We describe our participation in the 2008 CLEF Domain-specific track. We evaluate blind relevance feedback models and concept models on the CLEF domain-specific test collection. Applying relevance modeling techniques is found to have a positive effect on the 2008 topic set, in terms of mean average precision and precision@10. Applying concept models for blind relevance feedback, results in even bigger improvements over a query-likelihood baseline, in terms of mean average precision and early precision.

• E. Meij and M. de Rijke, “Concept models for domain-specific search,” in Evaluating systems for multilingual and multimodal information access, 9th workshop of the cross-language evaluation forum, clef 2008, aarhus, denmark, september 17-19, 2008, revised selected papers, 2009.
  [Bibtex]

  @inproceedings{CLEF:2008:meij,
  Author = {Meij, Edgar and de Rijke, Maarten},
  Booktitle = {Evaluating Systems for Multilingual and Multimodal Information Access, 9th Workshop of the Cross-Language Evaluation Forum, CLEF 2008, Aarhus, Denmark, September 17-19, 2008, Revised Selected Papers},
  Date-Added = {2011-10-12 18:31:55 +0200},
  Date-Modified = {2012-10-30 08:44:35 +0000},
  Title = {Concept models for domain-specific search},
  Year = {2009}}