Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed. An apparatus includes at least one memory, instructions, and processor circuitry to execute the instructions. The processor circuitry executes the instructions to deduplicate at least one of panel data, automatic content recognition data, or return path data to generate a deduplicated data set. The processor circuitry executes the instructions to generate a graph that connects devices identified in the deduplicated data set, the devices connected based on at least one of a shared intemet protocol addresses, a shared location identifier, or a common device identifier assigned by a common device identification algorithm. The processor circuitry executes the instructions to remove one or more connections based on an inconsistency between the one or more connections and personally identifiable information.

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to determine total audience ratings. An example apparatus includes metrics generator circuitry to generate a first audience size for media accessed by first devices of a first media platform at a first level of aggregation, the first level of aggregation corresponding to the media accessed on a first television network and on a first website, generate a second audience size for the media accessed by the first devices of the first media platform at a second level of aggregation, the second level of aggregation corresponding to the media accessed on the first television network and accessed on the first website and a second website, comparator circuitry to compare the first audience size to the second audience size, adjustor circuitry to reduce the first audience size based on the second audience size, and audience determination circuitry to determine a total audience size.