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System and method for providing question and answers with deferred type evaluation

  • US 8,332,394 B2
  • Filed: 05/23/2008
  • Issued: 12/11/2012
  • Est. Priority Date: 05/23/2008
  • Status: Active Grant
First Claim
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1. A computer-implemented method of generating answers to questions based on a corpus of data comprising the steps of:

  • receiving an input query;

    computing lexical answer types (LATs) for the input query;

    extracting candidate answers from the corpus;

    matching candidate answers to instances in a knowledge resource;

    matching instances to instance types in the knowledge resource;

    matching LATs to instance types in the knowledge resource;

    producing a type coercion score based on the matching steps, wherein the type coercion score reflects a degree that a candidate answer is coerced to a lexical answer type in order to eliminate the need for the lexical answer type to be part of a predetermined ontology; and

    returning a candidate answer based on the type coercion score.

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