Nees Jan van Eck
Senior researcher
- Name
- Dr. N.J.P. van Eck
- Telephone
- +31 71 527 6445
- ecknjpvan@cwts.leidenuniv.nl
- ORCID iD
- 0000-0001-8448-4521
Senior researcher, head of ICT, and coordinator of the Information & Openness focal area. Nees Jan's research focuses on infrastructures and the devepment of tools and algorithms to support research assessment, science policy, and scholarly communication.
More information about Nees Jan van Eck
Nees Jan van Eck is senior researcher at the Centre for Science and Technology Studies (CWTS) at Leiden University in the Netherlands. He is doing research in the field of bibliometrics and scientometrics. His research focuses on the development of visualization tools and algorithms, mainly for analyzing the structure and development of science. Nees Jan is the main developer of VOSviewer and CitNetExplorer, two well-known software tools for visualizing bibliometric data. The VOSviewer software is frequently used in bibliometric studies. More than 20,000 publications have appeared in international scientific journals in which the software is employed. In addition to his work on bibliometric visualization, Nees Jan also focuses on the study of bibliometric data sources and the analysis of the full text of scientific publications. Nees Jan has published more than 80 publications. He is editor brief communications of the Journal of the Association for Information Science and Technology, he serves in the editorial boards of Journal of Data and Information Science and Quantitative Science Studies, and he served as an elected board member of the International Society for Informetrics and Scientometrics between 2015 and 2023. Nees Jan has been involved in various commercial bibliometric research projects and training courses in which the VOSviewer software plays a key role. He is also coordinator of the Information & Openness focal area of CWTS and the head of ICT of CWTS, making him responsible for the entire data infrastructure of the center.
See also Nees Jan's personal website: www.neesjanvaneck.nl.
Senior researcher
- Faculteit der Sociale Wetenschappen
- CWTS
- Bascur J., Verberne S., Eck N. van & Waltman L. (2023), Academic information retrieval using citation clusters: in-depth evaluation based on systematic reviews, Scientometrics 128: 2895-2921.
- Palmblad M., Eck N.J. van & Bergquist J. (2023), Capillary electrophoresis - A bibliometric analysis, Trends in Analytical Chemistry 159: 116899.
- Lamers W.S., Boyack K., Larivière V., Sugimoto C.R., Eck N.J.P. van, Waltman L.R. & Murray D. (19 January 2022), A first step in quantifying disagreement across science. Leiden Madtrics. [blog entry].
- Mugabushaka A.M., Eck N.J. van & Waltman L. (2022), Funding COVID-19 research: insights from an exploratory analysis using open data infrastructures, Quantitative Science Studies 3(3): 560-582.
- Eck N.J. van & Waltman L. (2022), Crossref as a source of open bibliographic metadata. MetaArXiv. [working paper].
- Lin G., Eck N.J.P. van, Hou H. & Hu Z. (2022), The changing role of cited papers over time: an analysis of highly cited papers based on a large full text dataset. In: Proceedings of the 26th international conference on science, technology and innovation indicators..
- Lamers W.S., Boyack K.W., Larivière V.G., Sugimoto C.R., Eck N.J.P. van, Waltman L.R. & Murray D.S. (19 January 2022), A first step in quantifying disagreement across science. Leiden Madtrics. Leiden: Leiden University. [blog entry].
- Mugabushaka A.-M., Eck N.J.P. van & Waltman L.R (25 February 2022), Funding Covid-19 research: insights from an open data infrastructure. Upstream. [blog entry].
- Eck N.J.P. van & Waltman L.R. (6 July 2022), The growth of open peer review. Leiden Madtrics . Leiden: Leiden University. [blog entry].
- Colavizza G., Costas Comesana R., Traag V.A., Eck N.J.P. van, Leeuwen T.N. van & Waltman L.R. (2021), A scientometric overview of CORD-19, PLoS ONE 16(1): e0244839.
- Lamers W.S., Boyack K., Larivière V., Sugimoto C.R., Eck N.J.P. van, Waltman L.R. & Murray D. (2021), Meta-Research: investigating disagreement in the scientific literature, eLife 10: e72737.
- Visser M.S., Eck N.J.P. van & Waltman L.R. (2021), Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic, Quantitative Science Studies 2(1): 20-41.
- Lamers W.S., Eck N.J.P. van & Colavizza G. (2021), An appraisal of publication embedding techniques in the context of conventional bibliometric relatedness measures. In: Proceedings of the 18th international conference of the international society for scientometrics and informetrics.. 633-638.
