METHODS AND APPARATUS TO PERFORM IDENTITY MATCHING ACROSS AUDIENCE MEASUREMENT SYSTEMS
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Abstract
Methods, apparatus, systems and articles of manufacture to perform identity matching across audience measurement systems are disclosed. An example apparatus includes a data normalizer to normalize audience measurement events corresponding to media exposure data obtained from a first audience measurement system and a second audience measurement system, a tree builder to build a k-dimensional tree based on normalized audience measurement events, a candidate identifier to calculate a distance between a query event and a first audience measurement event included in a search space in the k-dimensional tree, identify the query event and the first audience measurement event as a candidate match when the calculated distance satisfies a distance threshold, an array builder to generate metrics at an identifier-level based on a plurality of candidate matches, and a thresholder to identify an identifier mapping linking a first user identifier to a second user identifier when the metrics satisfy respective metric thresholds.
4 Citations
21 Claims
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1. (canceled)
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2. An apparatus to perform identity matching, the apparatus comprising:
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memory including machine readable instructions; and processor circuitry to execute the instructions to; build a data structure based on normalized audience measurement events corresponding to a first audience measurement system, the data structure including a plurality of search spaces; identify a search space in the data structure based on a query event corresponding to a second audience measurement system; determine the query event and a first audience measurement event in the search space are a candidate match when a distance between the query event and the first audience measurement event satisfies a threshold; and link a first user identifier associated with the first audience measurement system to a second user identifier associated with the second audience measurement system based on a plurality of candidate matches. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A method to perform identity matching, the method comprising:
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building, by executing an instruction with the processor, a data structure based on normalized audience measurement events corresponding to a first audience measurement system, the data structure including a plurality of search spaces; identifying, by executing an instruction with the processor, a search space in the data structure based on a query event corresponding to a second audience measurement system; determining, by executing an instruction with the processor, the query event and a first audience measurement event in the search space are a candidate match when a distance between the query event and the first audience measurement event satisfies a threshold; and linking, by executing an instruction with the processor, a first user identifier associated with the first audience measurement system to a second user identifier associated with the second audience measurement system based on a plurality of candidate matches. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A tangible computer readable storage medium comprising instructions that, when executed, cause a machine to at least:
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build a data structure based on normalized audience measurement events corresponding to a first audience measurement system, the data structure including a plurality of search spaces; identify a search space in the data structure based on a query event corresponding to a second audience measurement system; determine the query event and a first audience measurement event in the search space are a candidate match when a distance between the query event and the first audience measurement event satisfies a threshold; and link a first user identifier associated with the first audience measurement system to a second user identifier associated with the second audience measurement system based on a plurality of candidate matches. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification