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Dynamic natural language understanding

  • US 7,216,073 B2
  • Filed: 03/13/2002
  • Issued: 05/08/2007
  • Est. Priority Date: 03/13/2001
  • Status: Expired due to Fees
First Claim
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1. A method for use in a method for understanding a natural language text, comprising performing the following selectively in a statistical manner:

  • attempting to extract at least one value belonging to a semantic category from a natural language text or a form thereof; and

    if a result of said attempting complies with a predetermined criterion, attempting to extract, based on said result, at least one value belonging to another semantic category of a different hierarchical level than said semantic category, else performing at least one action from a group of actions including;

    asking a submitter of said text a question whose content depends on said result and giving up on understanding said natural language text;

    wherein said attempting to extract at least one value belonging to said another semantic category includes;

    developing at least one syntactic token based on at least one extracted value belonging to said semantic category;

    embedding said at least one syntactic token in at least one restatement of said text; and

    attempting to extract from said at least one restatement with embedded tokens or a form thereof at least one value belonging to said another semantic category.

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