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We also apply topic profiles for identifying and ranking experts 2 given topics of interest, as part of the 2007 TREC Expert Search task. ... We compare different methods for building profiles and evaluate them in terms of their information content and their ability to predict relationships between topics. ... TREC is organized as a series of Tracks, each consisting of one or more specialized problems in Information Retrieval. Example tracks include the Enterprise track and Genomics track. ...fatcat:q2c5zit4mnfmdde4d3n35pkg2q