Click-through rate prediction is a critical task in online advertising. Currently, many existing methods attempt to extract user potential interests from historical click behavior sequences. However, it is difficult to handle sparse user behaviors or broaden interest exploration. Recently, some researchers incorporate the item-item co-occurrence graph as an auxiliary. Due to the elusiveness of user interests, those works still fail to determine the real motivation of user click behaviors. Besides, those works are more biased towards popular or similar commodities. They lack an effective mechanism to break the diversity restrictions. In this paper, we point out two special properties of triangles in the item-item graphs for recommendation systems: Intra-triangle homophily and Inter-triangle heterophiy. Based on this, we propose a novel and effective framework named Triangle Graph Interest Network (TGIN). For each clicked item in user behavior sequences, we introduce the triangles in its neighborhood of the item-item graphs as a supplement. TGIN regards these triangles as the basic units of user interests, which provide the clues to capture the real motivation for a user clicking an item. We characterize every click behavior by aggregating the information of several interest units to alleviate the elusive motivation problem. The attention mechanism determines users' preference for different interest units. By selecting diverse and relative triangles, TGIN brings in novel and serendipitous items to expand exploration opportunities of user interests. Then, we aggregate the multi-level interests of historical behavior sequences to improve CTR prediction. Extensive experiments on both public and industrial datasets clearly verify the effectiveness of our framework.
GLoCIM: Global-view Long Chain Interest Modeling for news recommendation
School of Cyberspace Security, Beijing University of Posts and Telecommunications（北京邮电大学网络空间安全学院）；Department of Electronic Engineering, Tsinghua University（清华大学电子工程系）；Zhongguancun Laboratory（中关村实验室）
Improved Personalized Headline Generation via Denoising Fake Interests from Implicit Feedback
Henan Institute of Advanced Technology, Zhengzhou University（河南高级技术研究所，郑州大学）；Institute of Computing Technology, Chinese Academy of Sciences（中国科学院计算技术研究所）；Independent Researcher（独立研究者）
Neighbour Interaction based Click-Through Rate Prediction via Graph-masked Transformer
The University of Manchester（曼彻斯特大学）；National Centre for Text Mining（国家文本挖掘中心）；Tencent AI Lab（腾讯人工智能实验室）；Tencent（腾讯）；University of Texas at Arlington（德克萨斯大学阿灵顿分校）
Meta-Wrapper: Differentiable Wrapping Operator for User Interest Selection in CTR Prediction
University of Chinese Academy of Sciences（中国科学院大学）；Institute of Computing Technology, Chinese Academy of Sciences（中国科学院计算技术研究所）；Peng Cheng Laboratory（鹏城实验室）