- Eck N.J.P. van & Waltman L.R. (2021), Crossref as a source of open bibliographic metadata. In: Glänzel W., Heeffer S., Chi P.-S. & Rousseau R. (Eds.) Proceedings of the 18th international conference of the international society for scientometrics and informetrics.. 1169-1174.
- Waaijers L.J.M., Waltman L.R., Vries S.C.J. de, Leeuwen T.N. van & Eck N.J.P van (2 March 2021), Bona Fide Journals: creating a predatory-free academic publishing environment. Leiden Madtrics. [blog entry].
- Eck N.J. van & Waltman L.R. (22 July 2021), VOSviewer goes online! (Part 2). Leiden Madtrics. [blog entry].
- Eck N.J. van & Waltman L.R. (16 July 2021), VOSviewer goes online! (Part 1). Leiden Madtrics. [blog entry].
- Donner P., Rimmert C. & Eck N.J. van (2020), Comparing institutional-level bibliometric research performance indicator values based on different affiliation disambiguation systems, Quantitative Science Studies 1(1): 150-170.
- Ahlgren P., Chen Y., Colliander C. & Eck N.J.P. van (2020), Enhancing direct citations: a comparison of relatedness measures for community detection in a large set of PubMed publications, Quantitative Science Studies 1(2): 714-729.
- D'Angelo C.A. & Eck N.J. van (2020), Collecting large-scale publication data at the level of individual researchers: A practical proposal for author name disambiguation, Scientometrics 123(2): 883-907.
- Subelj L., Waltman L., Traag V. & Eck N.J. van (2020), Intermediacy of publications, Royal Society Open Science 7(1): 190207.
- Waltman L., Boyack K.W., Colavizza G. & Eck N.J. van (2020), A principled methodology for comparing relatedness measures for clustering publications, Quantitative Science Studies 1(2): 691-713.
- Bascur Cifuentes J.P., Verberne S., Eck N.J.P. & Waltman L.R. (2020), Browsing citation clusters for academic literature search: a simulation study with systematic reviews. Cabanac G., Frommholz I. & Mayr P. (Eds.), Proceedings of the 10th International Workshop on Bibliometric-enhanced Information Retrieval. 10th International Workshop on Bibliometric-enhanced Information Retrieval co-located with 42nd European Conference on Information Retrieval (ECIR 2020) 14 April 2020 - 14 April 2020 no. 2591: CEUR-WS.org. 53-65.
- Traag V.A., Waltman L. & Van Eck N.J. (2019), From Louvain to Leiden: guaranteeing well-connected communities, Scientific Reports 9: e5233.
- Siegle G.J., Cramer A.O.J., Van Eck N.J., Spinhoven P., Hollon S.D., Ormel J., Strege M. & Bockting C.L.H. (2019), Where are the breaks in translation from theory to clinical practice (and back) in addressing depression? An empirical graph-theoretic approach, Psychological Medicine 49(16): 2681-2691.
- Waltman L. & Van Eck N.J. (2019), Field normalization of scientometric indicators. In: Glänzel W., Moed H.F., Schmoch U. & Thelwall M. (Eds.), Springer Handbook of Science and Technology Indicators. Cham: Springer. 281-300.
- Bascur J.P., Van Eck N.J. & Waltman L. (2019), An interactive visual tool for scientific literature search: Proposal and algorithmic specification. Cabanac G., Frommholz I. & Mayr P. (Eds.), Proceedings of the 8th International Workshop on Bibliometric-enhanced Information Retrieval. 8th International Workshop on Bibliometric-enhanced Information Retrieval 14 April 2019 - 14 April 2019: CEUR Workshop Proceedings. 76-87.
- Murray D., Lamers W., Boyack K.W., Larivière V., Sugimoto C., Van Eck N.J. & Waltman L. (2019), Measuring disagreement in science, Proceedings of the 17th International Conference of the International Society for Scientometrics and Informetrics. 17th International Conference on Scientometrics and Informetrics 2 September 2019 - 5 September 2019 2370-2375.
- Visser M., Van Eck N.J. & Waltman L. (2019), Large-scale comparison of bibliographic data sources: Web of Science, Scopus, Dimensions, and Crossref, Proceedings of the 17th International Conference of the International Society for Scientometrics and Informetrics. 17th International Conference on Scientometrics and Informetrics 2 September 2019 - 5 September 2019 2358-2369.
- Lamers W.S., Van Eck N.J. & Waltman L. (2019), Variations in citation practices across the scientific landscape: Analysis based on a large full-text corpus, Proceedings of the 17th International Conference of the International Society for Scientometrics and Informetrics. 17th International Conference on Scientometrics and Informetrics 2 September 2019 - 5 September 2019 2121-2132.
