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Computing the relevance of a document to concepts not specified in the document

  • US 9,710,570 B2
  • Filed: 07/14/2014
  • Issued: 07/18/2017
  • Est. Priority Date: 07/14/2014
  • Status: Active Grant
First Claim
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1. A computer program product for conceptual analysis of a document, the computer program product comprising:

  • a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit to perform a method comprising;

    accessing a concept graph that includes a plurality of nodes and edges, each node representing a concept and each edge representing a known relation between two concepts; and

    computing a relevance of the document to concepts in the concept graph, the computing comprising;

    receiving a priori information about the document including concepts extracted from the document, probabilities of each of the concepts extracted from the document being located in a pool of concepts extracted from the document, and confidence scores corresponding to each of the concepts extracted from the document, wherein the concepts extracted from the document include a subset of the concepts in the concept graph; and

    combining the a priori information and the concept graph to generate a posteriori information that includes a reverse index that indicates a likelihood that the document is related to each of the concepts in the concept graph, the reverse index accessible to a computer system for determining a relevance of the document to a query received from an agent external to the computer system,the combining including calculating a relevance of the document to concepts in the graph not extracted from the document based on a degree of association in the concept graph between the concepts extracted from the document and the concepts in the graph not extracted from the document.

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