+254 786 524680

Bibliometric Analysis using VOSViewer

About VOSviewer

VOSviewer is a software tool for constructing and visualizing bibliometric networks. These networks may for instance include journals, researchers, or individual publications, and they can be constructed based on citation, bibliographic coupling, co-citation, or co-authorship relations. VOSviewer also offers text mining functionality that can be used to construct and visualize co-occurrence networks of important terms extracted from a body of scientific literature.

Download VOSviewer from https://www.vosviewer.com/

Obtaining Content from Databases

Scopus – CSV – most options for analysis (co-authorship, co-occurrence, citation, co-citation, bibliographic coupling)

  • search by topic or desired publications
  • select citations and click export – select CSV
  • limited to 2000 articles
  • include
    • Citation information
    • Affiliations
    • Abstract and keywords
    • Include references

Scopus – RIS – limited to author and co-occurrence (keyword)

  • search by topic or desired publications
  • select citations and click export – select RIS
  • limited to 2000 articles
  • include
    • citation
    • abstract

Web of Sciences – plain text (txt) – most options for analysis (co-authorship, co-occurrence, citation, co-citation, bibliographic coupling)

  • search by topic or desired publications
  • select citations and click export – select plain text
  • limited to 500 articles
  • include records from 1 to ???
  • Record content – Full Record and Cited References

Web of Science – RIS – limited to author and co-occurrence (keyword)

  • search by topic or desired publications
  • select citations and click export – select RIS
  • limited to 1000 articles
  • include records from 1 to ???
  • Record content – Author, Title, Source, Abstract

Bibliometric Analysis using VOSViewer

Create a map based on bibliographic data

Export in CSV format (Scopus) or TXT (Web of Science)

  • Choose this option to create a co-authorship, keyword co-occurrence, citation, bibliographic coupling, or co-citation map based on bibliographic data  — click next
  • Choose data source – select Read data from bibliographic database files  — click next
  • Select files – click on tab of database source and select file from computer (.csv) – click next
  • Click Co-authorship and Full counting  & Unit of analysis (Authors, Organization, Countries) and – click next
  • Choose threshold – make choice — click next
  • Choose number of authors – make choice – click next
  • Verify selected authors
    • Before clicking finish, right click on the table (if you are using a PC), and click export selected authors.
      • you can use this table to create a thesaurus to clean up names.  (i.e. same author but name variations) or exclude names
    • Click Finish

Export in RIS format

  • Choose this option to create a co-authorship or keyword co-occurrence– click next
  • Choose data source – select Read data from reference manager files  — click next
  • Under RIS tab, select file from computer – click next
  • Click Co-authorship (or co-occurrence) and Full counting – change other setting you would like – click next
  • Choose threshold – make choice — click next
  • Choose number of authors – make choice – click next
  • Verify selected authors (or keywords)
    • Before clicking finish, right click on the table (if you are using a PC), and click export selected authors.
      • you can use this table to create a thesaurus to clean up names.  (i.e. same author but name variations) or exclude names
    • Click Finish

Create a map based on text data

  • Choose this option to create a term co-occurrence map based on text data – click next
  • Choose data source – select Read data from a bibliographic databases (Scopus – CSV; WOS -txt) or read data from reference manager files (RIS) — click next
  • Choose fields – Title and abstract fields, Title field  or abstract field)- click next   (if download included abstracts – abstract & title will be an option)
  • Choose counting method – choose binary or full – click next
  • Choose threshold – make choice — click next
  • Choose number of terms – make choice – click next
  • Verify selected terms
    • Before clicking finish, right click on the table (if you are using a PC), and click export selected terms.
      • you can use this table to create a thesaurus to clean up terms.  (i.e. same author but name variations) or exclude names
    • Click Finish

Create a Thesaurus

A thesaurus can be created to remove “stop” words or to standardize terms or names or affiliations

A thesaurus must be in a plain .txt table format

  • by putting an alternative term in the replace by column the system will replace the label term with the replace by term
  • by leaving replace by blank, the system will replace the label with a blank, removing the term from analysis (stop word)
label replace by
design
adult
organization association
article
dental caries dental cavity
dental cavities dental cavity

 

Definitions

  • Co-authorship – authors writing in the same network, whether directly or indirectly
  • Co-occurrence – Keyword co-occurrence
  • Citation – which article cites another article (or which authors of the articles cites authors of author articles)
  • Co-citation – Two publications are co-cited if there is a third publication
  • that cites both publications (Marshakova, 1973; Small, 1973). The larger the number of publications by which two publications are co-cited, the stronger the co-citation relation between the two publications. (3rd pub newer)
  • Bibliographic coupling is the opposite of co-citation. Two publications are bibliographically coupled if there is a third publication that is cited by both publications (Kessler, 1963). In other words, bibliographic coupling is about the overlap in the reference lists of publications. (3rd pub older)
Data Analytics Services
Need Our Services?
Econometrics & Statistics Modelling Services
Need Help, Whatsapp Us Now