The Nielsen Comapny (us), LLC

Furqan Hanif

Diane Morovati Lopez

Jake Ryan Dailey

Chris Nicotra

Christine Pierce

Jose Mortensen

Matthew Vanlandeghem

An example apparatus disclosed herein includes at least one memory, instructions, and at least one processor to execute the instructions to: receive first HyperLogLog (HLL) data from a first server of a first database proprietor and second HyperLogLog (HLL) data from a second server of a second database proprietor, the first HLL data including obfuscated first user impression data and the second HLL data including obfuscated second user impression data; generate union HLL data based on the first HLL data from the first database proprietor and the second HLL data from the second database proprietor by performing a union of data sets of the obfuscated first user impression data represented in the first HLL data and the obfuscated second user impression data represented in the second HLL data; and determine a total number of deduplicated unique audience members based on the union HLL data generated by the vector analyzer.

Methods and apparatus to determine a unique audience for internet-based media

Methods, apparatus, systems and articles of manufacture are disclosed to generate measures of unique audiences for Internet-based media. An example apparatus disclosed herein includes at least one memory, instructions, and at least one processor. The processor to execute the instructions to: receive first HyperLogLog (HLL) data from a first server of a first database proprietor and second HyperLogLog (HLL) data from a second server of a second database proprietor, the first HLL data including obfuscated first user impression data and the second HLL data including obfuscated second user impression data; generate union HLL data based on the first HLL data from the first database proprietor and the second HLL data from the second database proprietor by performing a union of data sets of the obfuscated first user impression data represented in the first HLL data and the obfuscated second user impression data represented in the second HLL data; and determine a total number of deduplicated unique audience members based on the union HLL data generated by the vector analyzer.

Methods, apparatus, systems and articles of manufacture are disclosed to generate measures of unique audiences for Internet-based media. An example method disclosed herein includes a salt generator to generate a shared salt at a first database proprietor, a database proprietor interface to the shared salt to a second database proprietor, a Hyperloglog (HLL) generator to generate a first hash vector at the first database proprietor based on the shared salt and first user impression data associated with media, the first hash vector to obfuscate first personally identifiable information of first subscribers of the first database proprietor and an AME interface to send the first hash vector to a database containing a second hash vector, the second hash vector generated by the second database proprietor using second user impression data and the shared salt, the second hash vector to obfuscate second personally identifiable information of second subscribers of the second database proprietor, the first hash vector and the second hash vector to enable a third party to a deduplicate audience size corresponding to the first user impression data and the second user impression data.

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Tampa, FL, United States of America

Furqan Hanif