QUERY PROVIDING DEVICE, QUERY PROVIDING METHOD, AND QUERY PROVIDING PROGRAM

摘要

PROBLEM TO BE SOLVED: To set it as a first problem to select a query to be recommended at a high speed.

SOLUTION: The query providing device: calculates a distance between keywords based on semantic similarity of the keywords; generates distance matrix data by which the distance between the keywords is searchable from the keywords, and stores it in storage means; hierarchically clusters the keywords using the distance matrix data; and stores a dendrogram constructed by the hierarchical clustering as a bottom-up index for performing a search from the lower layer to the upper layer.

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