Search Results for author: Chunyuan Zheng

Found 7 papers, 3 papers with code

Be Aware of the Neighborhood Effect: Modeling Selection Bias under Interference

1 code implementation30 Apr 2024 Haoxuan Li, Chunyuan Zheng, