Search query analyzer, search query analysis method, and program

摘要

search query analyzer according to the present invention 1 is classified into a plurality of search queries group in chronological order a plurality of search queries entered by the user, among the plurality of search queries groups, inputted to purchase just before the user and purchase search query group including search queries, the search query classification unit 13 that identifies the first search query group entered before the purchase search query group, the keyword from description of purchased commodity purchased by the user includes a keyword extracting unit 12 for extracting a group, calculates the similarity between the first search query group and the keyword group, and a search query group extracting unit 14 for extracting a first search query group is lower than the similarity is a threshold value ing.