arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.01253cs.IR
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RimiRec:面向推荐的分层结构精细多兴趣建模

RimiRec: Modeling Refined Multi-interest in Hierarchical Structure for Recommendation

Haolei Pei, Yuanyuan Xu, Yangping Zhu, Yuan Nie

AI总结:

提出RimiRec两阶段方法,通过分层聚类和Transformer显式建模用户分层精细多兴趣,并在Lofter部署,取得最先进性能。

摘要:

工业推荐系统通常由检索阶段和排序阶段组成,以处理十亿级别的用户和物品。检索阶段负责检索与用户兴趣相关的候选物品以进行推荐,并已受到广泛关注。通常,用户会表现出分层结构中的精细多兴趣。例如,一个用户喜欢柯南和怪盗基德,这两个角色位于“动漫、日本动漫、名侦探柯南”的分层结构中。然而,大多数现有方法忽略了这种分层特性,并简单地对细粒度兴趣信息进行平均处理。因此,我们提出了一种新颖的两阶段方法,以显式建模分层结构中的精细多兴趣以用于推荐。在第一阶段,即分层多兴趣挖掘阶段,分层聚类和基于Transformer的模型自适应地生成用户感兴趣的兴趣圈或子圈。在第二阶段,检索空间的划分使得EBR模型只需处理每个圈内的物品,并能准确捕捉用户的精细兴趣。实验结果表明,所提出的方法达到了最先进的性能。我们的框架也已在Lofter上部署。

英文摘要:

Industrial recommender systems usually consist of the retrieval stage and the ranking stage, to handle the billion-scale of users and items. The retrieval stage retrieves candidate items relevant to user interests for recommendations and has attracted much attention. Frequently, a user shows refined multi-interests in a hierarchical structure. For example, a user likes Conan and Kuroba Kaito, which are the roles in hierarchical structure "Animation, Japanese Animation, Detective Conan". However, most existing methods ignore this hierarchical nature, and simply average the fine-grained interest information. Therefore, we propose a novel two-stage approach to explicitly modeling refined multi-interest in a hierarchical structure for recommendation. In the first hierarchical multi-interest mining stage, the hierarchical clustering and transformer-based model adaptively generate circles or sub-circles that users are interested in. In the second stage, the partition of retrieval space allows the EBR models to deal only with items within each circle and accurately capture users' refined interests. Experimental results show that the proposed approach achieves state-of-the-art performance. Our framework has also been deployed at Lofter.

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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