通过实体可靠性提升推荐系统去噪效果,显著改善准确率。
From Entity Reliability to Clean Feedback: An Entity-Aware Denoising Framework Beyond Interaction-Level Signals
- 以实体训练损失均值衡量用户与物品可靠性,替代传统交互信号
- 在多个数据集上提升NDCG@50达27.01%,计算开销极低
- 无需复杂调参,适用于各类推荐模型,适合工业部署
隐式反馈是现代推荐系统的核心,但其固有的噪声会干扰模型训练并降低用户体验。大规模场景下,噪声可能误导学习过程,损害推荐精度与平台价值。现有去噪方法通常忽略噪声的实体特异性,且计算成本高、超参数调优复杂。为此,我们提出EARD(Entity-Aware Reliability-Driven Denoising)——一种轻量级框架,将关注点从交互级信号转向实体级可靠性。基于训练损失与噪声的相关性观察,EARD利用用户和物品的平均训练损失作为声誉代理,量化其可靠性,并将其与交互级置信度融合。该框架具有模型无关性、计算高效性,仅需两个直观超参数。在多个数据集和主干模型上的实验表明,EARD相较当前最优基线实现显著提升(如NDCG@50最高提升27.01%),额外计算开销可忽略。全面消融研究与机制分析进一步验证其对超参数不敏感及实际可扩展性。结果凸显实体感知可靠性建模在隐式反馈去噪中的重要性,为更鲁棒的推荐研究开辟新路径。
原文摘要 · Abstract (English)
Implicit feedback is central to modern recommender systems but is inherently noisy, often impairing model training and degrading user experience. At scale, such noise can mislead learning processes, reducing both recommendation accuracy and platform value. Existing denoising strategies typically overlook the entity-specific nature of noise while introducing high computational costs and complex hyperparameter tuning. To address these challenges, we propose \textbf{EARD} (\textbf{E}ntity-\textbf{A}ware \textbf{R}eliability-\textbf{D}riven Denoising), a lightweight framework that shifts the focus from interaction-level signals to entity-level reliability. Motivated by the empirical observation that training loss correlates with noise, EARD quantifies user and item reliability via their average training losses as a proxy for reputation, and integrates these entity-level factors with interaction-level confidence. The framework is \textbf{model-agnostic}, \textbf{computationally efficient}, and requires \textbf{only two intuitive hyperparameters}. Extensive experiments across multiple datasets and backbone models demonstrate that EARD yields substantial improvements over state-of-the-art baselines (e.g., up to 27.01\% gain in NDCG@50), while incurring negligible additional computational cost. Comprehensive ablation studies and mechanism analyses further confirm EARD's robustness to hyperparameter choices and its practical scalability. These results highlight the importance of entity-aware reliability modeling for denoising implicit feedback and pave the way for more robust recommendation research.
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