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arXiv 2511.00436cs.IR
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面向富含协同信号的推荐的简单且行为驱动的数据增强

Simple and Behavior-Driven Augmentation for Recommendation with Rich Collaborative Signals

Doyun Choi, Cheonwoo Lee, Jaemin Yoo

AI总结:

本文提出SCAR方法,利用从用户-物品交互中提取的协同信号生成伪交互进行数据增强,而非移除信息,从而提升图协同过滤对比学习效果,在四个基准数据集上优于现有方法且在稀疏场景表现突出。

摘要:

对比学习(CL)已被广泛用于增强图协同过滤(GCF)在个性化推荐中的性能。由于数据增强在CL的成功中起着至关重要的作用,先前的工作设计了增强方法来移除用户与物品之间的噪声交互,以生成有效的增强视图。然而,定义“噪声”的模糊性带来了丢失核心信息和生成不可靠数据视图的持续风险,同时增加了增强的整体复杂性。在本文中,我们提出了一种简单协同增强推荐方法(SCAR),这是一种新颖且直观的增强方法,旨在最大化CL对GCF的有效性。SCAR不采用移除信息的方式,而是利用从用户-物品交互中提取的协同信号来生成伪交互,然后将其添加到现有交互中或用于替换现有交互。这产生了更鲁棒的表示,同时避免了过于复杂的增强模块的陷阱。我们在四个基准数据集上进行了实验,结果表明SCAR在关键评估指标上优于先前基于CL的GCF方法以及其他最先进的自监督学习方法。SCAR在不同的超参数设置下表现出强大的鲁棒性,并且在稀疏数据场景中特别有效。

英文摘要:

Contrastive learning (CL) has been widely used for enhancing the performance of graph collaborative filtering (GCF) for personalized recommendation. Since data augmentation plays a crucial role in the success of CL, previous works have designed augmentation methods to remove noisy interactions between users and items in order to generate effective augmented views. However, the ambiguity in defining ''noisiness'' presents a persistent risk of losing core information and generating unreliable data views, while increasing the overall complexity of augmentation. In this paper, we propose Simple Collaborative Augmentation for Recommendation (SCAR), a novel and intuitive augmentation method designed to maximize the effectiveness of CL for GCF. Instead of removing information, SCAR leverages collaborative signals extracted from user-item interactions to generate pseudo-interactions, which are then either added to or used to replace existing interactions. This results in more robust representations while avoiding the pitfalls of overly complex augmentation modules. We conduct experiments on four benchmark datasets and show that SCAR outperforms previous CL-based GCF methods as well as other state-of-the-art self-supervised learning approaches across key evaluation metrics. SCAR exhibits strong robustness across different hyperparameter settings and is particularly effective in sparse data scenarios.

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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