Jan 20, 2011 The University of Amsterdam at Trec 2010: Session, Entity, and Relevance Feedback Dec 10, 2010 Combining Concepts and Language Models for Information Access Jan 20, 2010 Topical Diversity and Relevance Feedback Nov 19, 2009 A query model based on normalized log-likelihood Jan 16, 2009 Incorporating Non-Relevance Information in the Estimation of Query Models Nov 16, 2008 The University of Amsterdam at Trec 2008