- Ahlgren P., Chen Y., Colliander C. & Van Eck N.J. (2019), Community detection using citation relations and textual similarities in a large set of PubMed publications, Proceedings of the 17th International Conference on Scientometrics @ Informetrics, 2-5 September 2019, Sapienza University Rome. 17th International Conference on Scientometrics & Informetrics 2 September 2019 - 5 September 2019 1380-1391.
- Subelj L., Waltman L., Traag V.A. & Van Eck N.J. (2019), Intermediacy of publications, Proceedings of the 17th International Conference of the International Society for Scientometrics and Informetrics. 17th International Conference on Scientometrics and Informetrics 2 September 2019 - 5 September 2019 1288-1300.
- Donner P., Rimmert C. & Van Eck N.J. (2019), Comparing institutional-level bibliometric indicator values based on different affiliation disambiguation systems. Benchmarking Web of Science and Scopus platform tools against a gold-standard data set for Germany, Proceedings of the 17th International Conference of the International Society for Scientometrics and Informetrics. 17th International Conference on Scientometrics & Informetrics 2 September 2019 - 5 September 2019 306-315.
- Colavizza G., Boyack K.W., Eck N.J. van & Waltman L. (2018), The Closer the Better: Similarity of publication pairs at different co-citation levels, Journal of the Association for Information Science and Technology 69(4): 600-609.
- Boyack K.W., Eck N.J. van, Colavizza G. & Waltman L. (2018), Characterizing in-text citations in scientific articles: A large-scale analysis, Journal of Informetrics 12(1): 59-73.
- Zahedi Z. & Van Eck N.J.P. (2018), Exploring topics of interest of Mendeley users, Journal of Altmetrics 1(1): 5.
- Palmblad M. & Van Eck N.J.P. (2018), Bibliometric analyses reveal patterns of collaboration between ASMS members, Journal of The American Society for Mass Spectrometry 29(3): 447-454.
- Flis I. & Eck N.J. van (2018), Framing psychology as a discipline (1950-1999): A large-scale term co-occurrence analysis of scientific literature in psychology, History of Psychology 21(4): 334-362.
- Mahieu R., Van Eck N.J.P., Van Putten D. & Van den Hoven J. (2018), From dignity to security protocols: A scientometric analysis of digital ethics, Ethics and Information Technology 20(3): 175-187.
- Eck N.J. van & Waltman L. (2018), Analyzing the activities of visitors of the Leiden Ranking website, Journal of Data and Information Science 3(3): 81-98.
- Van Eck N.J. & Waltman L. (2018), Analyzing the activities of visitors of the Leiden Ranking website, Proceedings of the 23rd International Conference on Science and Technology Indicators. 23rd International Conference on Science and Technology Indicators 12 September 2018 - 14 September 2018. Leiden: 23rd International Conference on Science and Technology Indicators. 857-867.
- Luwel M., Van Eck N.J. & Van Leeuwen T. (2018), The Schön case: Analyzing in-text citations to papers before and after retraction, Proceedings of the 23rd International Conference on Science and Technology Indicators. 23rd International Conference on Science and Technology Indicators 12 September 2018 - 14 September 2018. Leiden: 23rd International Conference on Science and Technology Indicators. 1025-1030.
- Ranjbar-Sahraei B. & Van Eck N.J. (2018), Accuracy of affiliation information in Microsoft Academic: Implications for institutional level research evaluation, Proceedings of the 23rd International Conference on Science and Technology Indicators. 23rd International Conference on Science and Technology Indicators 12 September 2018 - 14 September 2018. Leiden: 23rd International Conference on Science and Technology Indicators. 1065-1067.
- Lamers W.S., Eck N.J.P. van, Waltman L.R. & Hoos H.H. (2018), Patterns in citation context: The case of the field of scientometrics, Proceedings of the 23rd International Conference on Science and Technology Indicators. 23rd International Conference on Science and Technology Indicators 12 September 2018 - 14 September 2018 1114-1122.
- Van Eck N.J.P. & Waltman L.R. (2017), Citation-based clustering of publications using CitNetExplorer and VOSviewer, Scientometrics 111(2): 1053-1070.
- Boyack K., Glänzel W., Gläser J., Havemann F., Scharnhorst A., Thijs B., Van Eck N.J., Van Velden T. & Waltman L.R. (2017), Topic identification challenge, Scientometrics 111(2): 1223-1224.
