DOCUMENT ANALYZER, DOCUMENT ANALYZING PROGRAM AND DOCUMENT ANALYZING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a document analyzer capable of precisely analyzing a range of noun phrase in a sentence.SOLUTION: The document analyzer has an analysis unit 50 which includes: a noun phrase candidate extraction section 22 that extracts a word group which appears plural times in a document as a noun phrase candidate character string; and a consistency operation section 29 that extracts construction samples which are similar to plural sentences including the noun phrase candidate character string from plural construction samples included in an analyzed construction corpus 40 and determines with respect to the plural sentences whether or not the extraction of the noun phrase candidate character string is made correctly on the basis of the extracted construction sample.