December 14, 2011. The paper Universality of citation distributions revisited by Ludo Waltman, Nees Jan van Eck, and Anthony van Raan has been published in volume 63, issue 1 of the Journal of the American Society for Information Science and Technology.
December 5, 2011. The paper A mathematical analysis of the long-run behavior of genetic algorithms for social modeling by Ludo Waltman and Nees Jan van Eck has been accepted for publication in Soft Computing.
November 16, 2011. The paper Economic modeling using evolutionary algorithms: The effect of a binary encoding of strategies by Ludo Waltman, Nees Jan van Eck, Rommert Dekker, and Uzay Kaymak has been published in volume 21, issue 5 of the Journal of Evolutionary Economics.
November 3, 2011. The paper Text mining and visualization using VOSviewer by Nees Jan van Eck and Ludo Waltman has been published in volume 7, issue 3 of the ISSI Newsletter.
October 13, 2011. Today I have successfully defended my PhD thesis. The slides of my introductory presentation are available here (in Dutch).
October 13, 2011. The paper Globalisation of science in kilometres by Ludo Waltman, Robert Tijssen, and Nees Jan van Eck has been published in volume 5, issue 4 of the Journal of Informetrics.
September 13, 2011. The paper A recursive field-normalized bibliometric performance indicator: An application to the field of library and information science by Ludo Waltman, Erjia Yan, and Nees Jan van Eck has been published in volume 89, issue 1 of Scientometrics.
September 11, 2011. The paper The inconsistency of the h-index by Ludo Waltman and Nees Jan van Eck has been accepted for publication in the Journal of the American Society for Information Science and Technology.
September 10, 2011. VOSviewer version 1.4.0 has been released and is available at www.vosviewer.com.
September 1, 2011. The paper Universality of citation distributions revisited by Ludo Waltman, Nees Jan van Eck, and Anthony van Raan has been accepted for publication in the Journal of the American Society for Information Science and Technology.
August 10, 2011. The paper On the correlation between bibliometric indicators and peer review: Reply to Opthof and Leydesdorff by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been published in volume 88, issue 3 of Scientometrics.
August 1, 2011. The paper Bibliometric mapping of computer and information ethics by Richard Heersmink, Jeroen van den Hoven, Nees Jan van Eck, and Jan van den Berg has been published in volume 13, issue 3 of Ethics and Information Technology.
June 24, 2011. The paper A recursive field-normalized bibliometric performance indicator: An application to the field of library and information science by Ludo Waltman, Erjia Yan, and Nees Jan van Eck has been accepted for publication in Scientometrics.
June 13, 2011. VOSviewer version 1.3.2 has been released and is available at www.vosviewer.com.
May 30, 2011. The paper On the correlation between bibliometric indicators and peer review: Reply to Opthof and Leydesdorff by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been accepted for publication in Scientometrics.
May 17, 2011. The paper Globalisation of science in kilometres by Ludo Waltman, Robert Tijssen, and Nees Jan van Eck has been accepted for publication in the Journal of Informetrics.
May 11, 2011. The correspondence Collaborations span 1,553 kilometres by Robert Tijssen, Ludo Waltman, and Nees Jan van Eck has been published in volume 473, number 7346 of Nature. A preprint of the full paper is available in the arXiv.
May 5, 2011. The paper Text-mining and visualization using VOSviewer by Nees Jan van Eck and Ludo Waltman has been accepted for presentation at the 1st Global TechMining Conference.
April 23, 2011. The paper Towards a new crown indicator: An empirical analysis by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been published in volume 87, issue 3 of Scientometrics.
April 15, 2010. The paper Poverty research in a development policy context by Alesia Zuccala and Nees Jan van Eck has been published in volume 29, issue 3 of Development Policy Review.
April 7, 2010. The paper Bibliometric mapping of computer and information ethics by Richard Heersmink, Jeroen van den Hoven, Nees Jan van Eck, and Jan van den Berg has been accepted for publication in Ethics and Information Technology.
