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arXiv 2401.02130cs.IRcs.SI
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基于谱的图神经网络用于互补商品推荐

Spectral-Based Graph Neural Networks for Complementary Item Recommendation

Haitong Luo, Xuying Meng, Suhang Wang, Hanyun Cao, Weiyao Zhang, Yequan Wang, Yujun Zhang

AI总结:

针对互补商品兼具相关性与不相似性的建模挑战,提出SComGNN模型,利用谱图卷积网络的低通和中通滤波器分别捕获低频和中频分量,并通过两阶段注意力机制平衡两属性,在四个数据集上显著优于基线。

摘要:

建模互补关系极大地帮助推荐系统在购买一件商品时准确且及时地推荐后续商品。与传统的相似关系不同,具有互补关系的商品可能会被连续购买(例如 iPhone 和 Airpods Pro),它们不仅共享相关性,还表现出不相似性。由于这两个属性是对立的,建模互补关系具有挑战性。以往利用这些关系的尝试要么忽略要么过度简化不相似性属性,导致建模无效且无法平衡这两个属性。由于图神经网络(GNNs)能够在谱域中捕获节点间的相关性和不相似性,我们可以利用基于谱的 GNNs 来有效理解和建模互补关系。在本研究中,我们提出了一种名为 Spectral-based Complementary Graph Neural Networks (SComGNN) 的新方法,该方法利用互补商品图的谱特性。我们首次观察到互补关系由低频和中频分量组成,分别对应相关性和不相似性属性。基于这一谱观察,我们设计了带有低通和中通滤波器的谱图卷积网络,以捕获低频和中频分量。此外,我们提出了一种两阶段注意力机制,以自适应地整合和平衡这两个属性。在四个电子商务数据集上的实验结果证明了我们模型的有效性,SComGNN 显著优于现有的基线模型。

英文摘要:

Modeling complementary relationships greatly helps recommender systems to accurately and promptly recommend the subsequent items when one item is purchased. Unlike traditional similar relationships, items with complementary relationships may be purchased successively (such as iPhone and Airpods Pro), and they not only share relevance but also exhibit dissimilarity. Since the two attributes are opposites, modeling complementary relationships is challenging. Previous attempts to exploit these relationships have either ignored or oversimplified the dissimilarity attribute, resulting in ineffective modeling and an inability to balance the two attributes. Since Graph Neural Networks (GNNs) can capture the relevance and dissimilarity between nodes in the spectral domain, we can leverage spectral-based GNNs to effectively understand and model complementary relationships. In this study, we present a novel approach called Spectral-based Complementary Graph Neural Networks (SComGNN) that utilizes the spectral properties of complementary item graphs. We make the first observation that complementary relationships consist of low-frequency and mid-frequency components, corresponding to the relevance and dissimilarity attributes, respectively. Based on this spectral observation, we design spectral graph convolutional networks with low-pass and mid-pass filters to capture the low-frequency and mid-frequency components. Additionally, we propose a two-stage attention mechanism to adaptively integrate and balance the two attributes. Experimental results on four e-commerce datasets demonstrate the effectiveness of our model, with SComGNN significantly outperforming existing baseline models.

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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