System and method for searching dates efficiently in a collection of web documents

A date querying system processes free-form text in documents to identify and locate some or all of the dates in the documents using extended regular expression matching to capture various date formats. The system packages a canonicalized format of each identified date to support various types of que...

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Bibliographic Details
Main Authors DILL STEPHEN, KORUPOLU MADHUKAR R
Format Patent
LanguageEnglish
Published 01.06.2010
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A date querying system processes free-form text in documents to identify and locate some or all of the dates in the documents using extended regular expression matching to capture various date formats. The system packages a canonicalized format of each identified date to support various types of queries such as, for example, specific date querying, hierarchical date querying, range date querying, proximity queries comprising a date and any keywords, and any combination of types of queries. The system scans a document to identify the various format dates occurring in the document, disambiguates the resulting occurrences of dates, and canonicalizes the dates according to one or more predetermined formats.
Bibliography:Application Number: US20050259664