Abstract

Recommender systems assist the user to overcome the information overflow of today’s information society. When a recommendation failed, user’s trust in a system decreases due to the fact that most recommender systems act as black boxes. They don’t offer any insight into the systems logic and cannot be questioned as it is normal for recommendations between humans. Users don’t know how and which personal information is processed. Transparency, which is about explaining to the user why a recommendation is made, allows understanding the nature of a recommendation. Within a mobile environment, it is possible to address the user more individualized but transparency needs a completely different way of visualization and interaction. The paper in hand aims at an analysis of a survey which asked about the kind of style element as well as how much information should be visualized on a mobile device in order to offer transparency.

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