Information retrieval system and method
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Aug 31, 1995
filing date -
Sep 1, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A technique for evaluating the topicality of keywords assigned to references retrieved from a database, so that interesting topics may be extracted. Since the number of references containing a specific keyword increases at a certain time and then gradually decreases with the passage of time, the topicality of a keyword can be evaluated by quantifying this phenomenon. Keywords are sorted based on the value of their topicality and displayed either as a list or as a graph in which the level of topicality is displayed along the time axis.
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