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Question-answering method and question-answering apparatus

  • US 7,236,968 B2
  • Filed: 01/29/2004
  • Issued: 06/26/2007
  • Est. Priority Date: 09/12/2003
  • Status: Expired due to Fees
First Claim
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1. A method implemented by a program being executable by a processor for a question-answering apparatus having communication equipment, a storage for storing a plurality of reply examples and a CPU for performing a reply composition process of replying to the question document by using a reply example selected from the plurality of reply examples, the method comprising the steps of:

  • receiving an input of a question document into said communication equipment;

    storing in said storage important part keyword frequency information of a keyword of a reply example having an important part, and unimportant part keyword frequency information of a keyword of a reply example having an unimportant part;

    dividing said input question document into a plurality of areas;

    extracting a plurality of areas from said input question document;

    obtaining a likelihood value of a question content corresponding to each of said plurality of stored reply examples for each of said plurality of areas, by using said reply example keyword frequency information;

    combining said plurality of areas to provide one or a plurality of important parts in accordance with said likelihood value of said plurality of reply examples obtained for each of said plurality of areas;

    calculating an importance degree of each of said plurality of areas by using said important part keyword frequency information;

    extracting as an important area an area having said calculated importance degree larger than a predetermined threshold value to obtain a reply example candidate corresponding to said important part by using the plurality of stored reply examples.

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