System and method for automatically extracting interesting phrases in a large dynamic corpus
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United States of America Patent
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Issued Date -
Mar 22, 2007
app pub date -
Sep 22, 2005
filing date -
Sep 22, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A phrase extraction system combines a dictionary method, a statistical/heuristic approach, and a set of pruning steps to extract frequently occurring and interesting phrases from a corpus. The system finds the 'top k' phrases in a corpus, where k is an adjustable parameter. For a time-varying corpus, the system uses historical statistics to extract new and increasingly frequent phrases. The system finds interesting phrases that occur near a set of user-designated phrases. The system uses these designated phrases as anchor phrases to identify phrases that occur near the anchor phrases. The system finds frequently occurring and interesting phrases in a time-varying corpus is changing in time, as in finding frequent phrases in an on-going, long term document feed or continuous, regular web crawl.
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