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Conference papers

Finding People and Their Utterances in Social Media, Wouter Weerkamp. In 33rd Annual International ACM SIGIR Conference (SIGIR 2010), July 2010 (pdf, 15KB)

Generating Focused Topic-specific Sentiment Lexicons, Valentin Jijkoun, Maarten de Rijke, and Wouter Weerkamp. In 48th Annual Meeting of the Association for Computational Linguistics (ACL 2010), July 2010

News Comments: Exploring, Modeling, and Online Predicting, Manos Tsagkias, Wouter Weerkamp, and Maarten de Rijke. In 32nd European Conference on Information Retrieval (ECIR 2010), March 2010 (paper: pdf, 535KB / poster: pdf, 260KB)

A Generative Blog Post Retrieval Model that Uses Query Expansion based on External Collections, Wouter Weerkamp, Krisztian Balog and Maarten de Rijke. In Joint conference of the 47th Annual Meeting of the Association for Computational Linguistics and the 4th International Joint Conference on Natural Language Processing of the Asian Federation of Natural Language Processing (ACL-IJCNLP 2009), August 2009 (pdf, 190KB)

Using Contextual Information to Improve Search in Email Archives, Wouter Weerkamp, Krisztian Balog and Maarten de Rijke. In 31st European Conference on Information Retrieval Conference (ECIR 2009), LNCS (5478), pages 400-411, 2009 (pdf, 175KB)

Finding Key Bloggers, One Post at a Time, Wouter Weerkamp, Krisztian Balog, and Maarten de Rijke. In 18th European Conference on Articificial Intelligence (ECAI 2008), pages 318-322, 2008 (pdf, 130KB)

A Few Examples Go A Long Way: Constructing Query Models from Elaborate Query Formulations, Krisztian Balog, Wouter Weerkamp, and Maarten de Rijke. In 31st Annual International ACM SIGIR Conference (SIGIR 2008), pages 371-378, ACM, 2008 (pdf, 370KB)

Credibility Improves Topical Blog Post Retrieval, Wouter Weerkamp and Maarten de Rijke. In Proceedings of ACL-08: HLT, pages 923-931, Association for Computational Linguistics, 2008 (pdf, 190KB)

Journal papers

An Effective Coherence Measure to Determine Topical Consistency in User Generated Content, Jiyin He, Wouter Weerkamp, Martha Larson and Maarten de Rijke. In International Journal on Document Analysis and Recognition, 2009 (pdf, 807KB)

Conference posters

A Two-Stage Model for Blog Feed Search, Wouter Weerkamp, Krisztian Balog, and Maarten de Rijke. In 33rd Annual International ACM SIGIR Conference (SIGIR 2010), July 2010 (paper: pdf, 44KB)

A Query Model Based on Normalized Log-Likelihood, Edgar Meij, Wouter Weerkamp, and Maarten de Rijke. In 18th ACM Conference on Information and Knowledge Management (CIKM 2009), November 2009 (paper: pdf, 182KB / poster: pdf, 576KB)

Predicting the Volume of Comments on Online News Stories, Manos Tsagkias, Wouter Weerkamp, and Maarten de Rijke. In 18th ACM Conference on Information and Knowledge Management (CIKM 2009), November 2009 (paper: pdf, 145KB / poster: pdf, 524KB)

Comparison of Retrieval-Based Hierarchical Clustering Approaches to Person Name Disambiguation, Christof Monz and Wouter Weerkamp. In 32nd Annual International ACM SIGIR Conference (SIGIR 2009), July 2009 (paper: pdf, 135KB / poster: pdf, 412KB)

Bloggers as Experts, Krisztian Balog, Wouter Weerkamp, and Maarten de Rijke. In 31st Annual International ACM SIGIR Conference (SIGIR 2008), pages 753-754, ACM, 2008 (paper: pdf, 110KB / poster: pdf, 1.1MB)

Parsimonious Relevance Models, Edgar Meij, Wouter Weerkamp Krisztian Balog, and Maarten de Rijke. In 31st Annual International ACM SIGIR Conference (SIGIR 2008), pages 817-818, ACM, 2008, July 2008 (paper: pdf, 120KB / poster: pdf, 888KB)

Workshop papers

Mining User Experiences from Online Forums: An Exploration, Valentin Jijkoun, Maarten de Rijke, Wouter Weerkamp, Paul Ackermans, Gijs Geleijnse. In NAACL HLT 2010 workshop on Computational Linguistics in a World of Social Media (#SocialMedia) , 2010 (pdf, 90KB)

PodCred: A Framework for Assessing Podcast Credibility, Manos Tsagkias, Martha Larson, Wouter Weerkamp, and Maarten de Rijke. In CIKM 2008 2nd Workshop on Information Credibility on the Web (WICOW 2008), 2008 (pdf, 165KB; Best Paper Award)

Blogger, Stick to your Story: Modeling Topical Noise in Blogs with Coherence, Jiyin He, Wouter Weerkamp, Martha Larson, and Maarten de Rijke. In SIGIR 2008 Workshop on Analytics for Noisy Unstructured Text Data (AND 2008), 2008 (pdf, 440KB)

Looking at Things Differently: Exploring Perspective Recall for Informal Text Retrieval, Wouter Weerkamp and Maarten de Rijke. In Proceedings of the 8th Dutch-Belgian Information Retrieval Workshop (DIR 2008), pages 93-100, 2008 (pdf, 270KB)

Web Corpus Cleaning using Content and Structure, Katja Hofmann and Wouter Weerkamp. In Building and Exploring Web Corpora, Cahiers du Central (4), pages 145-154, UCL Presses, 2007 (pdf, 110KB)

TREC/ INEX/ CLEF/ ...