March 9, 2011. VOSviewer version 1.3.1 has been released and is available at www.vosviewer.com.
February 3, 2011. The paper Towards a new crown indicator: An empirical analysis by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been accepted for publication in Scientometrics.
January 24, 2011. VOSviewer version 1.3.0 has been released and is available at www.vosviewer.com.
December 24, 2010. The paper Towards a new crown indicator: Some theoretical considerations by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been published in volume 5, issue 1 of the Journal of Informetrics.
December 6, 2010. The paper On the map: Nature and Science editorials by Cathelijn Waaijer, Cornelis van Bochove, and Nees Jan van Eck has been published in volume 86, issue 1 of Scientometrics.
November 12, 2010. The paper A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS by Nees Jan van Eck, Ludo Waltman, Rommert Dekker, and Jan van den Berg has been published in volume 61, issue 12 of the Journal of the American Society for Information Science and Technology.
November 3, 2010. The paper Poverty research in a development policy context by Alesia Zuccala and Nees Jan van Eck has been accepted for publication in Development Policy Review.
October 18, 2010. The paper Bibliometric mapping of computer and information ethics by Richard Heersmink, Jeroen van den Hoven, Nees Jan van Eck, and Jan van den Berg has been submitted.
September 23, 2010. The slides of the lecture that I gave today during the CWTS Course 'Measuring Science' are available here.
September 9, 2010. The slides of the presentation that I gave today at the 11th International Conference on Science and Technology Indicators are available here.
September 9, 2010. The paper A unified approach to mapping and clustering of bibliometric networks by Ludo Waltman, Nees Jan van Eck, and Ed Noyons has been published in volume 4, issue 4 of the Journal of Informetrics.
September 7, 2010. The paper Towards a new crown indicator: An empirical analysis by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been submitted.
August 25, 2010. The paper Towards a new crown indicator: Some theoretical considerations by Ludo Waltman, Nees Jan van Eck, Thed van Leeuwen, Martijn Visser, and Anthony van Raan has been accepted for publication in the Journal of Informetrics.
July 16, 2010. The paper A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS by Nees Jan van Eck, Ludo Waltman, Rommert Dekker, and Jan van den Berg has been accepted for publication in the Journal of the American Society for Information Science and Technology.
July 15, 2010. The paper A unified approach to mapping and clustering of bibliometric networks by Ludo Waltman, Nees Jan van Eck, and Ed Noyons has been accepted for publication in the Journal of Informetrics.
June 15, 2010. VOSviewer version 1.2.1 has been released and is available at www.vosviewer.com.
June 15, 2010. The paper The relation between Eigenfactor, audience factor, and influence weight by Ludo Waltman and Nees Jan van Eck has been published in volume 61, issue 7 of the Journal of the American Society for Information Science and Technology.
June 13, 2010. The paper Software survey: VOSviewer, a computer program for bibliometric mapping by Nees Jan van Eck and Ludo Waltman has been published in volume 84, issue 2 of Scientometrics.
June 9, 2010. The paper Rivals for the crown: Reply to Opthof and Leydesdorff by Anthony van Raan, Thed van Leeuwen, Martijn Visser, Nees Jan van Eck, and Ludo Waltman has been published in volume 4, issue 3 of the Journal of Informetrics.
June 5, 2010. The paper A unified approach to mapping and clustering of bibliometric networks by Ludo Waltman, Nees Jan van Eck, and Ed Noyons has been submitted.
May 24, 2010. The paper Economic modeling using evolutionary algorithms: The effect of a binary encoding of strategies by Ludo Waltman, Nees Jan van Eck, Rommert Dekker, and Uzay Kaymak has been accepted for publication in the Journal of Evolutionary Economics.
May 18, 2010. VOSviewer version 1.2.0 has been released and is available at www.vosviewer.com.
March 31, 2010. The paper Rivals for the crown: Reply to Opthof and Leydesdorff by Anthony van Raan, Thed van Leeuwen, Martijn Visser, Nees Jan van Eck, and Ludo Waltman has been accepted for publication in the Journal of Informetrics.
