CPC H04N 21/2407 (2013.01) [G06F 16/2255 (2019.01); H04N 21/254 (2013.01); H04N 21/25891 (2013.01); H04N 21/4126 (2013.01); H04N 21/4394 (2013.01); H04N 21/44008 (2013.01); H04N 21/44224 (2020.08); H04N 21/6543 (2013.01); H04N 21/812 (2013.01); H04N 21/4113 (2013.01)] | 21 Claims |
1. An apparatus comprising:
at least one memory;
machine-readable instructions; and
at least one processor to execute the machine-readable instructions to at least:
after a determination that a first candidate media device asset is a syndicated duplicate of a proprietary media asset, replace the proprietary media asset in a reference database with the first candidate media device asset, the proprietary media asset to be provided by a first audience measurement entity client;
identify a first set of candidate media device assets for disqualification from loading into the reference database, the candidate media device assets generated in response to respective presentations of media, the candidate media device assets including A) a signature and B) a media identifier that identifies the media, the first set of candidate media device assets including the first candidate media device asset and a second candidate media device asset, the second candidate media device asset associated with a second audience measurement entity client different from the first audience measurement entity client;
generate a hash table using a second set of the candidate media device assets, the first set different from the second set;
determine one or more counts of matches between C) a first signature and a first media identifier of the first candidate media device asset of the second set and D) respective signatures and media identifiers of multiple ones of the second set using the hash table, the multiple ones of the second set not including the first candidate media device asset; and
load the first signature into the reference database as a reference signature based on the one or more counts of the matches.
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