DOCUMENT GROUP ANALYSIS DEVICE

摘要

A document analysis device includes: a text data acquisition unit (101) for acquiring a plurality of technical documents; a document vector acquisition unit (102) for acquiring a weighting amount of each index word for each technical document acquired; a factor calculation unit (103) which uses the acquired technical documents as an examinee and the weighting amounts of the respective index words to perform factor analysis with the respective index words as observation variables, calculates a factor load amount for each of factors for each fo the index words, and calculates a factor point for each of factors for each of the technical documents; and an imputed factor decision unit (104) which decides an imputed factor of each index word by using the factor load amount of each index word and decides the imputed factor of each technical document by using the factor point of each technical document.This enables appropriate analysis of a plurality of documents, i.e., what kind of concepts or characteristics are contained in the document or the document group.