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STATISTICAL RECORD LINKAGE CALIBRATION FOR GEOGRAPHIC PROXIMITY MATCHING

  • US 20110191353A1
  • Filed: 01/31/2011
  • Published: 08/04/2011
  • Est. Priority Date: 01/29/2010
  • Status: Active Grant
First Claim
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1. A method for generating entity representations in a computer implemented database using a record matching formula and for generating parameters for the record matching formula, the database comprising a plurality of records, each record comprising a plurality of fields, each field capable of containing a field value, wherein at least a portion of parameters for the record matching formula are generated using a symmetric and reflexive function and configured for a particular field value appearing in a selected field of at least one record, and wherein the process provides for linking records or entity representations with non-identical field values, the method comprising the steps of:

  • forming a notional grid over a geographic area of interest that contains a plurality of points, wherein the geographic area of interest comprises a plurality of squares and wherein each of the plurality of points is associated with one of the plurality of records in the database that contains absolute geographic location information;

    calculating a plurality of match probabilities, wherein each match probability reflects a likelihood that an arbitrary point in the geographic area of interest lies within a distance of a square within which the arbitrary point lies as determined by the symmetric and reflexive function;

    calculating a plurality of match weights based on the plurality of match probabilities;

    linking at least two entity representations in the database based on one or more of the plurality of match weights using the record matching formula; and

    retrieving information from at least one record in the database.

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