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Search engine that applies feedback from users to improve search results

  • US 8,185,523 B2
  • Filed: 03/17/2006
  • Issued: 05/22/2012
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. A computer-implemented method of ranking document returned in a results list in response to a search query, comprisingentering a search query;

  • displaying a results list of documents returned in response to the search query;

    receiving and storing input from the user indicating the relevance to the user of a document in the results list of documents;

    modifying the weight of previous input from the user indicating the relevance of the document to the user;

    associating the user input indicating the relevance to the user of the document in the results list with the search query and with the document;

    determining a relevance formula having variables and parameters, the relevance formula for computing a relevance score for the document and the search query, wherein the variables comprise a plurality of features, a feature of the plurality of features comprises one of;

    a frequency of occurrence of a term in the document, a frequency of hyperlinks containing a term in the document, and a frequency of occurrence of a term in an abstract of the document, and the parameters comprise a plurality of weighting factors corresponding to each of the features;

    ranking the document based on the relevance score, wherein the relevance score is dependent on the user input associated with the document and the search query; and

    presenting the ranked results list of documents to the user.

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