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Apparatus and methods for an information retrieval system that employs natural language processing of search results to improve overall precision

  • US 5,933,822 A
  • Filed: 07/22/1997
  • Issued: 08/03/1999
  • Est. Priority Date: 07/22/1997
  • Status: Expired due to Term
First Claim
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1. Apparatus for use in an information retrieval system for retrieving stored documents from a repository, said system having a retrieval system, responsive to a query, for retrieving, from the repository, a plurality of stored documents related to the query so as to define an output document set;

  • said apparatus comprising;

    a processor; and

    memory having executable instructions stored therein; and

    wherein the processor, in response to the instructions stored in the memory;

    produces, in response to the query, a first logical form therefor, wherein the first logical form portrays semantic relationships between words associated with the query;

    obtains a corresponding second logical form for each different one of the documents in the output document set, wherein the second logical form portrays semantic relationships between words associated with a phrase in said one document;

    ranks a plurality of the documents in the output document set as a predefined function of the first logical form of the query and the second logical form for each one of the plurality of documents in the output document set so as to define a rank order; and

    provides, as output and in said rank order, a plurality of stored entries associated with the output document set.

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