Glossary
From A for AGF Videoforschung to Z for zapping, the most important technical terms in video research are explained here.
ECC stands for External Coincidental Check and describes a method for verifying the validity of the television viewing behavior of panel participants. In this process, the usage measured in the AGF Panel is compared with that of an external population sample. The most recent ECC included more than 8,000 CATI interviews, which were conducted at fixed measurement points distributed over the weekdays.
EDI is an acronym that stands for Electronic Data Interchange. The EDI format used in the advertising market is a standardization of the data record formats for data interchanges within the advertising industry, including interchanges of rate, programming and booking information between marketers and agencies.
Editing rules are fixed attribution rules used in market research to improve data quality. To this end, logical relationships and plausibilities between characteristics from the survey or other data sources are used and rule-bound data are altered. One example of a simple editing rule is bridging: In case of a missing match at Time t, a usage of a Broadcaster A at Time t-1 and at Time t+1, and no recognizable (infrared) user action, a usage of Broadcaster A is inserted into the data also for Time t.
Another group of editing rules relates to the attribution of usage to a broadcaster when the match leads to more than one broadcaster being available for selection. This is known as the simulcast resolution. For example, if a match points to a broadcaster that is distributed in Schleswig-Holstein and a broadcaster that is distributed in Bavaria, the usage is attributed to the Bavarian broadcaster if the household is located in Bavaria. Due to the considerable quantity of available information, the editing rules for audio matching can be highly complex. However, editing rules are also used for master data.
Effective reach refers to the share of persons in a target group who have at least a certain number of average contacts. It is stated in millions or as a percentage.
Encoders are electronic components used to encrypt or compress signals for analog and digital television. They can take the form of either hardware or software. Audio or video signals are encrypted and compressed with an encoder in order to ensure the fastest-possible data rates for long-distance data channels. Moreover, compressed files have a smaller data size and therefore require less storage space.
EPG is an acronym that stands for Electronic Programme Guide. It is a function of digital television that gives the viewer an overview of broadcast TV programs. EPGs include a navigation system with information about programmes, as well as – depending on the level of sophistication – search functions for programme selection. They are offered by programme providers or third-party providers and are also available in most set-top boxes.
Ethernet summarises a family of network technologies that have addressing, frame format and access control to the transmission medium in common. The technology is a wired data network technology for local data networks, so-called LANs, which enables data exchange between all devices connected in a local network (e.g. computers or printers) even over long distances.
Evaluation refers to the analysis of the performance of media plans and advertising campaigns.
Livestream that can take place in parallel both with or without direct reference to the TV broadcast. Example: Curling competition in the event livestream while an ice hockey game is being broadcast on TV.
An external overlap occurs when persons are reached by several media or media genres, as in the case of media mix campaigns, for example.
External guidelines are external requirements for the structural composition of the AGF panel. Since 01/01/2022, the AGF Video Potentials serves as the valid external guideline for the construction, control, and weighting of the AGF panel.
The AGF Video Potentials consists of two elements: the potential study, which the AGF has been conducting in cooperation with agma since 2020, as well as the AGF's own Platform Study.