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System and method for keyword spotting using representative dictionary

  • US 9,639,520 B2
  • Filed: 01/29/2014
  • Issued: 05/02/2017
  • Est. Priority Date: 01/29/2013
  • Status: Active Grant
First Claim
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1. A method comprising operations performed by a computer, the operations comprising:

  • holding a first dictionary comprising first textual phrases for searching in data;

    deriving from the first dictionary a second dictionary, which comprises second textual phrases and has a smaller data size than the first dictionary, such that occurrence of any of the first textual phrases in the data corresponds to the occurrence of at least one of the second textual phrases in the data;

    searching input data with the second dictionary; and

    in response to identifying in the input data a second textual phrase from the second dictionary, locating in the input data a first textual phrase from the first dictionary corresponding to the identified second textual phrase.

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