Combining Term-based and Category-based Representations for Entity Search, Krisztian Balog, Marc Bron, Maarten de Rijke, and Wouter Weerkamp. In Focused Retrieval and Evaluation. 8th International Workshop of the Initiative for the Evaluation of XML Retrieval (INEX 2009), LNCS, 2010 (pdf, 134KB)

From Blogs to News: Identifying Hot Topics in the Blogosphere, Wouter Weerkamp, Manos Tsagkias, and Maarten de Rijke. In The Eightteenth Text REtrieval Conference (TREC 2009), NIST, 2010 (pdf, 88KB)

The University of Amsterdam at TREC 2009: Blog, Web, Entity, and Relevance Feedback, Krisztian Balog, Marc Bron, Jiyin He, Katja Hofmann, Edgar Meij, Maarten de Rijke, Manos Tsagkias, and Wouter Weerkamp. In TREC 2009 Working Notes, November, 2009 (pdf, 186KB)

A Generative Language Modeling Approach for Ranking Entities, Wouter Weerkamp, Krisztian Balog and Edgar Meij. In Advances in Focused Retrieval, LNCS, 2009 (pdf, 110KB).

The University of Amsterdam at WePS2, Krisztian Balog, Jiyin He, Katja Hofmann, Valentin Jijkoun, Christof Monz, Manos Tsagkias, Wouter Weerkamp, and Maarten de Rijke. In Second Web People Search Evaluation Workshop (WEPS 2009), 2009 (pdf, 182KB)

External Query Expansion in the Blogosphere, Wouter Weerkamp and Maarten de Rijke. In The Seventeenth Text REtrieval Conference (TREC 2008), NIST, 2009 (pdf, 113KB)

Incorporating Non-Relevance Information in the Estimation of Query Models, Edgar Meij, Wouter Weerkamp, Jiyin He and Maarten de Rijke. In The Seventeenth Text REtrieval Conference (TREC 2008), NIST, 2009 (pdf, 155KB)

The University of Amsterdam (ILPS) at INEX 2008, Wouter Weerkamp, Jiyin He, Krisztian Balog, and Edgar Meij. In INEX 2008 Workshop Pre-Proceedings, December, 2008 (pdf, 155KB)

The University of Amsterdam at TREC 2008: Blog, Enterprise, and Relevance Feedback, Krisztian Balog, Edgar Meij, Wouter Weerkamp, Jiyin He, and Maarten de Rijke. In TREC 2008 Working Notes, November, 2008 (pdf, 235KB)

The University of Amsterdam at VideoCLEF 2008, Jiyin He, Xu Zhang, Wouter Weerkamp, and Martha Larson. In Working Notes for the CLEF 2008 Workshop, Aarhus, 2008 (pdf, 100KB)

Language Modeling Approaches to Blog Post and Feed Finding, Breyten Ernsting, Wouter Weerkamp, and Maarten de Rijke. In The Sixteenth Text REtrieval Conference (TREC 2007) Proceedings, NIST, 2008 (pdf, 150KB)

Query and Document Models for Enterprise Search, Krisztian Balog, Katja Hofmann, Wouter Weerkamp, and Maarten de Rijke. In The Sixteenth Text REtrieval Conference (TREC 2007) Proceedings, NIST, 2008 (pdf, 180KB)

The University of Amsterdam at the TREC 2007 Enterprise Track, Krisztian Balog, Katja Hofmann, Wouter Weerkamp, Maarten de Rijke. In TREC 2007 Working Notes, November, 2007 (pdf, 185KB)

The University of Amsterdam at the TREC 2007 Blog Track, Breyten Ernsting, Wouter Weerkamp, Maarten de Rijke. In TREC 2007 Working Notes, November, 2007 (pdf, 145KB)

XSee: Structure Xposed, Roelof van Zwol and Wouter Weerkamp. In Comparative Evaluation of XML Information Retrieval Systems, 5th International Workshop of the Initiative for the Evaluation of XML Retrieval, LNCS (4518), pages 271-283, Springer, 2007 (pdf, 430KB).

Others

Optimising structured document retrieval using Focused and Relevant in Context strategies, Wouter Weerkamp. Msc. Thesis, Utrecht University, The Netherlands, 2006. (pdf, 475KB)