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System for dialog management

  • US 7,139,717 B1
  • Filed: 10/11/2002
  • Issued: 11/21/2006
  • Est. Priority Date: 10/15/2001
  • Status: Active Grant
First Claim
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1. A spoken dialog system for communicating with a user, the spoken dialog system comprising an automatic speech recognition module, a spoken language understanding module, a dialog manager module, and a text-to-speech module, wherein the dialog manager module:

  • receives user input through a spoken dialog between the spoken dialog system and a user;

    uses the user input to select a dialog motivator from a plurality of dialog motivators, the plurality of dialog motivators including an assumption dialog motivator and a confirmation dialog motivator; and

    when the spoken dialog system requests further user input and invokes the confirmation dialog motivator to confirm the further user input, the dialog manager module;

    receives the further user input; and

    if a confidence value associated with understanding the further user input is below a threshold value, invokes the assumption dialog motivator to present assumed further user input during a confirmation dialog.

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