| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable representation and extraction of a phrase constituting a hidden condition for a search by using a phrase commonly used as a search query. <P>SOLUTION: A search condition extraction device includes: a browse information analysis part 250 for, using input query information used in executing a search, information on the search result and browse presence/absence information as inputs, dividing the search result information into phrases and accumulating appearance information of individual phrases to output the resultant to an appearance phrase buffer 260b; a candidate phrase extraction part 260 for analyzing information stored in the appearance phrase buffer 260b and outputting a phrase appearing meaningfully highly frequently, the phrase included in the browsed search result information, as a hidden condition candidate phrase to a candidate phrase buffer 270b; and a candidate phrase narrow-down part 270 for comparing, related to a candidate word included in the candidate phrase buffer 270b, the probability of the candidate word appearing with an input query word included in a search target database 220 with that of the aforementioned candidate word appearing with the input query information in a search query database 230, and outputting a phrase meaningfully frequently used as a search query to be a hidden condition phrase. <P>COPYRIGHT: (C)2013,JPO&INPIT |
