles Articles in journals (also called magazines) are short, usually 5-20 pages in length and cover a specific finding, experiment or project.  Articles in scholary journals are usually written by academics or professional scientists/engineers and are aimed at others at the same level.   Articles in trade journals/magazines are written by the journal staff and report on industry news suchs as sales, mergers, prices, etc.   To find journal and trade magazine articles, use the resources listed on the Articles page on this guide. 
• Patents Patents are grants from governments that gives the inventor certain rights of manufacture.  Patents provide a wealth of information for how a technology is being advanced and by which companies.  It is frequently stated that 80% of the information in patents never appears elsewhere in the literature. 
• To identify patents granted in the U.S. and internationally see the " Searching for Patents " guide.
• To see statistical information for U.S. patents by technology class see the US Patent and Trademark's website.
• Technical Reports Technical reports are part of the "gray literature";  gray literature refers to documents that are not published commercially, hence they are difficult to both identify and find.  Technical reports focus on a specific experiment or research project and are meant to convey the results of the experiment or project back to the funding organization.  In the United States, common sources of technical reports are the government agencies that sponsor research projects.  Reports generated within a private corporation and funded soley by that corporation are seldom ever available to anyone outside of the company.      To find technical reports, use the resources listed on the Technical Reports page on this guide.     

Search, Read, Refine and Repeat

Now it's time to apply your search strategy in the resources you've decided to use.

• Use the Advanced Search feature (or whatever search is set up with the 3 lines of boxes) and enter your search strategy just as you recorded in your search strategy chart.  Don't forget to set your limits.   If the resource only provides a single search box, rearrange your chart from vertical into horizontal so that the search statement looks like this:   (Concept#1 OR synonym) AND (Concept#2 OR synonym) AND (Concept#3 OR synonym) Example: (nuclear power OR nuclear industry) AND (safety OR accident prevention) AND (human factors engineering)
• Examine the results to find the most appropriate items.  Keep your one-sentence project description (and/or your PICO chart) in mind to help you stay on track.
• Export the records/citations you want to keep into a citation manager.
• If there are subjects (may also be called subject headings, index terms, descriptors or controlled vocabulary) assigned to each item, make sure that those also transferred into a citation manager.  If not, add them manually.
• Get the full text of the items 
• Read the full text of the items and look at the subjects assigned to the item and consider:
• Do I have to change (narrow) my topic to something more specific because I'm finding way too much? 
• Do I have to change (broaden) my topic because I can't find enough about it? 
• Is there additional terminology for my topic/concepts that I hadn't included in my original search?
• Redo your search strategy according to what you found in step #6 and rerun the search in the resources again.
• You may need to repeat this cycle several times before you are able to identify the best terminology to use in each resource. 

If there will be several months in between when you search the literature and when you turn in the paper, consider setting up alerts and feeds so that you are notified should new items about your topic appear.   How you set up an alert or feed will vary.  In most cases you'll be required to set up a personal account or profile with the journal or database --- there is no charge for this but you will have to identify yourself and provide an email address.  

For instructions on setting up alerts and feeds, see the " Keep Current " page.

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Computer Science: Systematic Reviews

• Articles, eBooks, & Databases
• Technical Reports & Standards
• Software & Programming Languages
• Systematic Reviews

What Is a Systematic Review?

Regular literature reviews are simply summaries of the literature on a particular topic. A systematic review, however, is a comprehensive literature review conducted to answer a specific research question. Authors of a systematic review aim to find, code, appraise, and synthesize all of the previous research on their question in an unbiased and well-documented manner. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) outline the minimum amount of information that needs to be reported at the conclusion of a systematic review project. 

Other types of what are known as "evidence syntheses," such as scoping, rapid, and integrative reviews, have varying methodologies. While systematic reviews originated with and continue to be a popular publication type in medicine and other health sciences fields, more and more researchers in other disciplines are choosing to conduct evidence syntheses. 

This guide will walk you through the major steps of a systematic review and point you to key resources including Covidence, a systematic review project management tool. For help with systematic reviews and other major literature review projects, please send us an email at  [email protected] .

Getting Help with Reviews

Organization such as the Institute of Medicine recommend that you consult a librarian when conducting a systematic review. Librarians at the University of Nevada, Reno can help you:

• Understand best practices for conducting systematic reviews and other evidence syntheses in your discipline
• Choose and formulate a research question
• Decide which review type (e.g., systematic, scoping, rapid, etc.) is the best fit for your project
• Determine what to include and where to register a systematic review protocol
• Select search terms and develop a search strategy
• Identify databases and platforms to search
• Find the full text of articles and other sources
• Become familiar with free citation management (e.g., EndNote, Zotero)
• Get access to you and help using Covidence, a systematic review project management tool

