Information retrieval system and method

Details Information retrieval system and method Information retrieval system and method

1995-08-31

1998-03-24

Black, Thomas G.

395601, 395606, 395603, G06F 1730

Patent

active

057322600

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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Sakakibara, Text Classification and Keyword Extraction ny Learning Decision Trees, IEEE, p. 466 Mar. 1993.

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