March 15, 2010. The paper The relation between Eigenfactor, audience factor, and influence weight by Ludo Waltman and Nees Jan van Eck has been accepted for publication in the Journal of the American Society for Information Science and Technology.
March 4, 2010. The paper A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS by Nees Jan van Eck, Ludo Waltman, Rommert Dekker, and Jan van den Berg has been submitted.
March 2, 2010. The paper Automatic term identification for bibliometric mapping by Nees Jan van Eck, Ludo Waltman, Ed Noyons, and Reindert Buter has been published in volume 82, issue 3 of Scientometrics.
February 25, 2009. The paper On the map: Nature and Science editorials by Cathelijn Waaijer, Cornelis van Bochove, and Nees Jan van Eck has been accepted for publication in Scientometrics.
February 22, 2009. The working paper On the map: Nature and Science editorials by Cathelijn Waaijer, Cornelis van Bochove, and Nees Jan van Eck has been published in the CWTS Working Paper Series and is available online.
February 9, 2009. The paper On the map: Nature and Science editorials by Cathelijn Waaijer, Cornelis van Bochove, and Nees Jan van Eck has been submitted.
January 14, 2010. The correspondence Journal Editorials give indication of driving science issues by Cathelijn Waaijer, Cornelis van Bochove, and Nees Jan van Eck has been published in volume 463, number 7278 of Nature. More information on our analysis can be found here.
January 6, 2010. VOSviewer version 1.1.0 has been released and is available at www.vosviewer.com.
December 30, 2009. The paper The relation between Eigenfactor, audience factor, and influence weight by Ludo Waltman and Nees Jan van Eck has been submitted.
December 10, 2009. The paper Software survey: VOSviewer, a computer program for bibliometric mapping by Nees Jan van Eck and Ludo Waltman has been accepted for publication in Scientometrics.
October 27, 2009. The paper A simple alternative to the h-index by Ludo Waltman and Nees Jan van Eck has been published in volume 5, issue 3 of the ISSI Newsletter.
October 8, 2009. The slides of the presentation that I gave today during the Modelling Science workshop in Amsterdam are available here.
August 26, 2009. The technical report A simple alternative to the h-index by Ludo Waltman and Nees Jan van Eck has been published in the ERIM Report Series Research in Management and is available online.
August 19, 2009. The letter to the editor On the proper understanding of the limiting behavior of generalizations of the h- and g-indices by Nees Jan van Eck and Ludo Waltman has been published in volume 3, issue 4 of the Journal of Informetrics. The letter is a rejoinder to a letter by Marek Gagolewski in which our paper Generalizing the h- and g-indices is criticized.
August 19, 2009. The paper Some comments on Egghe's derivation of the impact factor distribution by Ludo Waltman and Nees Jan van Eck has been published in volume 3, issue 4 of the Journal of Informetrics. The paper is a comment on the paper Mathematical derivation of the impact factor distribution by Leo Egghe.
July 31, 2009. The paper VOSviewer: A computer program for bibliometric mapping by Nees Jan van Eck and Ludo Waltman has been submitted.
July 17, 2009. The slides of the presentation that I gave today during the 12th International Conference on Scientometrics and Informetrics are available here.
July 15, 2009. The paper How to normalize co-occurrence data? An analysis of some well-known similarity measures by Nees Jan van Eck and Ludo Waltman has been published in volume 60, issue 8 of the Journal of the American Society for Information Science and Technology.
July 9, 2009. The new VOSviewer web site www.vosviewer.com has been launched.
June 9, 2009. The technical report Economic modeling using evolutionary algorithms: The effect of a binary encoding of strategies by Ludo Waltman, Nees Jan van Eck, Rommert Dekker, and Uzay Kaymak has been published in the ERIM Report Series Research in Management and is available online.
May 19, 2009. The paper Economic modeling using evolutionary algorithms: The effect of a binary encoding of strategies by Ludo Waltman, Nees Jan van Eck, Rommert Dekker, and Uzay Kaymak has been submitted.
