AutoDenoise: Automatic Data Instance Denoising for Recommendations

Lin，Weilin1; Zhao，Xiangyu1; Wang，Yejing1; Zhu，Yuanshao2; Wang，Wanyu1

10.1145/3543507.3583339

2023-04-30

ACM Web Conference 2023 - Proceedings of the World Wide Web Conference, WWW 2023

1003-1011

Historical user-item interaction datasets are essential in training modern recommender systems for predicting user preferences. However, the arbitrary user behaviors in most recommendation scenarios lead to a large volume of noisy data instances being recorded, which cannot fully represent their true interests. While a large number of denoising studies are emerging in the recommender system community, all of them suffer from highly dynamic data distributions. In this paper, we propose a Deep Reinforcement Learning (DRL) based framework, AutoDenoise, with an Instance Denoising Policy Network, for denoising data instances with an instance selection manner in deep recommender systems. To be specific, AutoDenoise serves as an agent in DRL to adaptively select noise-free and predictive data instances, which can then be utilized directly in training representative recommendation models. In addition, we design an alternate two-phase optimization strategy to train and validate the AutoDenoise properly. In the searching phase, we aim to train the policy network with the capacity of instance denoising; in the validation phase, we find out and evaluate the denoised subset of data instances selected by the trained policy network, so as to validate its denoising ability. We conduct extensive experiments to validate the effectiveness of AutoDenoise combined with multiple representative recommender system models.

Instance Denoising Recommender System Reinforcement learning

其他

英语

2-s2.0-85159284715

Scopus

1.City University of Hong Kong,Hong Kong
2.City University of Hong Kong,Southern University of Science and Technology,Hong Kong

Lin，Weilin,Zhao，Xiangyu,Wang，Yejing,et al. AutoDenoise: Automatic Data Instance Denoising for Recommendations[C],2023:1003-1011.