Doing a Systematic Review

• Plan - This is the project planning stage. You and your team will need to develop a good research question, determine the type of review you will conduct (systematic, scoping, rapid, etc.), and establish the inclusion and exclusion criteria (e.g., you're only going to look at studies that use a certain methodology). All of this information needs to be included in your protocol. You'll also need to ensure that the project is viable - has someone already done a systematic review on this topic? Do some searches and check the various protocol registries to find out. 
• Identify - Next, a comprehensive search of the literature is undertaken to ensure all studies that meet the predetermined criteria are identified. Each research question is different, so the number and types of databases you'll search - as well as other online publication venues - will vary. Some standards and guidelines specify that certain databases (e.g., MEDLINE, EMBASE) should be searched regardless. Your subject librarian can help you select appropriate databases to search and develop search strings for each of those databases.  
• Evaluate - In this step, retrieved articles are screened and sorted using the predetermined inclusion and exclusion criteria. The risk of bias for each included study is also assessed around this time. It's best if you import search results into a citation management tool (see below) to clean up the citations and remove any duplicates. You can then use a tool like Rayyan (see below) to screen the results. You should begin by screening titles and abstracts only, and then you'll examine the full text of any remaining articles. Each study should be reviewed by a minimum of two people on the project team. 
• Collect - Each included study is coded and the quantitative or qualitative data contained in these studies is then synthesized. You'll have to either find or develop a coding strategy or form that meets your needs. 
• Explain - The synthesized results are articulated and contextualized. What do the results mean? How have they answered your research question?
• Summarize - The final report provides a complete description of the methods and results in a clear, transparent fashion. 

Adapted from

Types of reviews, systematic review.

These types of studies employ a systematic method to analyze and synthesize the results of numerous studies. "Systematic" in this case means following a strict set of steps - as outlined by entities like PRISMA and the Institute of Medicine - so as to make the review more reproducible and less biased. Consistent, thorough documentation is also key. Reviews of this type are not meant to be conducted by an individual but rather a (small) team of researchers. Systematic reviews are widely used in the health sciences, often to find a generalized conclusion from multiple evidence-based studies. 

Meta-Analysis

A systematic method that uses statistics to analyze the data from numerous studies. The researchers combine the data from studies with similar data types and analyze them as a single, expanded dataset. Meta-analyses are a type of systematic review.

Scoping Review

A scoping review employs the systematic review methodology to explore a broader topic or question rather than a specific and answerable one, as is generally the case with a systematic review. Authors of these types of reviews seek to collect and categorize the existing literature so as to identify any gaps.

Rapid Review

Rapid reviews are systematic reviews conducted under a time constraint. Researchers make use of workarounds to complete the review quickly (e.g., only looking at English-language publications), which can lead to a less thorough and more biased review. 

Narrative Review

A traditional literature review that summarizes and synthesizes the findings of numerous original research articles. The purpose and scope of narrative literature reviews vary widely and do not follow a set protocol. Most literature reviews are narrative reviews. 

Umbrella Review

Umbrella reviews are, essentially, systematic reviews of systematic reviews. These compile evidence from multiple review studies into one usable document. 

Grant, Maria J., and Andrew Booth. “A Typology of Reviews: An Analysis of 14 Review Types and Associated Methodologies.” Health Information & Libraries Journal , vol. 26, no. 2, 2009, pp. 91-108. doi: 10.1111/j.1471-1842.2009.00848.x .

Computer Science (UNH Durham): Literature Reviews

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Technical Reports

• Tools & Tutorials

Bibliographic Management Software

Zotero is a free, open source bibliographic management tool that operates as an extension of the Firefox browser.   Zotero allows the collection of citations to any kind of material and automatically formats bibliographies in almost any style.  Zotero also has many search, tagging, and note taking features.  Visit the Zotero quick start guide to learn more. 

• Electronic Colloquium on Computational Complexity Full text collection of reports, papers, and notes searchable by keyword or author. Includes a browsable keyword list.
• National Technical Information Service (NTIS) Collection of citations to reports on government funded research. If you need materials cited on the NTIS site please check WorldCat or talk to your librarian.
• Science.gov Allows searches across many government databases and websites. Content is not limited to technical reports. Often full text of reports is available.
• Virtual Technical Reports Center Links to hundreds of university, government, and project websites containing technical reports and other resources. more... less... Maintained by the University of Maryland Libraries.

Getting Started

The goal of a literature review is to find all the relevant publications on a topic and to then summarize and synthesize that information. A literature review can help you find areas where further research is needed, narrow a research topic, or determine if a thesis question is unique. Talk to your advisor for help defining your research question. For help with library resources, talk to your librarian; they can help you find a combination of resources that will result in a comprehensive search.

