IR-part1

IR-part1

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Unformatted text preview: in collec*on that are retrieved §༊  More precise defini*ons and measurements to follow later 7 Introduc)on to Informa)on Retrieval Introduc*on to Informa(on Retrieval Introducing Informa*on Retrieval and Web Search Introduc)on to Informa)on Retrieval Introduc*on to Informa(on Retrieval Term- document incidence matrices Introduc)on to Informa)on Retrieval Sec. 1.1 Unstructured data in 1620 §༊  Which plays of Shakespeare contain the words Brutus AND Caesar but NOT Calpurnia? §༊  One could grep all of Shakespeare’s plays for Brutus and Caesar, then strip out lines containing Calpurnia? §༊  Why is that not the answer? §༊  Slow (for large corpora) §༊  NOT Calpurnia is non- trivial §༊  Other opera*ons (e.g., find the word Romans near c...
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This document was uploaded on 02/14/2014.

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