PROCESSING DEVICE, PROCESSING METHOD, PROGRAM, AND RECORDING MEDIUM

摘要

An acquirer acquires, for the on-the path categories situated on the path from the topmost category of a hierarchical structure comprising categories into which products or serves are classified to each of a category of interest and the categories immediately below the category of interest, the frequencies of the names of the on-the-path categories and a keyword co-occurring in a search query given to a search device. An identifier identifies the category of interest as a category candidate immediately above a category of which the name is given by the keyword when the frequencies acquired for the on-the-path categories satisfy a candidate condition associated by the search device.

主权项

1. A processing device of which processing objects are categories contained in a hierarchical structure comprising categories into which products or services are classified and a keyword, comprising:
an acquirer that acquires, for each category contained in the hierarchical structure, a frequency of the name of the category and the keyword co-occurring in a search query given to a search device; and an identifier that, when at least a part of the distribution of the acquired frequencies in the hierarchical structure is in conformity with at least one predetermined distribution pattern that is based on a sequence of frequencies within the hierarchical structure, identifies the position in the hierarchical structure of a category of which the name is given by the keyword based on the conformed part in the hierarchical structure and the position, in the sequence of frequencies occurring in the distribution pattern, pre-associated with the distribution pattern.