PROBLEM TO BE SOLVED: To easily perform processing such as retrieval at high speed by dividing information regarding a multilanguage document by language so as to manage the information and quickly accessing each information. ;SOLUTION: A multilanguage document processor has a registered character string language discriminating part 11 for discriminating multilanguage document data by each language, an index by language preparation part 12 for preparing an index of the multilanguage document data by language, a retrieval/storage part 13 by language for storing retrieval data into the storage area provided for each language, an entity storage part 14 for storing entity data of the multilanguage document, a retrieval character string language discriminating part 15 for discriminating a retrieval character string inputted at the time of retrieval, a retrieval character string index by language preparation part 16 for preparing the index of the retrieval character string by language, an index collating part by language 17 which performs retrieval by collating the index of the retrieval character string by language with the index of the registered multilanguage document by language, and an entity extraction part 18 for extracting the entity data of the multilanguage data on the basis of the retrieval result. The device stores the index or the like of the multilanguage document data by languages and manages them.;COPYRIGHT: (C)2001,JPO
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