Patent ID: 8060365

Claim:
A dialog processing system comprising: an utterance pattern input unit for inputting an utterance pattern which is an utterance structure derived from contents of field-independent general conversations; an utterance data input unit for inputting a plurality of utterance data obtained by converting contents of a plurality of conversations in one field into a text format; a target expression data extraction unit for extracting a plurality of target expression data from the plurality of utterance data inputted by the utterance data input unit, the target expression data each including a pattern matching portion which matches any of the utterance pattern inputted by the utterance pattern input unit; a feature extraction unit for retrieving each of the pattern matching portions from the plurality of target expression data extracted by the target expression data extraction unit, and then for extracting a feature quantity common to some of the plurality of pattern matching portions; and a mandatory data extraction unit for extracting mandatory data in the one field by use of the feature quantities extracted by the feature extraction unit, the mandatory data included in the plurality of utterance data inputted by the utterance data input unit.