<XML><RECORDS><RECORD><REFERENCE_TYPE>3</REFERENCE_TYPE><REFNUM>8666</REFNUM><AUTHORS><AUTHOR>He,B.</AUTHOR><AUTHOR>Ounis,I.</AUTHOR></AUTHORS><YEAR>2007</YEAR><TITLE>Parameter Sensitivity in the Probabilistic Model for Ad-hoc Retrieval</TITLE><PLACE_PUBLISHED>In Proceedings of the ACM 16th Conference on Information and Knowledge Management (CIKM 2007), Lisboa, Portugal, 2007</PLACE_PUBLISHED><PUBLISHER>ACM Press</PUBLISHER><LABEL>He:2007:8666</LABEL><KEYWORDS><KEYWORD>Probablistic retrieval; information retrieval; parameter sensitivity</KEYWORD></KEYWORDS</RECORD></RECORDS></XML>