COMPUTER PROGRAM, RELATED TERM EXTRACTION DEVICE, RELATED TERM EXTRACTION SYSTEM, AND RELATED TERM EXTRACTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a computer program, a related term extraction device, a related term extraction system and a related term extraction method by which related terms can highly precisely be extracted.

SOLUTION: A word string extraction part 341 segments a word from document aggregates of document databases 211 to 231. A sequence set extraction part 342 extracts a set of keywords relating to an appearing sequence as a sequence set on the basis of a keyword included in the extracted word string. A candidate set extraction part 343 extracts a keyword set in which the same keyword appears in the vicinity as a candidate set on the basis of the extracted sequence set. A related term set extracting part 344 calculates a prescribed determination measure for the extracted candidate set, determines whether to be a related term on the basis of a calculated result and finally finds an aggregate of related term sets.

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