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arXiv 2202.03097cs.IR
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学习过去,进化未来:基于搜索的时间感知推荐与序列行为数据

Learn over Past, Evolve for Future: Search-based Time-aware Recommendation with Sequential Behavior Data

Jiarui Jin, Xianyu Chen, Weinan Zhang, Junjie Huang, Ziming Feng, Yong Yu

摘要:

个性化推荐是现代电子商务的重要组成部分,其中用户的需求不仅取决于他们的个人资料,而且还取决于他们最近的浏览行为以及一段时间前进行的定期购买。在本文中,我们提出了一个新的框架命名为基于搜索的时间感知推荐(STARec),它捕捉用户随着时间的推移,通过一个统一的基于搜索的时间感知模型不断变化的需求。更具体地说,我们首先设计了一个基于搜索的模块来检索用户的相关历史行为,然后将其与她最近的记录混合起来,输入到一个时间感知的顺序网络中,以捕获她的时间敏感需求。除了从她的个人历史中检索相关信息外,我们还建议检索和检索类似用户的记录作为额外参考。所有这些连续的记录进一步融合,以作出最后的建议。除了这个框架,我们还开发了一个新的标签技巧,使用以前的标签(即,用户的反馈)作为输入,以更好地捕捉用户的浏览模式。我们对三个真实世界的商业数据集进行了广泛的实验,针对最先进的方法进行点击率预测任务。实验结果表明,我们提出的框架和技术的优越性和效率。此外,在X公司的日常项目推荐平台上的在线实验结果表明,STARec在其两个主要项目推荐场景中的CTR指标上分别获得了约6%和1.5%的平均性能提升。

英文摘要:

The personalized recommendation is an essential part of modern e-commerce, where user's demands are not only conditioned by their profile but also by their recent browsing behaviors as well as periodical purchases made some time ago. In this paper, we propose a novel framework named Search-based Time-Aware Recommendation (STARec), which captures the evolving demands of users over time through a unified search-based time-aware model. More concretely, we first design a search-based module to retrieve a user's relevant historical behaviors, which are then mixed up with her recent records to be fed into a time-aware sequential network for capturing her time-sensitive demands. Besides retrieving relevant information from her personal history, we also propose to search and retrieve similar user's records as an additional reference. All these sequential records are further fused to make the final recommendation. Beyond this framework, we also develop a novel label trick that uses the previous labels (i.e., user's feedbacks) as the input to better capture the user's browsing pattern. We conduct extensive experiments on three real-world commercial datasets on click-through-rate prediction tasks against state-of-the-art methods. Experimental results demonstrate the superiority and efficiency of our proposed framework and techniques. Furthermore, results of online experiments on a daily item recommendation platform of Company X show that STARec gains average performance improvement of around 6% and 1.5% in its two main item recommendation scenarios on CTR metric respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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