CLASSIFICATION MODEL LEARNING METHOD, DEVICE, PROGRAM, AND REVIEW DOCUMENT CLASSIFYING METHOD

摘要

PROBLEM TO BE SOLVED: To properly classify whether documents are review documents or not, from the small amount of learning data.SOLUTION: A sentence dividing portion 22 divides each of a plurality of blog documents for learning which include review documents, in which information about a specified object is written, in a sentence unit. A morphological analyzing portion 23 performs morphological analysis processing to each sentence, and an identity extracting portion 24 extracts identities indicating characteristics of the sentence about each sentence of the blog documents for learning. A learning portion 25 uses each of the extracted identities about each sentence of the blog documents for learning which are the review documents as learning data of positive examples, and each of the extracted identities about each sentence of the blog documents for learning which are not the review documents as learning data of negative examples, thereby learning a classification model for classifying whether the inputted sentences are sentences in the review documents or not.