Kaptein, R., Hiemstra, D., Kamps, J. (2010) How different are language models and word clouds?.

In Gurrin, C. He, Y. Kazai, G. Kruschwitz, U. Little, S. Roelleke, T. Rüger, S. van Rijsbergen, K. (Eds.), Advances in Information Retrieval: 32nd European Conference on IR Research, ECIR 2010, Milton Keynes, UK, March 28-31, 2010: proceedings (pp 556-568) (Lecture Notes in Computer Science, Vol. 5993). Springer.

Kaptein, R., Kamps, J., Hiemstra, D. (2009) The impact of positive, negative and topical relevance feedback.

In Voorhees, E.M. Buckland, L.P. (Eds.), The seventeenth Text REtrieval Conference (TREC 2008) proceedings. National Institute of Standards and Technology.

Kaptein, R., Kamps, J., Li, R., Hiemstra, D. (2008) Experiments with positive, negative and topical relevance feedback.

In The seventeenth Text REtrieval Conference (TREC 2008) notebook (pp 1-5). National Institute of Standards and Technology.

Kaptein, R., Kamps, J. (2008) Improving information access by relevance and topical feedback.

In Hopfgartner, F. (Eds.), Second International Workshop on Adaptive Information Retrieval (AIR): London, United Kingdom, 18th October 2008: Proceedings (pp 58-63)

Kaptein, R., Kamps, J. (2009) Using links to classify Wikipedia pages.

In Geva, S. Kamps, J. Trotman, A. (Eds.), Advances in Focused Retrieval: 7th International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2008, Dagstuhl Castle, Germany, December 15-18, 2008 : revised and selected papers (pp 432-435) (Lecture Notes in Computer Science, Vol. 5631). Springer.

Kaptein, R., Kamps, J. (2009) Finding entities in Wikipedia using links and categories.

In Geva, S. Kamps, J. Trotman, A. (Eds.), Advances in Focused Retrieval: 7th International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2008, Dagstuhl Castle, Germany, December 15-18, 2008 : revised and selected papers (pp 273-279) (Lecture Notes in Computer Science, Vol. 5631). Springer.

Kaptein, R., Kamps, J. (2009) Web directories as topical context.

In Aly, R. Hauff, C. den Hamer, I. Hiemstra, D. Huibers, T. de Jong, F. (Eds.), Proceedings of the 9th Dutch-Belgian Information Retrieval Workshop (DIR 2009): February 2-3, 2009, Enschede, the Netherlands (pp 71-78). University of Twente, Centre for Telematics and Information Technology (CTIT).

Kaptein, R., Kamps, J. (2011) Word clouds of multiple search results.

In Hanbury, A. Rauber, A. de Vries, A.P. (Eds.), Multidisciplinary Information Retrieval: Second Information Retrieval Facility Conference, IRFC 2011, Vienna, Austria, June 6, 2011: proceedings (pp 78-93) (Lecture Notes in Computer Science, Vol. 6653). Springer.

Kaptein, R., Kamps, J. (2012) Using word clouds to summarize multiple search results.

Paper | UvA-DARE

Kaptein, R., Kamps, J. (2013) Using Wikipedia’s category structure for entity search.

In Eickhoff, C. de Vries, A.P. (Eds.), Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval: Delft, The Netherlands, April 26th, 2013 (pp 46-47) (CEUR Workshop Proceedings, Vol. 986). CEUR-WS.

Kaptein, R., Kamps, J. (2013) Exploiting the category structure of Wikipedia for entity ranking.

Artificial Intelligence, Vol. 194 (pp 111-129)

Article | https://doi.org/10.1016/j.artint.2012.06.003 | UvA-DARE

Kaptein, R., Koolen, M., Kamps, J. (2009) Using Wikipedia categories for ad hoc search.

In Sanderson, M. Zhai, C. Zobel, J. Allan, J. Aslam, J.A. (Eds.), Proceedings: 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval: SIGIR 2009, Boston, Massachusetts, July 19-23, 2009 (pp 824-825). ACM Press.

Kaptein, R., Koolen, M., Kamps, J. (2009) Experiments with result diversity and entity ranking: Text, anchors, links, and Wikipedia.

In The eighteenth Text REtrieval Conference (TREC 2009) notebook. National Institute of Standards and Technology.

Kaptein, R., Koolen, M., Kamps, J. (2010) Result diversity and entity ranking experiments: anchors, links, text and Wikipedia.

In Voorhees, E.M. Buckland, L.P. (Eds.), The Eighteenth Text REtrieval Conference (TREC 2009) Proceedings (NIST Special Publication). National Institute of Standards and Technology.

Kaptein, R., Li, R., Hiemstra, D., Kamps, J. (2008) Using parsimonious language models on web data.

In Myaeng, S.H. Oard, D.W. Sebastiani, F. Chua, T.S. Leong, M.K. (Eds.), ACM SIGIR 2008: 31st annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 20-24, 2008, Singapore: Proceedings (pp 763-764). Association for Computing Machinery (ACM).

Kaptein, R., Marx, M., Kamps, J. (2009) Who said what to whom? Capturing the structure of debates.

In Sanderson, M. Zhai, C. Zobel, J. Allan, J. Aslam, J.A. (Eds.), Proceedings: 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval: SIGIR 2009, Boston, Massachusetts, July 19-23, 2009 (pp 831-832). ACM Press.

Kaptein, R., Serdyukov, P., de Vries, A., Kamps, J. (2010) Entity ranking using Wikipedia as a pivot.

In Huang, X.J. Jones, G. Koudas, N. Wu, X. Collins-Thompson, K. (Eds.), Proceedings of the 19th ACM Conference on Information and Knowledge Management (CIKM 2010), Toronto, Canada (pp 69-78). ACM.

Kaptein, R., Serdyukov, P., Kamps, J. (2010) Linking Wikipedia to the web.

In Chen, H.-H. Efthimiadis, E.N. Savoy, J. Crestani, F. Marchand-Maillet, S. (Eds.), SIGIR 2010: proceedings: 33rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval: Geneva, Switzerland, July 19-23, 2010 (pp 839-840). Association for Computing Machinery.

Karstens, B., Koolen, M., Dari Mattiacci, G., Bod, R., Ginsburg, T. (2014) Reference Structures of National Constitutions.

In Winkels, R. Lettieri, N. (Eds.), NAiL 2014: 2nd international workshop on "Network Analysis in Law": Wednesday december 10th 2014: in conjunction with JURIX 2014: 27th International Conference on Legal Knowledge and Information Systems, Krakow, Poland. [S.n.].

Karstens, B. (2014) The Lack of a Satisfactory Conceptualization of the Notion of Error in Historiography of Science: Two Main Approaches and their Shortcomings.

In Hon, G. Boumans, M. Petersen, A.C. (Eds.), Error and Uncertainty in Scientific Practice (pp 13-37). Pickering & Chatto.