- Colavizza G., Boyack K.W., Van Eck N.J. & Waltman L. (2017), Exploring the similarity of articles co-cited at different levels. 16th International Conference of the International Society for Scientometrics and Informetrics, Wuhan, Proceedings of the 16th International Conference of the International Society for Scientometrics and Informetrics. 16th International Conference of the International Society for Scientometrics and Informetrics 16 October 2017 - 20 October 2017 549-560.
- Waltman L., Boyack K.W., Colavizza G. & Van Eck N.J. (2017), A principled methodology for comparing relatedness measures for clustering publications. 16th International Conference of the International Society for Scientometrics and Informetrics, Wuhan, Proceedings of the 16th International Conference of the International Society for Scientometrics and Informetrics. 16th International Conference of the International Society for Scientometrics and Informetrics 16 October 2017 - 20 October 2017 691-702.
- Boyack K.W., Van Eck N.J., Colavizza G. & Waltman L. (2017), Reference behavior in the full text of scientific articles: A large-scale analysis, Proceedings of the 16th International Conference of the International Society for Scientometrics and Informetrics. 16th International Conference of the International Society for Scientometrics and Informetrics 16 October 2017 - 20 October 2017 787-798.
- Van Eck N.J. & Waltman L. (2017), Accuracy of citation data in Web of Science and Scopus. 16th International Conference of the International Society for Scientometrics and Informetrics, Wuhan, Proceedings of the 16th International Conference of the International Society for Scientometrics and Informetrics. 16th International Conference of the International Society for Scientometrics and Informetrics 16 October 2017 - 20 October 2017 1087-1092.
- Van Eck N.J. & Waltman L. (2017), Using full-text data to create improved term maps. 16th International Conference of the International Society for Scientometrics and Informetrics, Wuhan, Proceedings of the 16th International Conference of the International Society for Scientometrics and Informetrics. 16th International Conference of the International Society for Scientometrics and Informetrics 16 October 2017 - 20 October 2017 1136-1141.
- Waltman L., Van Eck N.J., Visser M. & Wouters P. (2016), The elephant in the room: The problem of quantifying productivity in evaluative scientometrics, Journal of Informetrics 10(2): 671-674.
- Perianes-Rodriguez A., Waltman L. & Van Eck N.J. (2016), Constructing bibliometric networks: A comparison between full and fractional counting, Journal of Informetrics 10(4): 1178-1195.
- Waltman L. & Van Eck N.J.P. (2016), The need for contextualized scientometric analysis: An opinion paper, Proceedings of the 21th International Conference on Science and Technology Indicators. STI Conference, 21st Int. Conf. on Science and Technology Indicators 14 September 2016 - 16 September 2016. Proceedings of the 21th International Conference on Science and Technology Indicators 541-549.
- Olensky M., Schmidt M. & Van Eck N.J. (2016), Evaluation of the Citation Matching Algorithms of CWTS and iFQ in Comparison to the Web of Science, Journal of the Association for Information Science and Technology (JASIST) 67(10): 2550-2564.
- Subelj L., Van Eck N.J. & Waltman L. (2016), Clustering scientific publications based on citation relations: A systematic comparison of different methods, PLoS ONE 11(4): e0154404.
- Waltman L. & Van Eck N.J. (2015), Field-normalized citation impact indicators and the choice of an appropriate counting method, Proceedings of the 15th International Conference of the International Society for Scientometrics and Informetrics. 15th International Conference on Scientometrics and Informetrics (ISSI), 29 Jun-4 July, 2015, Bogazici University, Istanbul (Turkey) 29 June 2015 - 4 July 2015 328-339.
- Waltman L. & Van Eck N.J. (2015), Field-normalized citation impact indicators and the choice of an appropriate counting method, Journal of Informetrics 9(4): 872-894.
- Zahedi Z. & Van Eck N.J. (2015), Identifying topics of interest of Mendeley users using the text mining and overlay visualization functionality of VOSviewer, Proceedings of the 20th International Conference on Science and Technology Indicators. 20th International Conference in Science & Technology Indicators, 2-4, September, 2015, Lugano, Switzerland. 2 September 2015 - 4 September 2015.
- Rodrigues S.P., Van Eck N.J., Waltman L. & Jansen F.W. (2014), Mapping patient safety: A large-scale literature review using bibliometric visualisation techniques, BMJ Open 4(3): e004468.
- Rizzi F., Van Eck N.J.P. & Frey M. (2014), The production of scientific knowledge on renewable energies: Worldwide trends, dynamics and challenges and implications for management, Renewable Energy 62: 657-671.
