Advanced bibliometric software

tools for publishers and editors

Nees Jan van Eck

Centre for Science and Technology Studies (CWTS), Leiden University

Training course on Big data and academic publication

National Science Library, CAS, Beijing, China, June 22, 2016

About myself (1)

Master in computer science

PhD thesis on bibliometric

mapping of science

Researcher at CWTS since 2009

Bibliometric network analysis and

visualization

Bibliometric indicators of research

performance

Head of ICT

Board member

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About myself (2)

Editorial board member of

Journal of the Association for Information Science and Technology

Journal of Data and Information Science

Journal of Informetrics

Scientometrics

Editor brief communications JASIST

Board member ISSI

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Centre for Science and Technology

Studies (CWTS)

Research center at Leiden University

focusing on science and technology

studies

About 30 staff members

History of more than 25 years in

bibliometric and scientometric

research

Contract research

Full access to large bibliographic

database (Web of Science and

Scopus)

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Bibliographic databases: Big data

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Web of Science Scopus

Journals 12,000 20,000

Publications 45 million 35 million

Citations 1 billion 0.9 billion

Bibliometric networks

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Web of

Science

Scopus

Citation network

of pubs / authors / journals

Co-authorship network

of authors / organizations

Co-citation network

of pubs / authors / journals

Co-occurrence network

of keywords / terms

Bibliographic coupling network

of pubs / authors / journals

Bibliographic

database

Software tools

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Software tools

VOSviewer (www.vosviewer.com)

Tool for constructing and visualizing bibliometric networks

CitNetExplorer (www.citnetexplorer.nl)

Tool for visualizing and analyzing citation networks of

publications

Both tools have been developed together

with my colleague Ludo Waltman 7

http://www.vosviewer.com/http://www.citnetexplorer.nl/

VOSviewer

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VOSviewer

Software tool for visualizing (bibliometric) networks

Built-in support for popular bibliographic databases Web of Science

Scopus

PubMed

RIS files

Text mining functionality

Layout and clustering techniques

Advanced visualization features: Smart labeling algorithm

Overlay visualizations

Density visualizations (heat map)

Users: Researchers

Professional users (e.g., universities, libraries, funders, publishers) 9

Increasing use of VOSviewer in

scientific publications

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CitNetExplorer

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Why use CitNetExplorer?

To analyze the structure and development of a

research field

Example: Identifying the main topics in the field of

scientometrics and tracing the developments within each topic

To delineate a research area

Example: Delineating the literature on science mapping

To study publication oeuvres

Example: Identifying the publications of a researcher and

analyzing the influence of cited and citing publications

To support literature reviewing

Example: Reviewing the literature on the h-index

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Any type of bibliometric

network

Co-authorship, direct citations,

co-citation, and bibliographic

coupling

Time dimension is ignored

Networks of at most ~10,000

nodes are supported

Only citation networks of

publications

Direct citation between

publications

Time dimension is explicitly

considered

Millions of publications are

supported

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VOSviewer CitNetExplorer

VOSviewer

demo

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Data

Journals:

Journal of the Association for Information Science and

Technology (JASIST)

Journal of Informetrics

Scientometrics

Period: 2006-2015

No. of publications: 5,150

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Term map

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Interpretation of a term map

Size:

The larger a term, the higher the frequency of occurrence of the

term

Distance:

In general, the smaller the distance between two terms, the

higher the relatedness of the terms, as measured by co-

occurrences

The horizontal and vertical axes have no special meaning; maps

can be freely rotated and flipped

Colors:

Colors indicate clusters of closely related terms

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Term map Average publication year

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Term map Average citation impact

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Term map Journal of Informetrics

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Term map - Scientometrics

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Term map - JASIST

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Term map - USA

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Term map - China

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Term map The Netherlands

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Co-authorship map of authors

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Co-citation map of sources

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Bibliographic map of publications

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CitNetExplorer

demo

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More

information

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Do it yourself!

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www.vosviewer.com www.citnetexplorer.nl

http://www.vosviewer.com/http://www.citnetexplorer.nl/

Publications on VOSviewer

Van Eck, N.J., & Waltman, L. (2014). Visualizing bibliometric networks. In Y.

Ding, R. Rousseau, & D. Wolfram (Eds.), Measuring scholarly impact: Methods

and practice (pp. 285-320). Springer. 10.1007/978-3-319-10377-8_13

Van Eck, N.J., & Waltman, L. (2010). Software survey: VOSviewer, a computer

program for bibliometric mapping. Scientometrics, 84(2), 523-538.

10.1007/s11192-009-0146-3

Waltman, L., Van Eck, N.J., & Noyons, E.C.M. (2010). A unified approach to

mapping and clustering of bibliometric networks. Journal of Informetrics,

4(4), 629-635. 10.1016/j.joi.2010.07.002

Van Eck, N.J., Waltman, L., Dekker, R., & Van den Berg, J. (2010). A

comparison of two techniques for bibliometric mapping: Multidimensional

scaling and VOS. JASIST, 61(12), 2405-2416. 10.1002/asi.21421

Waltman, L., & Van Eck, N.J. (2013). A smart local moving algorithm for large-

scale modularity-based community detection. European Physical Journal B,

86(11), 471. 10.1140/epjb/e2013-40829-0

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http://dx.doi.org/10.1007/978-3-319-10377-8_13http://dx.doi.org/10.1007/s11192-009-0146-3http://dx.doi.org/10.1016/j.joi.2010.07.002http://dx.doi.org/10.1002/asi.21421http://dx.doi.org/10.1140/epjb/e2013-40829-0

Publications on CitNetExplorer

Van Eck, N.J., & Waltman, L. (2014). CitNetExplorer: A new software tool for

analyzing and visualizing citation networks. Journal of Informetrics, 8(4),

802-823. 10.1016/j.joi.2014.07.006

Van Eck, N.J., & Waltman, L. (2014). Systematic retrieval of scientific literature

based on citation relations: Introducing the CitNetExplorer tool. In

Proceedings of the First Workshop on Bibliometric-enhanced Information

Retrieval (BIR 2014), pages 13-20. ceur-ws.org/Vol-1143/paper2.pdf

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http://dx.doi.org/10.1016/j.joi.2014.07.006http://ceur-ws.org/Vol-1143/paper2.pdf

Course: Bibliometric Network Analysis

and Science Mapping Using VOSviewer

April 6-7, 2017

Leiden University, The Netherlands

Participants are introduced into the main

techniques for bibliometric network analysis and

science mapping

Special attention is paid to applications in a

research evaluation and science policy context

www.cwts.nl

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http://www.cwts.nl/

Thank you for your attention!

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