COMPOSITE DOCUMENT RETRIEVAL SYSTEM, COMPOSITE DOCUMENT RETRIEVAL METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To retrieve a composite document matching a retrieval request from a user while using an index formed with element documents constituting each composite document as a unit. SOLUTION: A full text index storage part 12 stores the index formed with element documents constituting each composite document as a unit. An extraction part 160 extracts a plurality of character strings connected by a logic symbol from a retrieval word designated by the retrieval request from the user. A full text retrieval engine 17 retrieves element documents containing each of the plurality of extracted character strings using the index stored in the full text retrieval index storage part 12. A component evaluation mechanism 18 specifies composite documents containing the element documents retrieved by the full text retrieval engine 17, based on component relevant information, and acquires a composite document satisfying a logic condition shown by the logic symbol of the specified composite documents as a retrieval result to the retrieval request. COPYRIGHT: (C)2007,JPO&INPIT