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arXiv 2104.05047cs.IRcs.LG
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面向稳定推荐的用户偏好动态建模

Dynamic Modeling of User Preferences for Stable Recommendations

Skolkovo Institute of Science and Technology(斯科尔科沃科学技术学院);Institute of Numerical Mathematics, Russian Academy of Sciences(俄罗斯科学院数值数学研究所)

Oluwafemi Olaleke, Ivan Oseledets, Evgeny Frolov

摘要:

在用户倾向于开发长期偏好的领域中,推荐的稳定性是推荐系统感知质量的重要因素。在这种情况下,不稳定的推荐可能会导致糟糕的个性化体验和不信任,从而使用户远离推荐服务。我们提出了一个增量学习方案,通过动态建模方法来缓解这些问题。它采用了一个广义矩阵形式的偏微分方程积分器,产生一个动态的低秩近似的时间相关的矩阵表示用户的喜好。该计划允许扩展著名的PureSVD方法的时间感知设置,并显着提高其稳定性,而不牺牲标准的顶级$n$建议任务的准确性。

英文摘要:

In domains where users tend to develop long-term preferences that do not change too frequently, the stability of recommendations is an important factor of the perceived quality of a recommender system. In such cases, unstable recommendations may lead to poor personalization experience and distrust, driving users away from a recommendation service. We propose an incremental learning scheme that mitigates such problems through the dynamic modeling approach. It incorporates a generalized matrix form of a partial differential equation integrator that yields a dynamic low-rank approximation of time-dependent matrices representing user preferences. The scheme allows extending the famous PureSVD approach to time-aware settings and significantly improves its stability without sacrificing the accuracy in standard top-$n$ recommendations tasks.

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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