Multiple index based information retrieval system
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United States of America Patent
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Jul 28, 2009
Issued Date -
N/A
app pub date -
Jan 25, 2005
filing date -
Jul 26, 2004
priority date (Note) -
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Abstract
An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are identified that predict the presence of other phrases in documents. Documents are the indexed according to their included phrases. The document index is partitioned into multiple indexes, including a primary index and a secondary index. The primary index stores phrase posting lists with relevance rank ordered documents. The secondary index stores excess documents from the posting lists in document order.
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