- Van Eck N.J. & Waltman L. (2014), Visualizing bibliometric networks. In: Ding Y., Rousseau R. & Wolfram D. (Eds.), Measuring scholarly impact: Springer International Publishing. 285-320.
- Van Eck N.J.P. & Waltman L. (2014), CitNetExplorer: A new software tool for analyzing and visualizing citation networks, Proceedings of the 19th International Conference on Science and Technology Indicators. 181-192.
- Zahedi Z. & Van Eck N.J. (2014), Visualizing readership activity of Mendeley users using VOSviewer, altmetrics14: expanding impacts and metrics - An ACM Web Science Conference 2014 Altmetrics Workshop. altmetrics14: expanding impacts and metrics An ACM Web Science Conference 2014 Altmetrics Workshop, 23-26 June, Indiana University, Indiana, USA 23 June 2014 - 26 June 2014.
- Caron E. & Van Eck N.J. (2014), Large scale author name disambiguation using rule-based scoring and clustering, Proceedings of the 19th International Conference on Science and Technology Indicators. 19th International Conference on Science and Technology Indicators 3 September 2014 - 5 September 2015 79-86.
- Van Eck N.J.P. & Waltman L. (2014), CitNetExplorer: A new software tool for analyzing and visualizing citation networks no. CWTS-WP-2014-002. Leiden: Centre for Science and Technology Studies.
- 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.
- Waltman L. & Van Eck N.J. (2013), A systematic empirical comparison of different approaches for normalizing citation impact indicators, Journal of Informetrics 7(4): 833-849.
- Waltman L., Van Eck N.J., Van Leeuwen T.N. & Visser M.S. (2013), Some modifications to the SNIP journal impact indicator, Journal of Informetrics 7(2): 272-285.
- Waltman L., Van Eck N.J. & Wouters P. (2013), Counting publications and citations: Is more always better?, Journal of Informetrics 7(3): 635-641.
- Van Eck N.J., Waltman L., Van Raan A.F.J., Klautz R.J.M. & Peul W.C. (2013), Citation analysis may severely underestimate the impact of clinical research as compared to basic research, PLoS ONE 8(4): e62395.
- Waltman L. & Van Eck N.J. (2013), A smart local moving algorithm for large-scale modularity-based community detection, The European Physical Journal B 86(11): e471.
- Soni A., Van Eck N.J.P. & Kaymak U. (2013), Predicting stock price movements from concept map information. In: Thomaidis N.S. & Dash G.H. (Eds.), Recent Advances in Computational Finance: Nova Science Publishers. 173-186.
- Waltman L. & Van Eck N.J. (2013), A systematic empirical comparison of different approaches for normalizing citation impact indicators. 14th International Conference of the International Society for Scientometrics and Informetrics, Vienna , Proceedings of the 14th International Conference of the International Society for Scientometrics and Informetrics. 14th International Conference of the International Society for Scientometrics and Informetrics 15 July 2013 - 19 July 2013 1649-1664.
- Waltman L., Wouters P.F. & Van Eck N.J. (2013), Counting publications and citations: Is more always better? 14th International Conference of the International Society for Scientometrics and Informetrics, Vienna, Proceedings of the 14th International Conference of the International Society for Scientometrics and Informetrics. 14th International Society of Scientometrics and Informetrics Conference 15 July 2013 - 19 July 2013 455-467.
- Waltman L.R. & Van Eck N.J.P. (2013), A systematic empirical comparison of different approaches for normalizing citation impact indicators: Centre for Science and Technology Studies.
- Waltman L.R., Van Eck N.J.P. & Wouters P. (2013), Counting publications and citations: Is more always better?: Centre for Science and Technology Studies.
- Waltman L.R. & Van Eck N.J.P. (2013), A smart local moving algorithm for large-scale modularity-based community detection no. CWTS-WP-2013-005. Leiden: Centre for Science and Technology Studies.
- Waltman L., Van Eck N.J., Dekker R. & Kaymak U. (2013), An evolutionary model of price competition among spatially distributed firms, Computational Economics 42(4): 373-391.
- Waltman L. & Van Eck N.J. (2013), Source normalized indicators of citation impact: an overview of different approaches and an empirical comparison, Scientometrics 96(3): 699-716.
- Waltman L.R., Van Eck N.J.P. & Raan A.F.J. van (2012), Universality of citation distributions revisited, 63(1): 72-77.
- Waltman L. & Van Eck N.J.P. (2012), Constructing a publication-level classification system of science, Proceedings of the 17th International Conference on Science and Technology Indicators. 803-814.
