Positive, Negative and Neutral: Modeling Implicit Feedback in Session-based News Recommendation

• URL: http://arxiv.org/abs/2205.06058v1
• Date: Thu, 12 May 2022 12:47:06 GMT
• Title: Positive, Negative and Neutral: Modeling Implicit Feedback in Session-based News Recommendation
• Authors: Shansan Gong and Kenny Q. Zhu
• Abstract summary: We propose a comprehensive framework to model user behaviors through positive feedback and negative feedback. The framework implicitly models the user using their session start time, and the article using its initial publishing time. Empirical evaluation on three real-world news datasets shows the framework's promising performance.
• Score: 13.905580921329717
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: News recommendation for anonymous readers is a useful but challenging task for many news portals, where interactions between readers and articles are limited within a temporary login session. Previous works tend to formulate session-based recommendation as a next item prediction task, while they neglect the implicit feedback from user behaviors, which indicates what users really like or dislike. Hence, we propose a comprehensive framework to model user behaviors through positive feedback (i.e., the articles they spend more time on) and negative feedback (i.e., the articles they choose to skip without clicking in). Moreover, the framework implicitly models the user using their session start time, and the article using its initial publishing time, in what we call "neutral feedback". Empirical evaluation on three real-world news datasets shows the framework's promising performance of more accurate, diverse and even unexpectedness recommendations than other state-of-the-art session-based recommendation approaches.

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