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DETECTION OF NON-OCCURRENCES OF EVENTS USING PATTERN MATCHING

  • US 20100057737A1
  • Filed: 08/26/2009
  • Published: 03/04/2010
  • Est. Priority Date: 08/29/2008
  • Status: Abandoned Application
First Claim
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1. A computer-readable storage medium storing a plurality of instructions for controlling a processor to process a data stream of events, the plurality of instructions comprising:

  • instructions that cause the processor to receive a query for detecting non-occurrence of a first event within a time period following occurrence of a second event, the query specifying a pattern;

    instructions that cause the processor to generate a modified pattern by adding a first symbol to the pattern;

    instructions that cause the processor to generate an automaton for the query based upon the modified pattern; and

    instructions that cause the processor to detect an instance in the data stream of non-occurrence of the first event within the time period following occurrence of the second event using the automaton.

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