- Tijssen R.J.W., Waltman L. & Van Eck N.J.P. (2012), Research collaboration and the expanding science grid: Measuring globalization processes worldwide, Proceedings of the 17th International Conference on Science and Technology Indicators. 779-790.
- Waltman L., Calero-Medina C.M., Kosten J., Noyons E.C.M., Tijssen R.J.W., Van Eck N.J., Van Leeuwen T.N., Van Raan A.F.J., Visser M.S. & Wouters P.F. (2012), The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation, Proceedings of the 17th International Conference on Science and Technology Indicators. 791-802.
- Van Eck N.J.P., Waltman L.R., Raan A.F.J. van, Klautz R.J.M. & Peul W.C. (2012), Citation analysis may severely underestimate the impact of clinical research as compared to basic research: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R., Calero Medina C.M., Kosten J., Noyons E.C.M., Tijssen R.J.W., Van Eck N.J.P., Leeuwen T.N. van, Raan A.F.J. van, Visser M.S. & Wouters P. (2012), The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R., Van Eck N.J.P., Van Leeuwen T.N. & Visser M.S. (2012), Some modifications to the SNIP journal impact indicator: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R. & Van Eck N.J.P. (2012), Source normalized indicators of citation impact: An overview of different approaches and an empirical comparison: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R. & Van Eck N.J.P. (2012), A new methodology for constructing a publication-level classification system of science: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R., Costas Comesana R. & Eck N.J.P. van (2012), Some limitations of the h Index: a commentary on Ruscio and colleagues' analysis of bibliometric indices, Measurement: Interdisciplinary Research and Perspectives 10(3): 172-175.
- Waltman L.R., Calero-Medina C.M., Kosten J., Noyons E.C.M., Tijssen R.J.W., Van Eck N.J.P., Leeuwen T.N. van, Raan A.F.J. van, Visser M.S. & Wouters P. (2012), The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation, Journal of the American Society for Information Science and Technology 63(12): 2419-2432.
- Waltman L. & Van Eck N.J. (2012), The Inconsistency of the h-index, Journal of the American Society for Information Science and Technology 63(2): 406-415.
- Waltman L.R. & Van Eck N.J.P. (2012), A new methodology for constructing a publication-level classification system of science, 63(12): 2378-2392.
- Waltman L. & Van Eck N.J.P. (2012), A mathematical analysis of the long-run behavior of genetic algorithms for social modeling, Soft Computing 16(6): 1071-1089.
- Zuccala A.A. & Van Eck N.J.P. (2011), Poverty research in a development policy context, Development Policy Review 29(3): 311-330.
- Waltman L.R., Van Eck N.J.P., Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), On the correlation between bibliometric indicators and peer review: Reply to Opthof and Leydesdorff, Scientometrics 88(3): 1017-1022.
- Waltman L.R., Van Eck N.J.P., Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), Towards a new crown indicator: An empirical analysis, Scientometrics 87(3): 467-481.
- Waltman L.R., Eck N.J.P. van, Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), On the correlation between bibliometric indicators and peer review: reply to Opthof and Leydesdorff, Scientometrics 88: 1017-1022.
- Waaijer C.J.F., Bochove C.A. van & Eck N.J.P. van (2011), On the map: Nature and Science editorials, Scientometrics 86(1): 99-112.
- Van Eck N.J.P., Waltman L. & Tijssen R.J.W. (2011), Globalization of science: Geographical distance measurements of research collaboration, Proceedings of the 13th International Conference of the International Society for Scientometrics and Informetrics. . PROCEEDINGS OF ISSI 2011: THE 13TH CONFERENCE OF THE INTERNATIONAL SOCIETY FOR SCIENTOMETRICS AND INFORMETRICS, VOLS 1 AND 2 181-186.
- Van Eck N.J.P., Tijssen R.J.W. & Waltman L. (2011), Globalization of public-private research in worldwide science: co-publication trends and geographical distances between research partners, Proceedings of the 2011 Atlanta Conference on Science and Innovation Policy. .
- Waltman L.R., Van Eck N.J.P. & Raan A.F.J. van (2011), Universality of citation distributions revisited: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R., Tijssen R.J.W. & Van Eck N.J.P. (2011), Globalisation of science in kilometres: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R., Yan E. & Van Eck N.J.P. (2011), A recursive field-normalized bibliometric performance indicator: An application to the field of library and information science: Centre for Science and Technology Studies, Leiden University.
- Waltman L.R. & Van Eck N.J.P. (2011), The inconsistency of the h-index: Centre for Science and Technology Studies (CWTS), Leiden University.
