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CWTS Scientometrics Summer School (CS3)

The fifth CWTS Scientometrics Summer School (2023) will be hybrid, with the option of physical participation in Leiden, the Netherlands. As a leading scientometric research centre, CWTS organizes the summer school to contribute to global doctoral-level training in the field of scientometrics.


Course description

Doctoral students in scientometrics often have various disciplinary backgrounds. As such, it is sometimes difficult to get a coherent overview of scientometrics. The CWTS Scientometrics Summer School is intended to address this. Participants are introduced to methods and techniques that use scientometric data sources, for instance the metadata of scholarly publications. The summer school covers general quantitative methods, including causal inference, network analysis, text analysis and visualization, as well as scientometric methods such as citation analysis and co-authorship analysis. Major scientometric data sources, including OpenAlex, Crossref, Dimensions, Scopus and Web of Science, are discussed, including their strengths and limitations. The summer school turns theoretical ideas into hands-on research by engaging participants with data interactively. Visualization of science plays an important role in the course, with a special focus on the VOSviewer software.

The practical applications of scientometrics will be placed within broader theoretical perspectives. The summer school offers various perspectives on the study of science, provided by guest lecturers. These perspectives touch upon broader questions: How does science progress? How do scholars build on previous knowledge? How is scientific practice influenced by social factors? 

The summer school will be highly relevant to students pursuing a doctoral degree in scientometrics, but also to doctoral students from other fields who want to use scientometric methods in their research. The summer school takes an interactive format and engages students in practical exercises on data collection, analysis and visualization. There will be ample room for bringing your own perspective and questions to the summer school. Dedicated time will be available for student presentations and feedback from lecturers and peers.

The CWTS Scientometrics Summer School is unique in its exclusive focus on doctoral students and other (junior) researchers. Other summer schools and courses in scientometrics, offered both at CWTS and elsewhere, address a mixed audience consisting of both researchers and practitioners. By focusing exclusively on doctoral students and (junior) researchers, the CWTS Scientometrics Summer School is able to provide scientometric education with a strong emphasis on fundamental scientific problems in the field of scientometrics.

The STI 2023 conference will also be organised by CWTS in Leiden, the Netherlands, and we decided to organise the summer school just before the STI 2023 conference. This facilitates joining both the STI conference and the CWTS summer school. We will only use the afternoons (13—17 CET) for the summer school to facilitate online participation.


September 18 – September 26, 2023 (13 – 17h CET), excluding the weekend. 

Deadline for registration

July 15, 2023


  • Online
  • Centre for Science and Technology Studies (CWTS), Leiden University, Leiden, the Netherlands 

Student requirements

  • English proficiency.
  • Master degree (any discipline).
  • Currently following doctoral (PhD) training.
    • Early post-doctoral researchers  (< 3y after PhD)  are also welcome.
  • No specific pre-requisite knowledge.


The summer school will be taught by leading scholars from CWTS. 

  • Rodrigo CostasRodrigo Costas
  • CWTS, Leiden University.
    Rodrigo is senior researcher at CWTS. He focuses on the development of new social media metrics (altmetrics), new scientometric applications at the individual-level and the study of funding acknowledgements.  
  • Nees Jan van EckNees Jan van Eck
  • CWTS, Leiden University.
    Nees Jan is senior researcher at CWTS. He develops tools and algorithms for analyzing and visualizing science, and is the main developer of the VOSviewer software. He is also head of the IT department at CWTS.
  • Vincent TraagVincent Traag
  • CWTS, Leiden University.
    Vincent is senior researcher at CWTS. He is involved in network analysis and modelling the research system and is coordinator of the CWTS Scientometrics Summer School.
  • Ludo Waltman
  • CWTS, Leiden University.
    Ludo is professor of Quantitative Science Studies. In addition, he is co-developer of the VOSviewer software. Ludo also serves as Editor-in-Chief of the journal Quantitative Science Studies

Guest lecturers

The summer school will offer various perspectives on the study of science, provided by guest lecturers (TBD).

Preliminary Program

Week 1

Day 1 Introduction
Day 2 Data sources & data collection
Day 3 Measurement & operationalization
Day 4 Causal inference and statistics
Day 5 Student presentations

Week 2

Day 1 Network analysis & visualization
Day 2 Reproducible workflow 


  • PhD level education.
  • Equivalent of about 3 European Study Credits (≈ 75 hours).


The registration fee is € 300 for online participation and € 450 for participation on-site. When participating on-site, travel and lodging will have to be arranged separately. The maximum number of participants in the summer school is 40, of which 20 online and 20 on-site. Participation will be determined in the order of registration. Participants are expected to bring their own laptop, which is required for some of the practical exercises. 


For more information or questions, please mail to summerschool@cwts.leidenuniv.nl.

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