Methods and apparatus to identify media using hash keys
AssigneeThe Nielsen Company (US), LLC
InventorDaniel Nelson
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Abstract
Methods and apparatus are disclosed to identify media using hash keys. An example method involves when a first metered hash key does not match a first reference hash key, generating, with a processor, an error level using a bitwise comparison of the first metered hash key and a second reference hash key corresponding to a second metered hash key. When the error level satisfies a threshold, the example method involves obtaining, with a processor, media reference data stored in association with the second reference hash key, and storing, with a processor, the media reference data in association with the first metered hash key.
Claims24
A method comprising:
- when a first metered hash key does not match a first reference hash key, generating, with a processor, an error level using a first bitwise comparison of the first metered hash key and a second reference hash key, the second reference hash key corresponding to a second metered hash key;
- determining, with the processor, if the error level satisfies a threshold;
- and
- when the processor determines that the error level satisfies the threshold:
- obtaining, with the processor, media reference data stored in association with the second reference hash key, and
- storing, with the processor, the media reference data in association with the first metered hash key.
A tangible computer readable storage medium comprising instructions which, when executed by a processor, cause the processor to at least:
- when a first metered hash key does not match a first reference hash key, execute a first bitwise comparison of the first metered hash key and a second reference hash key corresponding to a second metered hash key to generate an error level;
- determine if the error level satisfies a threshold;
- and
- when the processor determines that the error level satisfies the threshold, store media reference data associated with the second reference hash key, and in association with the first metered hash key.
An apparatus comprising:
- a hardware processor to implement:
- an error handler to, via the hardware processor, generate an error level using a bitwise comparison of a first metered hash key and a second reference hash key corresponding to a second metered hash key when the first metered hash key does not match a first reference hash key, and to determine if the error level satisfies a threshold;
- and
- an impression logger to, when the error level satisfies the threshold, obtain media reference data stored in association with the second reference hash key, and store the media reference data in association with the first metered hash key.
Dependencies are inferred from the claim text.