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arXiv 1907.01645cs.IRcs.LGcs.SIstat.ML
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协同过滤中跨域损失的自适应深度学习

Adaptive Deep Learning of Cross-Domain Loss in Collaborative Filtering

Maastricht University(马斯特里赫特大学)

Dimitrios Rafailidis, Gerhard Weiss

摘要:

如今,用户在社交媒体平台和电子商务网站上开设多个账户,表达他们在不同领域的个人偏好。然而,用户的行为在不同的领域会发生变化,这取决于用户与之交互的内容,如电影、音乐、服装和零售产品。在本文中,我们提出了一种用于跨域推荐的自适应深度学习策略,称为ADC。我们设计了一个神经网络架构,并制定了跨域损失函数,计算用户偏好的非线性跨域和转移的知识,用户的多种行为,相应的。此外,我们还引入了一种有效的跨域损失平衡算法,该算法在通过反向传播训练模型时,直接调整梯度幅度并根据域的复杂度/规模调整学习率。在此过程中,ADC在优化模型参数时控制和调整每个域的贡献。我们在六个公开的跨域推荐任务上的实验证明了所提出的ADC模型比其他最先进的方法的有效性。此外,我们研究了所提出的自适应深度学习策略的效果,并表明ADC可以很好地平衡具有不同复杂度的域的影响。

英文摘要:

Nowadays, users open multiple accounts on social media platforms and e-commerce sites, expressing their personal preferences on different domains. However, users' behaviors change across domains, depending on the content that users interact with, such as movies, music, clothing and retail products. In this paper, we propose an adaptive deep learning strategy for cross-domain recommendation, referred to as ADC. We design a neural architecture and formulate a cross-domain loss function, to compute the non-linearity in user preferences across domains and transfer the knowledge of users' multiple behaviors, accordingly. In addition, we introduce an efficient algorithm for cross-domain loss balancing which directly tunes gradient magnitudes and adapts the learning rates based on the domains' complexities/scales when training the model via backpropagation. In doing so, ADC controls and adjusts the contribution of each domain when optimizing the model parameters. Our experiments on six publicly available cross-domain recommendation tasks demonstrate the effectiveness of the proposed ADC model over other state-of-the-art methods. Furthermore, we study the effect of the proposed adaptive deep learning strategy and show that ADC can well balance the impact of the domains with different complexities.

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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