RELATED WORD CLASSIFICATION DEVICE, COMPUTER PROGRAM, AND METHOD FOR CLASSIFYING RELATED WORD

摘要

PROBLEM TO BE SOLVED: To extract related words while discriminating words used properly according to different purposes, even when the words subject to be classified are structured data such as database definitions.;SOLUTION: A word classification unit 60 optimizes a model parameter for discriminating a class of a word on the basis of a provisional correct answer class allocated to the word appearing in data. The word classification unit 60 selects a maximum likelihood class in classes satisfying a restriction relating to the class allocation on the basis of a likelihood of the class obtained by using a current model parameter, and allocates it to the word as a new provisional correct answer class. The word classification unit 60, after alternately and iteratively processing the two steps, extracts words classified in the same class as the related words.;COPYRIGHT: (C)2013,JPO&INPIT