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Apparatus for retrieving information using reference reason of document

  • US 7,197,697 B1
  • Filed: 06/15/2000
  • Issued: 03/27/2007
  • Est. Priority Date: 06/15/1999
  • Status: Expired due to Fees
First Claim
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1. A reference reason identifying apparatus, comprising:

  • a reference feature/reference reasons correspondence table indicating correspondence between contexts of character strings and reference reasons;

    a referred document extracting device extracting document information about a referred document from given document data;

    a reference position extracting device extracting information about a position where the referred document is cited in the document data, and a character string in the neighborhood of the position;

    an identification device obtaining a context of an extracted character string by performing language analysis of the extracted character string, and identifying a reason indicating why the referred document is cited by retrieving the reason from the reference feature/reference reason correspondence table using the context of the extracted character string as a reference feature, the reason including at least one of answer, application, basic, contraposition, human, related work, review, software, technique, weak correlation and similar; and

    an output device outputting output information including the information extracted by the referred document extracting device and the reason why the referred document is cited.

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