Yang Xu, Gareth J. F. Jones, Bin Wang. Query dependent pseudo-relevance feedback based on wikipedia. In James Allan, Javed A. Aslam, Mark Sanderson, ChengXiang Zhai, Justin Zobel, editors, Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009. pages 59-66, ACM, 2009. [doi]
Abstract is missing.