QUERY RECOMMENDATION APPARATUS, QUERY RECOMMENDATION METHOD AND QUERY RECOMMENDATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a query recommendation apparatus which is capable of recommending a number of queries.;SOLUTION: A query recommendation apparatus includes a retrieval query storage section 107 which stores a click log with respect to a retrieval query of a retrieval service, a query related log extraction section 101 which extracts from the click log the ranking of query groups related to a target query, clicked URL groups, click times of URLs and retrieval results of URLs, a click graph creation section 102 which creates a click graph on the basis of the extracted information, a skip graph creation section 104 which creates a skip graph, a click graph feature amount extraction section 103 which calculates a feature amount representing a relationship among all the queries on the click graph, a skip graph feature amount extraction section 105 which calculates a feature amount representing a relationship among all the queries on the skip graph, and a feature amount combination section 106 which calculates an inter-query feature amount by combining the calculated two feature amounts.;COPYRIGHT: (C)2012,JPO&INPIT