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System and method for dynamically determining the attitude of an author of a natural language document

  • US 7,369,985 B2
  • Filed: 02/11/2003
  • Issued: 05/06/2008
  • Est. Priority Date: 02/11/2003
  • Status: Expired due to Fees
First Claim
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1. A method for adaptively analyzing a natural language document containing at least one lexical item, said analysis to determine an attitude of an author towards an entity, comprising:

  • determining at least one actual valence for the at least one lexical item by analyzing the at least one lexical item in context;

    determining the attitude based on the at least one actual valence;

    associating the author, the entity and the attitude;

    wherein the at least one lexical item encodes attitude information about the entity;

    determining at least one base valence for the at least one lexical item; and

    wherein analyzing the at least one lexical item includes adjusting the at least one base valence based on a contextual valence shifter (CVS) which can have a negative impact on the at least one base valence if the consequences of a not born-out expectation are negative and can have a positive impact on the at least one base valence if the consequences of the not born-out expectation are positive.

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