Abstract
News recommendation is very critical to help users quickly find news satisfying their preferences. Modeling user interests with accurate user representations is a challenging task in news recommendation. Existing methods usually utilize recurrent neural networks to capture the short-term user interests, and have achieved promising performance. However, existing methods ignore the user interest drifts caused by time interval in the short session. Thus they always assume the short-term user interests are stable, which might lead to suboptimal performance. To address this issue, we propose the novel model named Time-aware Attentive Neural Network with Long-term and Short-term User Representation (TANN). Specifically, to reduce the influence of interest drifts, we propose the Time-aware Self-Attention (T-SA) which considers the time interval information about user browsing history. We learn the short-term user representations from their recently browsing news through the T-SA. In addition, we learn more informative news representations from the historical readers and the contents of news articles. Moreover, we adopt the latent factor model to build the long-term user representations from the entire browsing history. We combine the short-term and long-term user representations to capture more accurate user interests. Extensive experiments on two public datasets show that our model outperforms several state-of-the-art methods.
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Acknowledgements
This work is supported by the project of National Key research and development plan (Grant No. 213) and the National Natural Science Foundation of China (Grant No. 61976160, No. 61673301), and Major project of Ministry of Public Security (Grant No. 20170004).
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Pang, Y., Zhang, Y., Tong, J., Wei, Z. (2020). Time-Aware Attentive Neural Network for News Recommendation with Long- and Short-Term User Representation. In: Li, G., Shen, H., Yuan, Y., Wang, X., Liu, H., Zhao, X. (eds) Knowledge Science, Engineering and Management. KSEM 2020. Lecture Notes in Computer Science(), vol 12275. Springer, Cham. https://doi.org/10.1007/978-3-030-55393-7_7
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