Modeling Users' Contextualized Page-wise Feedback for Click-Through Rate Prediction in E-commerce Search

• URL: http://arxiv.org/abs/2203.15542v1
• Date: Tue, 29 Mar 2022 13:26:55 GMT
• Title: Modeling Users' Contextualized Page-wise Feedback for Click-Through Rate Prediction in E-commerce Search
• Authors: Zhifang Fan, Dan Ou, Yulong Gu, Bairan Fu, Xiang Li, Wentian Bao, Xin-Yu Dai, Xiaoyi Zeng, Tao Zhuang, Qingwen Liu
• Abstract summary: We propose a new perspective for context-aware users' behavior modeling by including the whole page-wisely exposed products. The intra-page context information and inter-page interest evolution can be captured to learn more specific user preference.
• Score: 29.661232361168956
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Modeling user's historical feedback is essential for Click-Through Rate Prediction in personalized search and recommendation. Existing methods usually only model users' positive feedback information such as click sequences which neglects the context information of the feedback. In this paper, we propose a new perspective for context-aware users' behavior modeling by including the whole page-wisely exposed products and the corresponding feedback as contextualized page-wise feedback sequence. The intra-page context information and inter-page interest evolution can be captured to learn more specific user preference. We design a novel neural ranking model RACP(i.e., Recurrent Attention over Contextualized Page sequence), which utilizes page-context aware attention to model the intra-page context. A recurrent attention process is used to model the cross-page interest convergence evolution as denoising the interest in the previous pages. Experiments on public and real-world industrial datasets verify our model's effectiveness.

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