arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2505.02492cs.IR
收藏

重复隐式反馈中的不确定性作为可靠性度量

Uncertainty in Repeated Implicit Feedback as a Measure of Reliability

Bruno Sguerra, Viet-Anh Tran, Romain Hennequin, Manuel Moussallam

AI总结:

本文针对音乐流媒体中重复隐式反馈的不确定性问题,提出量化重复消费模式不确定性的方法,并将其作为一致性指标融入推荐模型,实验证明能提升推荐准确性与相关性。

摘要:

推荐系统高度依赖用户反馈来学习有效的用户和物品表示。尽管推荐系统被广泛采用,但用于训练这些系统的反馈中所固有的不确定性却很少受到关注。隐式反馈和显式反馈都容易因人类交互的变异性而产生噪声,其中隐式反馈尤其具有挑战性。在协同过滤中,交互信号的可靠性至关重要,因为这些信号决定了用户和物品之间的相似性。因此,从隐式反馈中推导出准确的置信度度量,对于确保这些信号的可靠性是必不可少的。学术界和工业界的一个常见假设是,重复交互表明用户兴趣更强,从而提高了对偏好估计的置信度。然而,在音乐流媒体等领域,由于饱和和曝光等因素,重复消费可能随时间改变用户偏好。尽管关于重复消费的文献承认这些动态,但在为隐式反馈推导置信度分数时,这些动态往往被忽视。本文通过关注音乐流媒体来弥补这一空白,在该领域中重复交互频繁且可量化。我们分析了重复模式与影响用户兴趣的关键因素之间的交叉关系,并开发了量化相关不确定性的方法。这些不确定性度量随后作为一致性指标被整合到推荐任务中。我们的实证结果表明,将不确定性纳入用户偏好模型可以产生更准确和更相关的推荐。主要贡献包括:对重复消费模式中不确定性的全面分析、一个新数据集的发布,以及一个用于隐式收听反馈的贝叶斯模型。

英文摘要:

Recommender systems rely heavily on user feedback to learn effective user and item representations. Despite their widespread adoption, limited attention has been given to the uncertainty inherent in the feedback used to train these systems. Both implicit and explicit feedback are prone to noise due to the variability in human interactions, with implicit feedback being particularly challenging. In collaborative filtering, the reliability of interaction signals is critical, as these signals determine user and item similarities. Thus, deriving accurate confidence measures from implicit feedback is essential for ensuring the reliability of these signals. A common assumption in academia and industry is that repeated interactions indicate stronger user interest, increasing confidence in preference estimates. However, in domains such as music streaming, repeated consumption can shift user preferences over time due to factors like satiation and exposure. While literature on repeated consumption acknowledges these dynamics, they are often overlooked when deriving confidence scores for implicit feedback. This paper addresses this gap by focusing on music streaming, where repeated interactions are frequent and quantifiable. We analyze how repetition patterns intersect with key factors influencing user interest and develop methods to quantify the associated uncertainty. These uncertainty measures are then integrated as consistency metrics in a recommendation task. Our empirical results show that incorporating uncertainty into user preference models yields more accurate and relevant recommendations. Key contributions include a comprehensive analysis of uncertainty in repeated consumption patterns, the release of a novel dataset, and a Bayesian model for implicit listening feedback.

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。

↑