STATISTICAL RECORD LINKAGE CALIBRATION FOR MULTI TOKEN FIELDS WITHOUT THE NEED FOR HUMAN INTERACTION
First Claim
1. A computer implemented iterative process 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, each field value comprising at least one token, wherein at least a portion of parameters for the record matching formula are configured for a first particular field value and a non-identical second particular field value, the first particular field value and a second particular field value associated with a selected field, the first particular field value comprising a plurality of particular tokens, wherein the process provides for linking records and entity representations with non-identical field values, the process comprising:
- calculating, for each of the plurality of particular tokens, an associated token weight, each token weight reflecting a likelihood that an arbitrary record in the database comprises the associated particular token in the selected field of the arbitrary record;
calculating a field value weight, the field value weight reflecting a likelihood that an arbitrary record in the database comprises the first particular field value in the selected field of the arbitrary record;
calculating a blended field value weight for the first particular field value and the second particular field value, the blended field value weight for the first particular field value and the second particular field value being derived from at least the token weights associated with each of the plurality of particular tokens and from the field value weight;
forming a plurality of entity representations in the database, each entity representation comprising at least two records linked using a first instance of the record matching formula, at least one entity representation comprising a first record comprising the first particular field value and a second record comprising the second particular field value, the first record linked to the second record using a first instance of the record matching formula that comprises the blended field value weight;
calculating, for each of the plurality of particular tokens, an associated revised token weight, each revised token weight reflecting a likelihood that an arbitrary entity representation in the database comprises a record comprising the associated particular token;
calculating a revised field value weight, the revised field value weight reflecting a likelihood that an arbitrary entity representation in the database comprises the first particular field value in the selected field of a record comprising the arbitrary entity representation;
calculating a revised blended field value weight for the first particular field value and the second particular field value, the revised blended field value weight for the first particular field value and the second particular field value being derived from at least the revised token weights associated with each of the plurality of particular tokens and from the revised field value weight;
linking at least two entity representations in the database based on a second instance of the record matching formula, wherein the second instance of the record matching formula comprises the revised blended field value weight, whereby a number of entity representations in the database is reduced by the linking at least two entity representations relative to a number of entity representations in the database prior to the linking at least two entity representations; and
retrieving information from at least one record in the database.
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Accused Products
Abstract
Disclosed is a system for, and method of, calculating parameters used to determine whether records and entity representations should be linked. The system and method utilize blended field weights to account for certain types of partial matches. The system and method apply iterative techniques such that parameters from each linking iteration are used in the next linking iteration. The system and method need no human interaction in order to calibrate and utilize record matching formulas used for the linking decisions.
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Citations
11 Claims
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1. A computer implemented iterative process 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, each field value comprising at least one token, wherein at least a portion of parameters for the record matching formula are configured for a first particular field value and a non-identical second particular field value, the first particular field value and a second particular field value associated with a selected field, the first particular field value comprising a plurality of particular tokens, wherein the process provides for linking records and entity representations with non-identical field values, the process comprising:
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calculating, for each of the plurality of particular tokens, an associated token weight, each token weight reflecting a likelihood that an arbitrary record in the database comprises the associated particular token in the selected field of the arbitrary record; calculating a field value weight, the field value weight reflecting a likelihood that an arbitrary record in the database comprises the first particular field value in the selected field of the arbitrary record; calculating a blended field value weight for the first particular field value and the second particular field value, the blended field value weight for the first particular field value and the second particular field value being derived from at least the token weights associated with each of the plurality of particular tokens and from the field value weight; forming a plurality of entity representations in the database, each entity representation comprising at least two records linked using a first instance of the record matching formula, at least one entity representation comprising a first record comprising the first particular field value and a second record comprising the second particular field value, the first record linked to the second record using a first instance of the record matching formula that comprises the blended field value weight; calculating, for each of the plurality of particular tokens, an associated revised token weight, each revised token weight reflecting a likelihood that an arbitrary entity representation in the database comprises a record comprising the associated particular token; calculating a revised field value weight, the revised field value weight reflecting a likelihood that an arbitrary entity representation in the database comprises the first particular field value in the selected field of a record comprising the arbitrary entity representation; calculating a revised blended field value weight for the first particular field value and the second particular field value, the revised blended field value weight for the first particular field value and the second particular field value being derived from at least the revised token weights associated with each of the plurality of particular tokens and from the revised field value weight; linking at least two entity representations in the database based on a second instance of the record matching formula, wherein the second instance of the record matching formula comprises the revised blended field value weight, whereby a number of entity representations in the database is reduced by the linking at least two entity representations relative to a number of entity representations in the database prior to the linking at least two entity representations; and retrieving information from at least one record in the database. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer system for iteratively 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, each field value comprising at least one token, wherein at least a portion of parameters for the record matching formula are configured for a first particular field value and a non-identical second particular field value, the first particular field value and a second particular field value associated with a selected field, the first particular field value comprising a plurality of particular tokens, wherein the process provides for linking records and entity representations with non-identical field values, the system comprising:
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a computer implemented database comprising a plurality of records, each record comprising a plurality of fields, each field capable of containing a field value, each field value comprising at least one token; a processor programmed to calculate, for each of the plurality of particular tokens, an associated token weight, each token weight reflecting a likelihood that an arbitrary record in the database comprises the associated particular token in the selected field of the arbitrary record; a processor programmed to calculate a field value weight, the field value weight reflecting a likelihood that an arbitrary record in the database comprises the first particular field value in the selected field of the arbitrary record; a processor programmed to calculate a blended field value weight for the first particular field value and the second particular field value, the blended field value weight for the first particular field value and the second particular field value being derived from at least the token weights associated with each of the plurality of particular tokens and from the field value weight; a processor programmed to form and store a plurality of entity representations in the database, each entity representation comprising at least two records linked using a first instance of the record matching formula, at least one entity representation comprising a first record comprising the first particular field value and a second record comprising the second particular field value, the first record linked to the second record using a first instance of the record matching formula that comprises the blended field value weight; a processor programmed to calculate, for each of the plurality of particular tokens, an associated revised token weight, each revised token weight reflecting a likelihood that an arbitrary entity representation in the database comprises a record comprising the associated particular token; a processor programmed to calculate a revised field value weights the revised field value weight reflecting a likelihood that an arbitrary entity representation in the database comprises the first particular field value in the selected field of a record comprising the arbitrary entity representation; a processor programmed to calculate a revised blended field value weight for the first particular field value and the second particular field value, the revised blended field value weight for the first particular field value and the second particular field value being derived from at least the revised token weights associated with each of the plurality of particular tokens and from the revised field value weight; and a processor programmed to link and store at least two entity representations in the database based on a second instance of the record matching formula, wherein the second instance of the record matching formula comprises the revised blended field value weight, whereby a number of entity representations in the database is reduced by linking the at least two entity representations relative to a number of entity representations in the database prior to the linking at least two entity representations. - View Dependent Claims (8, 9, 10, 11)
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Specification