- Waltman L.R., Van Eck N.J.P., Dekker R. & Kaymak U. (2011), An evolutionary model of price competition among spatially distributed firms: Centre for Science and Technology Studies, Leiden University.
- Luwel M., Noyons E.C.M. & Van Eck N.J. (2011), A comparative bibliometric analysis of the STI and the ISSI conference series, Proceedings of the 13th International Conference of the International Society for Scientometrics and Informetrics. 13th International Conference of the International Society for Scientometrics and Informetrics 505-514.
- Waltman L.R., Tijssen R.J.W. & Van Eck N.J.P. (2011), Globalisation of science in kilometres, Journal of Informetrics 5(4): 574-582.
- Tijssen Robert J.W., Waltman Ludo & Van Eck Nees Jan (2011), Collaborations span 1,553 kilometres, 473(7346): 154-154.
- Waltman L.R., Van Eck N.J.P. & Yan E. (2011), A recursive field-normalized bibliometric performance indicator: an application to the field of library and information science, Scientometrics 89(1): 301-314.
- Waltman L.R., Van Eck N.J.P. & Dekker R. (2011), Economic modeling using evolutionary algorithms: the effect of a binary encoding of strategies, Journal of Evolutionary Economics 21(5): 737-756.
- Van Eck N.J.P. & Waltman L. (2011), Text mining and visualization using VOSviewer, ISSI Newsletter 7(3): 50-54.
- Heersmink R., Hoven J. van der, Van Eck N.J.P. & Berg J. van den (2011), Bibliometric mapping of computer and information ethics, Ethics and Information Technology 13(3): 241-249.
- Waltman L.R., Van Eck N.J.P., Leeuwen T.N. van, Visser M.S. & Raan A.F.J. van (2011), Towards a new crown indicator: Some theoretical considerations, Journal of Informetrics 5(1): 37-47.
- Waltman L.R. & Van Eck N.J.P. (2010), The relation between Eigenfactor, audience factor, and influence weight, 61(7): 1476-1486.
- Van Eck N.J.P. & Waltman L.R. (2010), Software survey: VOSviewer, a computer program for bibliometric mapping, Scientometrics 84(2): 523-538.
- Raan A.F.J. van, Leeuwen T.N. van, Visser M.S., Van Eck N.J.P. & Waltman L.R. (2010), Rivals for the crown: Reply to Opthof and Leydesdorff. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Waltman L.R., Van Eck N.J.P. & Noyons E.C.M. (2010), A unified approach to mapping and clustering of bibliometric networks. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Zuccala A.A. & Van Eck N.J.P. (2010), Poverty research in a development policy context. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Waltman L.R. & Van Eck N.J.P. (2010), The relation between eigenfactor, audience factor, and influence weight. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Heersmink R., Van den Hoven J., Van Eck N.J.P. & Van den Berg J. (2010), Bibliometric mapping of computer and information ethics. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Waaijer C.J.F., Van Bochove C.A. & Van Eck N.J.P. (2010), On the map: Nature and Science editorials. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- Van Eck N.J.P., Waltman L.R., Dekker R. & Van den Berg J. (2010), A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS. Leiden: SW Centrum Wetensch. & Techn. Studies (CWTS).
- 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.
- Waaijer C.J.F., Bochove C.A. van & Van Eck N.J.P. (2010), Journal Editorials give indication of driving science issues, 463: 157-157.
- Van Eck N.J., Waltman L., Noyons E.C.M. & Buter R.K. (2010), Automatic term identification for bibliometric mapping, Scientometrics 82(3): 581-596.
- Raan A.F.J. van, Leeuwen T.N. van, Visser M.S., Van Eck N.J.P. & Waltman L.R. (2010), Rivals for the crown: Reply to Opthof and Leydesdorff, Journal of Informetrics 4(3): 431-435.
- Van Eck N.J.P., Waltman L.R., Dekker R. & Berg J. van den (2010), A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS, 61(12): 2405-2416.
- Van Eck N.J.P. & Waltman L.R. (2009), How to Normalize Cooccurrence Data? An Analysis of Some Well-Known Similarity Measures, 60(8): 1635-1651.
- Van Eck N.J.P. & Waltman L.R. (2009), On the proper understanding of the limiting behavior of generalizations of the h- and g-indices, Journal of Informetrics 3(4): .
- Van Eck N.J. & Waltman L. (2009), VOSviewer: A computer program for bibliometric mapping. 12th International Conference on Scientometrics and Informetrics, 12th International Conference on Scientometrics and Informetrics. Proceedings, Vol.2. 2. . 14th International Society of Scientometrics and Informetrics Conference (ISSI) 886-897.
