DOCUMENT SUMMARY DEVICE, CONTROL METHOD OF DOCUMENT SUMMARY DEVICE, CONTROL PROGRAM OF DOCUMENT SUMMARY DEVICE AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To make a more accurate summary in response to respective fields even when an appearing frequency is low in a sentence of an important word in the respective fields. SOLUTION: A sentence vector forming part 14 forms a sentence vector of the sentence for constituting a summary object sentence, and outputs the vector to a sentence vector forming part and an important sentence forming part. The sentence vector forming part 15 forms the sentence vector corresponding to the summary object sentence on the basis of the sentence vector, and outputs the vector to a sentence vector comparing part 16. The sentence vector comparing part 16 extracts an important sentence from the summary object sentence on the basis of the sentence vector, a characteristic vector and a sentence vector in accordance with the fields. As a result of these, a summary sentence output part 13 forms and outputs a summary sentence from the important sentence.