System and method of enhancing decoding performance of text indexes
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United States of America Patent
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Jul 13, 2010
Grant Date -
Oct 27, 2005
app pub date -
Apr 21, 2005
filing date -
Apr 22, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of enhancing the decoding performance of text indexes of an indexed collection of text documents is disclosed. The posting list includes a plurality of list entries being of variable size depending on the value stored in each posting list entry. The inventive method is base on a statistical analysis of the posting list entries of the plurality of list entries. Prior to decoding, the method selects a decoding routine being appropriate to decode the most frequent type of posting list entries or of a plurality of various posting list entries. After selecting a particular decoding routine and executing the decoding routine for decoding of the entire posting list, a failure check is performed. In the exceptional case that a failure has occurred, a second alternative decoding procedure is selected and executed.
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