Indexes and Databases

• ACM Digital Library This link opens in a new window Provides access to ACM journals, newsletters, and conference proceedings. Includes bibliographic information, abstracts, reviews, and the full text for articles along with selected works published by affiliated organizations. Dates of coverage: 1947-current
• CiteSeerX Indexes computer and information science literature and includes full text of articles and citation statistics. Allows the full text of articles to be searched.
• IEEE Xplore This link opens in a new window A digital library providing full text access to the world's highest quality technical literature in electrical engineering, computer science, and electronics. It contains full text documents from IEEE journals, transactions, magazines, letters, conference proceedings, standards, and IET (Institution of Engineering and Technology) Conferences. UNH no longer has access to IET Journals.
• Web of Science This link opens in a new window Facilitates research-level interdisciplinary search. Use the Basic Search to locate articles in high-impact scholarly journals in science, social science, arts, and humanities. Use the unique Cited Reference search for articles that cite an article you already know of, so you can track citations forward in time.
• INSPEC This link opens in a new window The world's leading resource for coverage of research literature in physics, including astronomy and astrophysics. Its other subject strengths are electrical engineering; control, and computing, including information technology. International journals and conference proceedings are covered, with selected indexing of books and reports. This resource allows searching by specialized fields. Dates of coverage: 1896-current
• Computing Research Repository (CoRR) Archives computer science papers with some coverage back to 1993. Includes full text of all papers. Frequently updated. more... less... Sponsored by ACM, the arXiv.org e-Print archive, NCSTRL (Networked Computer Science Technical Reference Library), and AAAI.
• DBLP Computer Science Bibliography Provides citations to articles in major computer science journals and conference proceedings and in some cases links to full-text versions of articles (look for the words "Electronic Editions.") Search by author or keyword, or browse by journal, conference proceeding, or broad subject area.

Finding Dissertations and Theses

• Dissertations & Theses Global This link opens in a new window Comprehensive collection of full-text dissertations and theses. Official digital dissertations archive for the Library of Congress and considered the database of record for graduate research. Note: Full text for certain publications is subject to market availability. Dates of coverage: 1861-current
• Networked Digital Library of Theses and Dissertations Searches almost 4 million dissertations and theses from around the world. To focus your search, try the "advanced search tips" and use the facets on the left when viewing your search results.
• OpenDOAR Allows searches of the contents of institutional repositories which may contain dissertations that are not available through the Digital Dissertations database. Repositories contents are not limited to dissertations; to limit your search add "dissertation" or "thesis" to your keywords in the search box.
• TEL (thèses-EN-ligne) Part of HAL , this database is a multidisciplinary collection of self-submitted theses and dissertations.

Engineering & Physical Sciences Librarian

Print Indexes

• ACM Guide to Computing Literature by Association for Computing Machinery Call Number: Eng/Math/CS Library QA76 .A8 Index to books, papers, reports, articles in major journals of computing and related fields, conferences and symposia. Available online from 1985 to present at the ACM website. Available only in print from 1977 to 1984.
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• Linnaeus University
• Faculty of Technology

Degree Projects in Computer Science

Literature review.

Senast ändrad 2017-04-20 02:22 av Johan Hagelbäck

What is a literature review?

All degree projects begin with a literature review. In this step, you search for and read relevant articles in your field of study. The purpose is:

• To give an overview of the “big issues” in a field of study
• To summarize other people’s work
• To evaluate other people’s work
• To provide a context for your work
• To identify gaps
• To develop an understanding of theories and methods used in the field of study

The articles you read are then summarized in your report. When summarizing an article, the following questions shall be answered:

• What were the aims and objectives?
• What were the outcomes of the work?
• What approaches/methods/strategy were used?
• In what context was the work conducted?
• What was its contribution to the field of study?
• What connection does it have to the problem I plan to investigate?

After conducting the literature review you have learned what is going on in the field of study. You will learn why the topic is important, who it is important for and how other people approached problems in the field (what methods they used). You will also find out what is different in your project compared to the work of others, and what contribution your project will have to the field of study. This helps you motivate why your project is interesting and define what is new and novel.

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• CAREER FEATURE
• 04 December 2020
• Correction 09 December 2020

How to write a superb literature review

Andy Tay is a freelance writer based in Singapore.

You can also search for this author in PubMed   Google Scholar

Literature reviews are important resources for scientists. They provide historical context for a field while offering opinions on its future trajectory. Creating them can provide inspiration for one’s own research, as well as some practice in writing. But few scientists are trained in how to write a review — or in what constitutes an excellent one. Even picking the appropriate software to use can be an involved decision (see ‘Tools and techniques’). So Nature asked editors and working scientists with well-cited reviews for their tips.

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doi: https://doi.org/10.1038/d41586-020-03422-x

Interviews have been edited for length and clarity.

Updates & Corrections

Correction 09 December 2020 : An earlier version of the tables in this article included some incorrect details about the programs Zotero, Endnote and Manubot. These have now been corrected.

Hsing, I.-M., Xu, Y. & Zhao, W. Electroanalysis 19 , 755–768 (2007).

Article   Google Scholar  

Ledesma, H. A. et al. Nature Nanotechnol. 14 , 645–657 (2019).

Article   PubMed   Google Scholar  

Brahlek, M., Koirala, N., Bansal, N. & Oh, S. Solid State Commun. 215–216 , 54–62 (2015).

Choi, Y. & Lee, S. Y. Nature Rev. Chem . https://doi.org/10.1038/s41570-020-00221-w (2020).

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