May 6, 2009. The paper Some comments on Egghe's derivation of the impact factor distribution by Ludo Waltman and Nees Jan van Eck has been accepted for publication in the Journal of Informetrics. The paper is a comment on the paper Mathematical derivation of the impact factor distribution by Leo Egghe.
April 13, 2009. A map showing relations among 5000 major scientific journals has been constructed using the VOS mapping technique. The map is based on co-citation data. Click here to view the map.
March 19, 2009. The technical report Some comments on Egghe's derivation of the impact factor distribution by Ludo Waltman and Nees Jan van Eck has been published in the ERIM Report Series Research in Management and is available online.
March 19, 2009. The technical report A taxonomy of bibliometric performance indicators based on the property of consistency by Ludo Waltman and Nees Jan van Eck has been published in the ERIM Report Series Research in Management and is available online.
March 19, 2009. The technical report A mathematical analysis of the long-run behavior of genetic algorithms for social modeling by Ludo Waltman and Nees Jan van Eck has been published in the ERIM Report Series Research in Management and is available online.
March 17, 2009. The paper Some comments on Egghe's derivation of the impact factor distribution by Ludo Waltman and Nees Jan van Eck has been submitted.
February 27, 2009. The letter to the editor On the proper understanding of the limiting behavior of generalizations of the h- and g-indices by Nees Jan van Eck and Ludo Waltman has been accepted for publication in the Journal of Informetrics. The letter is a rejoinder to a letter by Marek Gagolewski in which our paper Generalizing the h- and g-indices is criticized.
February 20, 2008. The paper How to normalize co-occurrence data? An analysis of some well-known similarity measures by Nees Jan van Eck and Ludo Waltman has been accepted for publication in the Journal of the American Society for Information Science and Technology.
February 19, 2009. The technical report VOSviewer: A computer program for bibliometric mapping by Nees Jan van Eck and Ludo Waltman has been published in the ERIM Report Series Research in Management and is available online.
January 25, 2009. The paper VOSviewer: A computer program for bibliometric mapping by Nees Jan van Eck and Ludo Waltman has been submitted. VOSviewer is available here.
January 22, 2009. The technical report How to normalize co-occurrence data? An analysis of some well-known similarity measures by Nees Jan van Eck and Ludo Waltman has been published in the ERIM Report Series Research in Management and is available online.
January 7, 2009. The paper How to normalize co-occurrence data? An analysis of some well-known similarity measures by Nees Jan van Eck and Ludo Waltman has been submitted.
December 11, 2008. The paper Robust evolutionary algorithm design for socio-economic simulation: Some comments by Ludo Waltman and Nees Jan van Eck has been published in volume 33, issue 1 of Computational Economics.
December 5, 2008. The technical report Automatic term identification for bibliometric mapping by Nees Jan van Eck, Ludo Waltman, Ed Noyons, and Reindert Buter has been published in the ERIM Report Series Research in Management and is available online.
November 30, 2008. The paper Automatic term identification for bibliometric mapping by Nees Jan van Eck, Ludo Waltman, Ed Noyons, and Reindert Buter has been submitted.
November 12, 2008. The paper Some comments on the journal weighted impact factor proposed by Habibzadeh and Yadollahie by Ludo Waltman and Nees Jan van Eck has been published in volume 2, issue 4 of the Journal of Informetrics.
November 12, 2008. The paper Generalizing the h- and g-indices by Nees Jan van Eck and Ludo Waltman has been published in volume 2, issue 4 of the Journal of Informetrics.
September 18, 2008. The slides of the presentation that I gave today at the 10th International Conference on Science and Technology Indicators are available here. The maps that were shown in the presentation are available here. The VOS visualization software is available here.
September 18, 2008. The slides of the presentation that Ludo Waltman gave today at the 10th International Conference on Science and Technology Indicators are available here. The term map of the operations research field that was shown in the presentation is available here.
