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System for handling frequently asked questions in a natural language dialog service

  • US 7,197,460 B1
  • Filed: 12/19/2002
  • Issued: 03/27/2007
  • Est. Priority Date: 04/23/2002
  • Status: Expired due to Fees
First Claim
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1. A spoken language understanding module comprising:

  • logic for performing spoken language understanding; and

    logic for handling frequently asked questions, the logic for handling frequently asked questions performing the steps of;

    classifying a user utterance;

    selecting a question and answer table from a plurality of question and answer tables for the classified user utterance;

    selecting a question from the selected question and answer table that is most similar to the user utterance using the following similarity computation;

    Sim

    ( Q , FAQ j )
    =

    i




    q i ·

    faq ji


    i


    (

    q i )
    2
    + c

    ( 0.5 )
    2
    ·



    i


    ( faq ji ) 2
    wherein the term faqji represents the questions in the question and answer table and the term qi represents the user utterance; and

    transmitting the selected question and associated answer to a dialog management module.

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