IR-part2

6 take 1 jaccard coecient a commonly used measure of

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Unformatted text preview: the documents in the collec*on with respect to a query? §༊  Assign a score – say in [0, 1] – to each document §༊  This score measures how well document and query “match”. Introduc)on to Informa)on Retrieval Ch. 6 Query- document matching scores §༊  We need a way of assigning a score to a query/ document pair §༊  Let’s start with a one- term query §༊  If the query term does not occur in the document: score should be 0 §༊  The more frequent the query term in the document, the higher the score (should be) §༊  We will look at a number of alterna*ves for this Introduc)on to Informa)on Retrieval Introduc*on to Informa(on Retrieval Introducing ranked retrieval Introduc)on to Informa)on Retrieval Introduc*on to Informa(on Retrieval Scoring...
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This document was uploaded on 02/14/2014.

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