September 12, 2008. The technical report Generalizing the h- and g-indices by Nees Jan van Eck and Ludo Waltman has been published in the ERIM Report Series Research in Management and is available online.
September 9, 2008. The paper Generalizing the h- and g-indices by Nees Jan van Eck and Ludo Waltman has been accepted for publication in the Journal of Informetrics.
August 1, 2008. The paper Generalizing the h- and g-indices by Nees Jan van Eck and Ludo Waltman has been submitted.
July 17, 2008. The paper Appropriate similarity measures for author cocitation analysis by Nees Jan van Eck and Ludo Waltman has been published in volume 59, issue 10 of the Journal of the American Society for Information Science and Technology.
June 30, 2008. Two abstracts have been accepted for presentation at the 10th International Conference on Science and Technology Indicators. One abstract is entitled An experimental comparison of bibliometric mapping techniques and is written by Nees Jan van Eck, Ludo Waltman, Rommert Dekker, and Jan van den Berg. The other abstract is entitled Automatic term identification for bibliometric mapping and is written by Nees Jan van Eck, Ludo Waltman, Ed Noyons, and Renald Buter.
June 28, 2008. The slides of the presentation that I gave today at the 14th International Conference on Computing in Economics and Finance are available here. The slides of the presentation that Ludo Waltman gave today at the 14th International Conference on Computing in Economics and Finance are available here.
June 12, 2008. The paper Some comments on the journal weighted impact factor proposed by Habibzadeh and Yadollahie by Ludo Waltman and Nees Jan van Eck has been accepted for publication in the Journal of Informetrics. The paper is a comment on a paper by Farrokh Habibzadeh and Mahboobeh Yadollahie recently published in the Journal of Informetrics.
May 26, 2008. The paper Robust evolutionary algorithm design for socio-economic simulation: Some comments by Ludo Waltman and Nees Jan van Eck has been accepted for publication in Computational Economics. The paper is a comment on two papers by Floortje Alkemade, Han La Poutré, and Hans Amman (published in Computational Economics and Computational Intelligence) and on a correction of these papers (to be published in Computational Economics).
April 10, 2008. The paper Cluster-based visualization of concept associations by Nees Jan van Eck, Flavius Frasincar, and Dwain Chang has been accepted for presentation at the 12th International Conference on Information Visualisation to be held in London, United Kingdom on July 8-11, 2008.
March 10, 2008. The papers An algorithm for calculating the long-run behavior of genetic algorithms in economic modeling and Equilibria in first-price sealed-bid auctions of multiple heterogeneous objects: a numerical approach, both by Ludo Waltman and Nees Jan van Eck, have been accepted for presentation at the 14th International Conference on Computing in Economics and Finance to be held in Paris, France on June 26-28, 2008.
February 24, 2008. The paper Appropriate similarity measures for author cocitation analysis by Nees Jan van Eck and Ludo Waltman has been accepted for publication in the Journal of the American Society for Information Science and Technology.
February 16, 2008. A revised version of the paper Appropriate similarity measures for author cocitation analysis by Nees Jan van Eck and Ludo Waltman has been submitted to the Journal of the American Society for Information Science and Technology.
January 16, 2008. The technical report Appropriate similarity measures for author cocitation analysis by Nees Jan van Eck and Ludo Waltman has been published in the ERIM Report Series Research in Management and is available online.
December 12, 2007. The brief communication Appropriate similarity measures for author cocitation analysis by Nees Jan van Eck and Ludo Waltman has been submitted to the Journal of the American Society for Information Science and Technology.
November 20, 2007. The paper Application of reinforcement learning to the game of Othello by Nees Jan van Eck and Michiel van Wezel will be published in volume 35, issue 6 of the Computers & Operations Research.
October 15, 2007. The paper Bibliometric mapping of the computational intelligence field by Nees Jan van Eck and Ludo Waltman has been published in volume 15, issue 5 of the International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems.
August 27, 2007. The brief communication Some comments on the question whether co-occurrence data should be normalized by Ludo Waltman and Nees Jan van Eck has been published in volume 58, issue 11 of the Journal of the American Society for Information Science and Technology.
