Processor for fast phrase searching
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United States of America Patent
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Mar 6, 2012
Grant Date -
Jul 23, 2009
app pub date -
Mar 30, 2009
filing date -
Aug 1, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Phrases in a corpus of documents including stopwords are found using a data processor arranged to execute phrase queries. Memory stores an index structure which maps entries in the index structure to documents in the corpus. Entries in the index structure represent words and other entries represent stopwords found in the corpus coalesced with prefixes of respective adjacent words adjacent to the stopwords. The prefixes comprise one or more leading characters of the respective adjacent words. A query processor forms a modified query by substituting a stopword with a search token representing the stopword coalesced with a prefix of the next word in the query. The processor executes the modified query. Also, index structures including coalesced stopwords are created and maintained.
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