期刊
IEEE TRANSACTIONS ON MULTIMEDIA
卷 23, 期 -, 页码 538-549出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMM.2020.2984094
关键词
IPTV; recommender system; realtime recommendation; fusion method; attention mechanism; neural networks
资金
- Guangzhou Science and Technology Plan key project, China [201704030124]
Using a large IPTV dataset, this paper analyzes channel zapping behaviors of IPTV users to generate more accurate channel zapping recommendations. A deep neural network model, consisting of a Recommender System Attention module and a Channel Attention module, is developed to further improve recommendation accuracy.
Internet Protocol TV (IPTV) normally has the advantage of providing far more TV channels than the traditional TV services, while as the other side of the coin it has the problem of information overload. Users of IPTV usually have difficulties finding channels matching their interests. In this paper, using a large IPTV dataset, we analyze channel zapping behaviors of IPTV users and discover various patterns that can be used to generate more accurate channel zapping recommendations. Based on user behavior analysis, we develop several base and fusion recommender systems that generate in real-time a short list of channels for users to consider whenever they want to switch channels. A deep neural network model that consists of a Recommender System Attention (RS Attention) module and a Channel Attention module capturing the static and dynamic user switching behaviors is also developed to further improve the recommendation accuracy. Evaluation on the IPTV dataset demonstrates that our fusion recommender can achieve 41% hit ratio with only three candidate channels, and our attention neural network model further pushes it up to 45%. Our recommender systems only take as input user channel zapping sequences, and can be easily adopted by IPTV systems with low data and computation overheads.
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