June 24, 2007. The slides of the presentation Applying ideas from homogeneity analysis to visualize similarity data, which I will give at the Correspondence Analysis and Related Methods (CARME) conference on June 26, are available online. The CARME conference takes place at Erasmus University Rotterdam from July 25 to July 27.
June 7, 2007. The paper Predicting stock price movements using concept maps by Ankit Soni, Nees Jan van Eck, and Uzay Kaymak has been accepted for publication in the International Journal of Information Technology and Intelligent Computing.
June 4, 2007. A MATLAB implementation and a C implementation of VOS have been made available online. VOS is a method for visualizing similarities between objects that I developed together with Ludo Waltman. The method has been used in a number of our publications.
May 10, 2007. The technical report Bibliometric mapping of the computational intelligence field by Nees Jan van Eck and Ludo Waltman has been published in the ERIM Report Series Research in Management and is available online.
May 1, 2007. The camera-ready version of the invited paper The role of soft computing in intelligent data analysis by Rudolf Kruse, Christian Borgelt, Detlef Nauck, Nees Jan van Eck, and Matthias Steinbrecher has been completed. The paper will be published in Proceedings of the 2007 IEEE International Conference on Fuzzy Systems.
March 28, 2007. The brief communication Some comments on the question whether co-occurrence data should be normalized by Ludo Waltman and Nees Jan van Eck, which is forthcoming in the Journal of the American Society for Information Science and Technology, has been published as a technical report in the ERIM Report Series Research in Management and is available online.
March 20, 2007. The paper Bibliometric mapping of the computational intelligence field by Nees Jan van Eck and Ludo Waltman has been conditionally accepted for publication in a special issue of the International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems.
March 10, 2007. I will give a presentation entitled Bibliometric mapping of the field of economics using a new visualization method at the Tinbergen Institute PhD lunch seminar on March 15. The abstract of the presentation is available here.
March 4, 2007. Loet Leydesdorff has written a reply to our brief communication Some comments on the question whether co-occurrence data should be normalized. Both our brief communication and Leydesdorff's reply are available at Leydesdorff's website.
December 31, 2006. The paper Bibliometric mapping of the computational intelligence field by Nees Jan van Eck and Ludo Waltman has been submitted for publication in a special issue of the International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems. The concept (density) maps and the concept map viewer are available here.
December 22, 2006. The brief communication Some comments on the question whether co-occurrence data should be normalized by Ludo Waltman and Nees Jan van Eck has been accepted for publication in the Journal of the American Society for Information Science and Technology.
November 3, 2006. The paper Visualizing the computational intelligence field by Nees Jan van Eck, Ludo Waltman, Jan van den Berg, and Uzay Kaymak has been published in IEEE Computational Intelligence Magazine. The concept (density) maps and the concept map viewer are available here.
September 27, 2006. The extended abstract On the visualization of the soft computing knowledge domain by Nees Jan van Eck, Ludo Waltman, Jan van den Berg, and Uzay Kaymak has been published in Proceedings of the Symposium on Fuzzy Systems in Computer Science 2006.
August 22, 2006. The paper Visualizing the computational intelligence field by Nees Jan van Eck, Ludo Waltman, Jan van den Berg, and Uzay Kaymak has been submitted to IEEE Computational Intelligence Magazine.
August 19, 2006. The paper VOS: a new method for visualizing similarities between objects by Nees Jan van Eck and Ludo Waltman has been accepted for publication in Proceedings of the 30th Annual Conference of the German Classification Society.
August 17, 2006. I am back from holiday.
August 3, 2006. I am going on holiday from August 4 to August 16.
August 3, 2006. The extended abstract On the visualization of the soft computing knowledge domain by Nees Jan van Eck, Ludo Waltman, Jan van den Berg, and Uzay Kaymak has been accepted for presentation at the Symposium on Fuzzy Systems in Computer Science 2006 to be held in Magdeburg, Germany on September 27-28, 2006.
