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Method and system for ensuring robustness in natural language understanding

  • US 7,016,827 B1
  • Filed: 09/03/1999
  • Issued: 03/21/2006
  • Est. Priority Date: 09/03/1999
  • Status: Expired due to Term
First Claim
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1. A method for ensuring robustness of a natural language understanding (NLU) system comprising the steps of:

  • tagging recognized words of a command input to the NLU system to associate the command with a context;

    translating the command to at least one formal command based on the tagged words;

    determining a top ranked formal command based on scoring of the tagged recognized words and scoring translations of the at least one formal command;

    determining whether the top ranked formal command is accepted by comparing a feature vector of the top ranked formal command to representations of feature vectors stored in an accept model; and

    executing the top ranked formal command if accepted and preventing incorrect commands from execution to provide a robust NLU system.

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