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arXiv 2005.10473cs.IRcs.LGstat.ML
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基于上下文不变量的一对多跨域推荐迁移学习

Transfer Learning via Contextual Invariants for One-to-Many Cross-Domain Recommendation

University of Illinois at Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校);Visa Research(维萨研究院)

Adit Krishnan, Mahashweta Das, Mangesh Bendre, Hao Yang, Hari Sundaram

摘要:

社交网络上新用户和项目的快速增长加剧了推荐系统中的灰羊用户/长尾项目挑战。从历史上看,跨域联合聚类方法已经成功地利用了密集域和稀疏域之间的共享用户和项目来提高推理质量。然而,它们依赖于共享的评级数据,并且不能扩展到多个稀疏目标域(即,一对多传输设置)。这一点,再加上越来越多的神经推荐架构的采用,促使我们开发可扩展的神经层转移方法来进行跨域学习。我们的关键直觉是指导神经协同过滤,在密集域和稀疏域之间共享域不变组件,改善稀疏域中学习的用户和项目表示。我们利用跨域的上下文不变性来开发这些共享模块,并证明了用户-项目交互上下文,即使是稀疏的交互数据,我们也可以学习信息表示空间。我们展示了我们的方法在两个公共数据集和一个来自全球支付技术公司Visa的大规模交易数据集上的有效性和可扩展性(19%的项目召回率,比为每个域训练单独的模型快3倍)。我们的方法适用于内隐和外显反馈设置。

英文摘要:

The rapid proliferation of new users and items on the social web has aggravated the gray-sheep user/long-tail item challenge in recommender systems. Historically, cross-domain co-clustering methods have successfully leveraged shared users and items across dense and sparse domains to improve inference quality. However, they rely on shared rating data and cannot scale to multiple sparse target domains (i.e., the one-to-many transfer setting). This, combined with the increasing adoption of neural recommender architectures, motivates us to develop scalable neural layer-transfer approaches for cross-domain learning. Our key intuition is to guide neural collaborative filtering with domain-invariant components shared across the dense and sparse domains, improving the user and item representations learned in the sparse domains. We leverage contextual invariances across domains to develop these shared modules, and demonstrate that with user-item interaction context, we can learn-to-learn informative representation spaces even with sparse interaction data. We show the effectiveness and scalability of our approach on two public datasets and a massive transaction dataset from Visa, a global payments technology company (19% Item Recall, 3x faster vs. training separate models for each domain). Our approach is applicable to both implicit and explicit feedback settings.

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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