By showing information that can infer the search intent, it will be possible to develop products and create Web pages that match the search intent.;A search needs evaluation apparatus acquires a plurality of document data and converts the contents or the structure of the plurality of document data into feature vector data. The search needs evaluation apparatus performs a process on the feature vector data according to a predetermined statistical identification algorithm, and classifies a plurality of document data into a plurality of subsets. The search needs evaluation apparatus outputs the analysis result of the property of search needs based on the relationship between a plurality of subsets.
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