CITATION RELATION EXTRACTION SYSTEM, CITATION RELATION EXTRACTION METHOD, AND CITATION RELATION EXTRACTING PROGRAM

摘要

PPROBLEM TO BE SOLVED: To extract an implicit citation relation in a content, and to enhance the precision of implicit citation relation extraction. PSOLUTION: This citation relation extraction system, this citation relation extraction method and this citation relation extracting program calculate a degree of citation indicating a degree of possibility of citation made between the contents, based on a difference of preparation, updating or reference time between contents, and based on a degree of relation between writers who have prepared, updated or cited the content. The citation relation extraction system, the citation relation extraction method and the citation relation extracting program extract the citation relation between the contents, based on the calculated degree of citation. PCOPYRIGHT: (C)2009,JPO&INPIT