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System and method for enhancing speech recognition accuracy using weighted grammars based on user profile including demographic, account, time and date information

  • US 10,186,259 B2
  • Filed: 08/17/2017
  • Issued: 01/22/2019
  • Est. Priority Date: 12/19/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • dividing, via a processor and as part of a dialogue with a dialog system, a dialog turn into a first segment of the dialog turn and a second segment of the dialog turn, wherein the dialog turn is divided into the first segment and the second segment based on at least one of a first timing of a first probable user response and a second timing of a second probable user response;

    activating a first weighted grammar for the first segment to process first user speech received during the first segment, to yield a first activated weighted grammar, wherein the first weighted grammar is weighted based on a user profile which comprises one or more of information about a number called from, account information, a time of day, and a date;

    activating a second weighted grammar for the second segment of the dialog to process second user speech received during the second segment, to yield a second activated weighted grammar;

    recognizing the first user speech received during the first segment of the dialog using the first activated weighted grammar; and

    recognizing the second user speech received during the second segment of the dialog using the second activated weighted grammar.

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