Agent-based recommender systems assist users based on their preferences and those of similar users. However, when dealing with multimedia contents they need of: (i) selecting as recommenders those users that have similar profiles and that are reliable in providing suggestions and (ii) considering the effects of the device currently exploited. To address these issues, we propose a multi-agent architecture, called MART, conceived to this aim and based on a particular trust model. Some experimental results are presented to evaluate our proposal, that show MART is more effective, in terms of suggestion quality, than other agent-based recommenders.
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