- Waltman L. & Van Eck N.J.P. (2009), A Taxonomy of Bibliometric Performance Indicators Based on the Property of Consistency, Proceedings of the 12th International Conference on Scientometrics and Informetrics. . 14th International Society of Scientometrics and Informetrics Conference (ISSI) 1002-1003.
- Van Eck N.J.P. & Waltman L.R. (2009), VOSviewer: A computer program for bibliometric mapping, Proceedings of the 12th International Conference on Scientometrics and Informetrics. 12th International Conference on Scientometrics and Informetrics 14 July 2009 - 17 July 2009.
- Waltman L. & Van Eck N.J.P. (2009), A simple alternative to the h-index, ISSI Newsletter 5(3): 46-48.
- Waltman L.R. & Van Eck N.J.P. (2009), Some comments on Egghe's derivation of the impact factor distribution, Journal of Informetrics 3(4): 363-366.
- Waltman L.R. & Van Eck N.J.P. (2009), Robust Evolutionary Algorithm Design for Socio-Economic Simulation: Some Comments, Computational Economics 33(1): 103-105.
- Van Eck N.J., Frasincar F. & Chang D. (2008), Cluster-based visualization of concept associations, Proceedings of the 12th International Information Visualisation. . International conference on information visualisation 409-414.
- Van Eck N.J. & Van Wezel M. (2008), Application of reinforcement learning to the game of Othello, Computers & Operations Research 35(6): 1999-2017.
- Van Eck N.J.P. & Waltman L. (2008), Generalizing the h- and g- indices, Journal of Informetrics 2(4): 263-271.
- Van Eck N.J.P. & Waltman L. (2008), Appropriate similarity measures for author co-citation analysis, Journal of the American Society for Information Science and Technology 59(10): 1653-1661.
- Waltman L. & Van Eck N.J. (2008), Some comments on the journal weighted impact factor proposed by Habibzadeh and Yadollahie, Journal of Informetrics 2(4): 369-372.
- Van Eck N.J.P. & Waltman L. (2007), VOS: A new method for visualizing similarities between objects. In: Decker R. & Lenz H.-J. (Eds.), Studies in Classification, Data Analysis, and Knowledge Organization. Advances in Data Analysis: Springer. 299-306.
- Soni A., Van Eck N.J.P. & Kaymak U. (2007), Prediction of stock price movements based on concept map information, Proceedings of the 2007 IEEE Symposium on Computational Intelligence in Multicriteria Decision Making. . 2007 IEEE Symposium on Computational Intelligence in Multi-Criteria Decision Making 205-211.
- Kruse R., Borgelt C., Nauck D.D., Van Eck N.J. & Steinbrecher M. (2007), The role of soft computing in intelligent data analysis, Final program and abstracts of the 2007 IEEE International Conference on Fuzzy Systems. 9-17.
- Van Eck N.J.P. & Waltman L. (2007), Bibliometric mapping of the computational intelligence field, International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 15(5): 625-645.
- Waltman L. & Van Eck N.J.P. (2007), Some comments on the question whether co-occurrence data should be normalized, Journal of the American Society for Information Science and Technology 58(11): 1701-1703.
- Van Eck N.J.P., Waltman L., Berg J. van den & Kaymak U. (2006), Visualizing the WCCI 2006 knowledge domain, Proceedings of the 2006 IEEE International Conference on Fuzzy Systems. . 2006 IEEE INTERNATIONAL CONFERENCE ON FUZZY SYSTEMS, VOLS 1-5 1671-1678.
- Van Eck N.J.P., Frasincar F. & Berg J. van den (2006), Visualizing concept associations using concept density maps, Proceedings of the 10th International Conference on Information Visualisation. . Information Visualization 270-275.
- Van Eck N.J.P., Waltman L., Berg J. van den & Kaymak U. (2006), Visualizing the computational intelligence field, IEEE Computational Intelligence Magazine 1(4): 6-10.
- Van Eck N.J.P., Waltman L. & Berg J. van den (2005), A novel algorithm for visualizing concept associations, Proceedings of the 16th International Workshop on Database and Expert Systems Applications. . Sixteenth International Workshop on Database and Expert Systems Applications, Proceedings 405-409.
- Berg J. van den, Van Eck N.J.P., Waltman L. & Kaymak U. (2004), A VICORE architecture for intelligent knowledge management, Proceedings of the KDNet Symposium on Knowledge-Based Services for the Public Sector. 63-74.