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System and method for aggregating ranking results from various sources to improve the results of web searching

  • US 7,188,106 B2
  • Filed: 04/30/2002
  • Issued: 03/06/2007
  • Est. Priority Date: 05/01/2001
  • Status: Active Grant
First Claim
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1. A computer-implemented method for aggregating rankings comprising:

  • constructing an initial aggregated ranking from a plurality of source rankings;

    for each element of the plurality of source rankings;

    a) computing a distance measure comparing a plurality of source rankings output by at least one search engine that has incorrectly estimated the relevance of at least one web page;

    b) altering elements in an altered aggregated ranking to minimize said distance measure, wherein an element is inserted into said altered aggregated ranking only if(1) there exists a majority among said source rankings that prefers said element to a lowest-ranked element in said altered aggregated ranking; and

    (2) there exists a majority among said source rankings that prefers said element to all successors of said lowest-ranked element in said altered aggregated ranking; and

    outputting the altered aggregated ranking after each element is processed and said altering ends.

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