User perspectives on semantic linking in the audio domain

Semantic linking has a potential to enrich the audiovisual experience for users of television or radio broadcast archives. Recently, automatic semantic linking, has received increased attention, especially as second screen applications for television broadcasts are emerging. Semantic linking for radio broadcasts can enrich radio listening experience in a similar manner in combination with second screen-like applications. While the development of such applications is gaining popularity, little is known about the information in a radio program that may be interesting for link creation from a user perspective. We conducted a user study on semantic linking for radio broadcasts in order to know what information users regard as suitable anchors and what kind of information they like as targets. We found that users often regard topic and person as the best link anchors in the program. Additionally, we found that frequency and timing of information elements in a radio program do not dominate the users' selection of anchors. Furthermore, we found that there is a low agreement among users on regarding certain information elements as anchors. For practical reasons the study is conducted with 10 minutes of radio broadcast material of a particular program type, and with a total of 22 participants. The insights gained in the user study will help the understanding of user perspectives on semantic linking in the audio domain.