PROPER EXPRESSION EXTRACTION DEVICE, METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a proper expression extraction device capable of precisely extracting a labeled proper expression even when a proper expression is classified in a detailed category.SOLUTION: An extraction generation section calculates an extraction representing a feature in information in a word and a feature on a peripheral context of the word with respect to each word included in an input document based on an input document after morphological analysis. An individual model identification section identifies whether each word included in the input document is a proper expression given with a specific label based on the calculated extraction of each word using an identification model, which is previously learned for identifying whether the word is a proper expression given with the specific label, to extract a proper expression given with the specific label from the input document.