CIMM is taking a pro-active role in advancing new media nomenclature and processes with both its Lexicon(terms
and definitions associated with Set-Top-Box data measurement) and Asset Identification Primer (glossary of asset terms).
These documents form the basis of this column, which offers a common language for Set-Top-Box nomenclature that can expedite the rollout of the data for its many industry applications.
The
common currency for commercial measurement is C3, which we defined in a previous column earlier this year as the average of the performance of all commercials in a program plus three days of DVR
playback. But there are other commercial measurement metrics in use by measurement companies today. Here is a sampling of some of the more common terms and definitions regarding live commercial
ratings.
Commercial Ratings
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See also: Rating
CIMM DEFINITION: Percent of homes or viewers who tuned into a commercial out of the specified universe of
homes or viewers whether their sets were in use at the time or not. Commercial ratings can be average minute or, with second-by-second Set-Top-Box data, on an average second rating level.
2:
Commercial rating defines the average second audience for the specified commercial/advertisement. Rating is calculated as the total tuned seconds divided by the total possible tuned seconds for the
content and time period specified. (Source: TRA
NOTE - How granular does the Set-Top-Box data need to be - One second? Five second? More? And then what about Latency, which can make accurate
measurement at the one second level difficult.
Commercial Live Rating
See also: Rating
CIMM DEFINITION: A commercial rating viewed live in a linear
fashion, that is, without any trick play.
2: Percentage of STBs or STB Households tuned to a specific commercial without timeshifting. (Source: Nielsen)
NOTE - Can only measure
“Opportunity to See,” as opposed to actual confirmed viewing. (Source: TIVO)
Please refer to the CIMM Lexicon online at http://www.cimm-us.org/lexicon.htm for additional information on these and other terms.