SEARCH FORMULA UPDATE DEVICE, SEARCH FORMULA UPDATE METHOD

摘要

Disclosed is a search formula update device capable of updating with high precision a search formula specifying an element of a structured document according to modifications of structure and content. The search formula update device is provided with a partial structure extraction unit for extracting a partial structure from structure information; a partial structure detection unit for detecting, among the extracted partial structures, partial structures constituting the structure of the post-update structured document; a structure reconstitution unit for combining the detected partial structures to reconstitute structure information of the post-update structured document; an objective element estimation unit for estimating an objective element in the post-update structured document on the basis of the detected partial structures and a search formula; and a search formula update unit for using the reconstituted structure information so as to specify the objective element in the post-update structured document to generate a search formula.