arXiv:2504.05323cs.IRcs.AI2025-04

提出多视角注意力机制,让推荐系统更准确捕捉用户动态偏好。

Multi-Perspective Attention Mechanism for Bias-Aware Sequential Recommendation

  • 将用户行为序列拆分为三类短序列,用图神经网络加权物品
  • 设计自适应多偏见视角注意力模块,提升推荐精度
  • 适合关注用户行为演变与推荐公平性的研究者

在信息技术快速发展背景下,推荐系统已成为应对信息过载的关键工具。然而,传统推荐系统在捕捉用户行为动态演化方面仍存局限。为更好理解并预测用户行为,特别是复杂的时间演化特性,序列推荐系统逐渐成为研究重点。当前许多序列推荐算法忽视了流行偏见的放大效应,导致推荐结果易受马太效应影响,限制了系统对用户偏好动态变化的深层感知能力,削弱了推荐覆盖范围。为此,本文提出一种基于序列信息与注意力机制的推荐系统——多视角注意力偏见感知序列推荐(MABSRec)。首先,将用户序列重构为三种短序列类型,并利用图神经网络进行物品加权;随后,提出自适应多偏见视角注意力模块,以增强推荐准确性。实验结果表明,MABSRec在各项评估指标上均表现出显著优势,展现出在序列推荐任务中的优异性能。

原文摘要 · Abstract (English)

In the era of advancing information technology, recommender systems have emerged as crucial tools for dealing with information overload. However, traditional recommender systems still have limitations in capturing the dynamic evolution of user behavior. To better understand and predict user behavior, especially taking into account the complexity of temporal evolution, sequential recommender systems have gradually become the focus of research. Currently, many sequential recommendation algorithms ignore the amplification effects of prevalent biases, which leads to recommendation results being susceptible to the Matthew Effect. Additionally, it will impose limitations on the recommender system's ability to deeply perceive and capture the dynamic shifts in user preferences, thereby diminishing the extent of its recommendation reach. To address this issue effectively, we propose a recommendation system based on sequential information and attention mechanism called Multi-Perspective Attention Bias Sequential Recommendation (MABSRec). Firstly, we reconstruct user sequences into three short types and utilize graph neural networks for item weighting. Subsequently, an adaptive multi-bias perspective attention module is proposed to enhance the accuracy of recommendations. Experimental results show that the MABSRec model exhibits significant advantages in all evaluation metrics, demonstrating its excellent performance in the sequence recommendation task.

序列推荐注意力机制偏见感知

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