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Enhanced document retrieval

  • US 7,289,985 B2
  • Filed: 04/15/2004
  • Issued: 10/30/2007
  • Est. Priority Date: 04/15/2004
  • Status: Expired due to Fees
First Claim
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1. A method implemented by a computing device for enhanced document retrieval, the method comprising:

  • receiving a search query from an end-user;

    responsive to receiving the search query, retrieving search results, the search results comprising an enhanced document and a set of non-enhanced documents, the enhanced document and the non-enhanced documents including terms) of the search query;

    wherein the enhanced document is derived from a base document, the base document having been modified with metadata mined from one or more different documents, the metadata being associated with one or more respective references to the base document, the metadata including one or more of a title of a document, product problem context, and a product problem resolution information, the one or more different documents being independent of the base document;

    calculating term proximity to determine relevance of the enhanced document as follows;

    Sim = Sim orig * proximity ,

    proximity = log

    ( 1 + α



    ( β

    * Hit
    + ( 1 - β

    )
    * ( 1 - EditDistance )
    )
    )
    log

    ( 1 + α

    )
    ,
    wherein α

    , β

    are parameters configured to control relative weight of each part of the search query, Hit represents a percentage of the terms in a document in a database over all terms, the database comprising the one or more documents, and EditDistance represents a misorder between the search query and the document; and

    returning ranked search results for presentation to the end-user, the ranked search resulting being ranked as a function of the relevance.

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