System for enhancing decoding performance of text indexes
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United States of America Patent
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Jul 31, 2012
Grant Date -
Aug 26, 2010
app pub date -
May 7, 2010
filing date -
Apr 22, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is a system for enhancing the decoding performance of text indexes of an indexed collection of text documents. 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 system is based on a statistical analysis of the posting list entries of the plurality of list entries. Prior to decoding, the system can select 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 routine is selected and executed.
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