July 20, 2006. I won the best session presentation award at the 2006 IEEE World Congress on Computational Intelligence held in Vancouver, Canada, for my presentation of the paper Visualizing the WCCI 2006 knowledge domain.
June 30, 2006. The paper Application of reinforcement learning to the game of Othello by Nees Jan van Eck and Michiel van Wezel has been accepted for publication in Computers & Operations Research.
June 12, 2006. I received a travel grant award from the IEEE Computational Intelligence Society to support my travel to the 2006 IEEE World Congress on Computational Intelligence to be held in Vancouver, Canada on July 16-21, 2006.
May 31, 2006. I have completed my PhD research proposal. The proposed research is concerned with extracting and visualizing information from scientific literature.
May 16, 2006. The abstract A comparison of knowledge domain visualization approaches has been accepted for presentation in the poster session at the conference 50 Years of Econometrics to be held in Rotterdam, the Netherlands on June 9-10, 2006.
April 27, 2006. The paper VOS: a new method for visualizing similarities between objects by Nees Jan van Eck and Ludo Waltman has been submitted for publication in Proceedings of the 30th Annual Conference of the German Classification Society.
April 15, 2006. The paper Visualizing the WCCI 2006 knowledge domain by Nees Jan van Eck, Ludo Waltman, Jan van den Berg, and Uzay Kaymak has been accepted for presentation at the 2006 IEEE World Congres on Computational Intelligence to be held in Vancouver, Canada on July 16-21, 2006. The concept map based on the abstracts of the WCCI 2006 can be viewed here.
April 5, 2006. The technical report VOS: a new method for visualizing similarities between objects by Nees Jan van Eck and Ludo Waltman has been completed. The report has been published in the ERIM Report Series Research in Management and is available online.
April 1, 2006. The paper Visualizing concept associations using concept density maps by Nees Jan van Eck, Flavius Frasincar, and Jan van den Berg has been accepted for presentation at the 10th International Conference on Information Visualisation to be held in London, United Kingdom on July 5-7, 2006.
January 10, 2006. The abstract A new method for visualizing associations between concepts by Nees Jan van Eck, Ludo Waltman, and Jan van den Berg has been accepted for presentation at the 30th Annual Conference of the German Classification Society to be held in Berlin, Germany on March 8-10, 2006.
December 6, 2005. The technical report Reinforcement learning and its application to Othello by Nees Jan van Eck and Michiel van Wezel has appeared as Econometric Institute Report and is available online.
September 9, 2005. The final version of an extended abstract of the paper A novel algorithm for visualizing concept associations by Nees Jan van Eck, Ludo Waltman, and Jan van den Berg has been completed. The abstract will be published in Proceedings of the 17th Belgian-Dutch Conference on Artificial Intelligence.
August 24, 2005. I have moved from room H16-26 to room H9-7.
August 22, 2005. An extended abstract of the paper A novel algorithm for visualizing concept associations by Nees Jan van Eck, Ludo Waltman, and Jan van den Berg has been accepted for presentation in the poster session at the 17th Belgian-Dutch Conference on Artificial Intelligence.
July 11, 2005. I am back from holiday. Some pictures are available here.
June 24, 2005. I am going on holiday from June 25 to July 10.
June 14, 2005. An extended abstract of the paper A novel algorithm for visualizing concept associations by Nees Jan van Eck, Ludo Waltman, and Jan van den Berg has been submitted to the 17th Belgian-Dutch Conference on Artificial Intelligence.
June 1, 2005. I have started as a PhD student at the Faculty of Economics of Erasmus University Rotterdam. The name of my research project is Visualization of concept relations (VICORE).
May 24, 2005. I have finished the master program Informatics & Economics at Erasmus University Rotterdam.
May 15, 2005. The final version of the paper A novel algorithm for visualizing concept associations by Nees Jan van Eck, Ludo Waltman, and Jan van den Berg has been completed. The paper will be published in Proceedings of the 6th International Workshop on Theory and Applications of Knowledge Management.