In a report out today, the Video Advertising Bureau alleges significant discrepancies in Nielsen’s data-backed audience measurement methodology that serves as a basis for buying and selling TV ads.

Barb, the audience measurement and television ratings organisation, has announced the commissioning of two prototypes and two new data sources for Barb Panel Plus, which extends Barb’s use of big data ...

Nielsen has won accreditation for its “Big Data + Panel” TV measurement, becoming the first ratings provider to earn approval for that methodology. The accreditation from the Media Rating Council is a ...