Glossary

From A for AGF Videoforschung to Z for zapping, the most important technical terms in video research are explained here.

Face-to-face interviews are oral interviews conducted in person, usually with the interviewees in their homes. For example, the recruitment interviews in the AGF Panel are conducted as face-to-face interviews.

Facts refer to various parameters that have been determined on the basis of calculation methods and basic data. They are classified as either basic data, which are independent of TV usage, or as performance values, which are only determined in dependence on TV usage. Examples of available facts are market share, viewing duration and number of cases.

Fact references ensure the concurrent presentation of results from TV, streaming and TV+ streaming in the AGF evaluation systems. They are presented behind each fact within curly brackets. Example “market share (m) {TV}.”

Fingerprint is a technology that can clearly identify audio signals on the basis of characteristic attributes. For example, audio signals or video content can be recognized by means of certain attributes and the content can be attributed on this basis.

Format ID is a variable that ensures the automatic linkage of the broadcast master (TV) and content master (streaming) on a data basis. It is an internal additional field of the broadcaster.

Free TV refers to the unencrypted broadcast of TV programmes. Unlike pay TV, free-TV programmes can be received free of charge.

Fusion is a statistical method for transferring the characteristics of the respondents of one sample to another sample. The precondition is a certain incidence of common characteristics in both samples. In the fusion process, selected characteristics are transferred from the donor sample (sample from which the characteristics are merged) to the recipient sample (sample into which the characteristics are merged). Data transmission takes place individually between homogenous fusion pairs.

After successful fusion, the fused data sets can be analyzed as if they had been collected in a single sample (Single source). AGF uses a fusion method to represent out-of-home use and to transfer video streaming usage from Nielsen’s Video Streaming Panels to GfK’s Video Panel.