METHOD AND DEVICE FOR CLASSIFYING DOCUMENT AND RECORDING MEDIUM WITH PROGRAM RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To provide a document classifying method and a document classifying device which attach a sentence structure that correctly accompanies a semantic attribute and can perform classification including the intention of a document implementor even to a sentence that does not undergo proofreading and a sentence whose quality is low. SOLUTION: When an inputting means 11 inputs a document, a morpheme analyzing means 12 divides it into morphenes. A corpus learning means 13 learns the characteristic of a semantic attribute on the basis of the frequency of morphological information from a context in which the semantic attribute appears from a stored document which is stored in a corpus 18 and to which the morphological information and the semantic attribute are preliminarily attached. A semantics attaching means 14 attaches the semantic attribute having the characteristic on the basis of the frequency of the most analogous morphological information. A similarity calculating means 15 obtains similarity obtained by considering the semantic attribute of stored document stored in the corpus 18 and the inputted document. A classifying means 16 classifies the inputted document into categories existing in the stored document with the high similarity in the corpus 18.