Synonym dictionary generation device, data analyzer, data detection device, synonym dictionary generation method and synonym dictionary generation program

摘要

PROBLEM TO BE SOLVED: To provide a synonym dictionary generation device and the like capable of detecting a synonym using words contained in a plurality of different texts, having versatility and capable of widely defining the synonym.SOLUTION: A document analysis system 100, while extracting a set of an evaluation expression text indicating an evaluation expression, and a modified word text modified by the evaluation text as a text set from each of questionnaire data acquired via an input interface 110, defines a synonym based on the number of frequencies of appearance of the evaluation expression text, category information and the modified word text.