Centre for Science and Technology Studies Centre for Science and Technology Studies 2333AL Leiden Zuid Holland 31715273909

Vincent Traag, PhD

Vincent Traag is a senior researcher at the Centre for Science and Technology Studies (CWTS) of Leiden University in the Netherlands. He leads the research line on modelling the research system within the Quantitative Science Studies (QSS) research group. His main interests are mathematical models in the social sciences with a focus on (social) networks. In addition to his scientific research, Traag also acts as a bibliometric consultant at the CWTS.

Traag obtained his Master in sociology (cum laude) from the University of Amsterdam (2008). Coming from a computer science background, and taking up mathematics during his studies in sociology, he went on to obtain a PhD in applied mathematics in Louvain-la-Neuve, Belgium (2013). During his PhD he studied methods for detecting communities in complex networks, resulting in a Python software package. In addition, he applied this methodology in several fields across the (social) sciences, ranging from citation networks to international relations. He joined the CWTS in 2015.

More information can be found on his personal website.



Journal publications (17)

  • Traag, V.A., & Waltman, L. (2019). Systematic analysis of agreement between metrics and peer review in the UK REF, e29. Palgrave Communications, 5. (paper)
  • Traag, V.A., Waltman, L., & Van Eck, N.J. (2019). From Louvain to Leiden: guaranteeing well-connected communities, e5233. Scientific Reports, 9. (paper)
  • Traag, V.A., Quax, R., & Sloot, P.M.A. (2017). Modelling the distance impedance of protest attendance. Physica A, 468, 171-182. (paper)
  • Waltman, L., & Traag, V.A. (2017). Impact factors: Is the Nature Index at odds with DORA? (Correspondence). Nature, 545(7655), 412-412. (paper)
  • Traag, V.A. (2016). Complex Contagion of Campaign Donations. PLoS ONE, 11(4), e0153539. (paper)
  • Uitermark, J., Traag, V.A., & Bruggeman, J. (2016). Dissecting discursive contention: A relational analysis of the Dutch debate on minority integration, 1990-2006. Social Networks, 47, 107-115. (paper)
  • Hicks, J., Traag, V.A., & Reinanda, R. (2015). Turning Digitised Newspapers into Networks of Political Elites. Asian Journal of Social Science, 43(5), 567-587. doi:10.1163/15685314-04305004 (paper)
  • Traag, V.A. (2015). Faster unfolding of communities: Speeding up the Louvain algorithm. Physical Review E, 92(3), 032801. doi:10.1103/PhysRevE.92.032801 (paper)
  • Traag, V.A., Aldecoa, R., & Delvenne, J.C. (2015). Detecting communities using asymptotical surprise. Physical Review E, 92(2), e022816. doi:10.1103/PhysRevE.92.022816 (paper)
  • Traag, V.A., Reinanda, R., & Van Klinken, G. (2015). Elite Co-Occurrence in the Media. Asian Journal of Social Science, 43(5), 588-612. doi:10.1163/15685314-04305005 (paper)
  • Csaji, B.C., Browet, A., Traag, V.A., Delvenne, J.C., Huens, E., Van Dooren, P., Smoreda, Z., & Blondel, V.D. (2013). Exploring the mobility of mobile phone users. Physica A, 392(6), 1459-1473. doi:10.1016/j.physa.2012.11.040 (paper)
  • Lupu, & Traag, V.A. (2013). Trading Communities, the Networked Structure of International Relations, and the Kantian Peace. Journal of Conflict Resolution, 57(6), 1011-1042. (paper)
  • Traag, V.A., Kriegsman, L., & Van Dooren, P. (2013). Significant Scales in Community Structure, 3. Scientific Reports, 2930. doi:10.1038/srep02930 (paper)
  • Traag, V.A., Van Dooren, P., & De Leenheer, P. (2013). Dynamical models explaining social balance and evolution of cooperation. PLoS ONE, 8(4), e60063. doi:10.1371/journal.pone.0060063 (paper)
  • Bruggeman, J., Traag, V.A., & Uitermark, J. (2012). Detecting Communities through Network Data. American Sociological Review, 77(6), 1050-1063. doi:10.1177/0003122412463574 (paper)
  • Traag, V.A., & Van Dooren, P. (2011). Narrow scope for resolution-limit-free community detection. Physical Review E, 84(1), 016114. doi:10.1103/PhysRevE.84.016114 (paper)
  • Traag, V.A., & Bruggeman, J. (2009). Community detection in networks with positive and negative links. Physical Review E, 80(3), 036115. doi:10.1103/PhysRevE.80.036115 (paper)

Conference publications (1)

  • Subelj, L., Waltman, L., Traag, V.A., & Van Eck, N.J. (2019). Intermediacy of publications. In Proceedings of the 17th International Conference of the International Society for Scientometrics and Informetrics (pp. 1288-1300).

Book chapters (1)

  • Traag, V.A., Reinanda, R., & Van Klinken, G. (2016). Structure of a Media Co-occurrence Network. Springer Proceedings in Complexity. In S. Battiston, F. De Pellegrini, G. Caldarelli, & E. Merelli (Eds.), Proceedings of 2014 European Conference on Complex Systems (pp. 81-91). doi:10.1007/978-3-319-29228-1_8 (paper)

Senior researcher and bibliometric consultant

T: +31 71 527 3943

E: v.a.traag@cwts.leidenuniv.nl

W: www.traag.net

ORCID: 0000-0003-3170-3879

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