advanced bibliometric software tools for publishers and editors

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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

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  • 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

    1

  • 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

    2

  • 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)

    3

  • Bibliographic databases: Big data

    4

    Web of Science Scopus

    Journals 12,000 20,000

    Publications 45 million 35 million

    Citations 1 billion 0.9 billion

  • Bibliometric networks

    5

    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

    6

  • 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

    8

  • 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

    10

  • CitNetExplorer

    11

  • 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

    12

  • 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

    13

    VOSviewer CitNetExplorer

  • VOSviewer

    demo

    14

  • Data

    Journals:

    Journal of the Association for Information Science and

    Technology (JASIST)

    Journal of Informetrics

    Scientometrics

    Period: 2006-2015

    No. of publications: 5,150

    15

  • Term map

    16

  • 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

    17

  • Term map Average publication year

    18

  • Term map Average citation impact

    19

  • Term map Journal of Informetrics

    20

  • Term map - Scientometrics

    21

  • Term map - JASIST

    22

  • Term map - USA

    23

  • Term map - China

    24

  • Term map The Netherlands

    25

  • Co-authorship map of authors

    26

  • Co-citation map of sources

    27

  • Bibliographic map of publications

    28

  • CitNetExplorer

    demo

    29

  • More

    information

    30

  • Do it yourself!

    31

    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

    32

    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

    33

    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

    34

    http://www.cwts.nl/

  • Thank you for your attention!

    35