I Celik, F Abel, GJPM Houben (2011), Learning Semantic Relationships between Entities in Twitter, S Auer, O Diaz (Eds.), In Web Engineering p.167-181, Springer.

F Abel, I Celik, GJPM Houben, P Siehndel (2011), Leveraging the semantics of tweets for adaptive faceted search on Twitter, N Noy, L Aroyo, C Welty (Eds.), In The Semantic Web - Proceedings 10th International Semantic Web Conference p.1-17, Springer.

Flavius Frasincar, G.J.P.M. Houben, Phililppe Thiran (2011), Preface to WISM 2011, In Advances in Conceptual Modeling. Recent Developments and New Directions, Springer.

F Abel, Q Gao, GJPM Houben, K Tao (2011), Semantic Enrichment of Twitter Posts for User Profile Construction on the Social Web, G Antoniou, M Grobelnik, E Simperl et al. (Eds.), In The Semantic Web: Research and Applications p.375-389, Springer.

C Hauff, GJPM Houben (2011), Simulating Memory Recall in Personal Search, D Elsweiler, L Kelly, J Kim (Eds.), In Evaluating Personal Search 2011 p.5-6, ECIR.

K Tao, F Abel, GJPM Houben, Q Gao (2011), TUMS: Twitter-based User Modeling Service, R Garcia-Castro, D Fensel, G Antoniou (Eds.), In International Workshop on User Profile Data on the Social Semantic Web p.269-283, Springer.

F Abel, I Celik, C Hauff, L Hollink, GJPM Houben (2011), U-Sem: Semantic Enrichment, User Modeling and Mining Usage Data on the Social Web, S Sadagopan, K Ramamritham (Eds.), In Proceedings of the 1st International Workshop on Usage Analysis and the Web of Data (USEWOD) at WWW2011 p.1-4, Association for Computing Machinery (ACM).

Fabian Abel, Qi Gao, Eelco Herder, Geert-Jan Houben, Daniel Olmedilla, Alexandre Passant (Eds.) (2011), User Profile Data on the Social Semantic Web (UWeb): Proceedings of the International Workshop on User Profile Data on the Social Semantic Web (UWeb), workshop co-located with the 8th Extended Semantic Web Conference, CEUR-WS.

C Hauff, GJPM Houben (2011), WISTUD at MediaEval 2011: Placing Task, M Larson, A Rae, et al. (Eds.), In MediaEval 2011 p.1-2, CEUR-WS.

K Tao, F Abel, C Hauff, GJPM Houben (2011), WISTUD at TREC 2011: Microblog Track, EM Voorhees, LP Buckland (Eds.), In Proceedings of The Text REtrieval Conference 2011 (TREC) p.1-10, TREC / NIST.