But theres a technical issue precision recall

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Unformatted text preview: Introduc*on to Informa(on Retrieval Calcula*ng k- idf cosine scores in an IR system Introduc)on to Informa)on Retrieval Introduc*on to Informa(on Retrieval Using many features to determine relevance Introduc)on to Informa)on Retrieval Integra*ng mul*ple features to determine relevance §༊  Modern systems – especially on the Web – use a great number of features: §༊  Arbitrary useful features – not a single unified model §༊  §༊  §༊  §༊  §༊  §༊  §༊  §༊  §༊  Log frequency of query word in anchor text? Query word in color on page? # of images on page? # of (out) links on page? PageRank of page? URL length? URL contains “~”? Page edit recency? Page length? §༊  The New York Times (2008- 06- 03) quoted Amit Singhal as saying...
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