Literature between the relationship analyzer, the program, and the method

摘要

PPROBLEM TO BE SOLVED: To provide an inter-document relation analyzing device clarifying transition of issues between the issues to which documents belong based on citation relation, in a certain document set. PSOLUTION: A document cited by each document data is extracted from the document set, and a chaining citation relation is determined by generating citation relation information where citing documents are related to cited documents. Based on the citation relation, for each document, the document and the other document included in the citation relation of the former document are stored as a citation chain document set. From the citation chain document set and the issue of each document, documents that do not belong to the same citation chain document set and are associated with the same issue are unified in the same issue group. The transition information on the issues between respective issue groups is set based on the citation relation between the documents belonging to each issue group obtained by unification and the documents belonging to the other issue group, and the transition of the issues between respective issue groups is output based on the set issue transition information. PCOPYRIGHT: (C)2011,JPO&INPIT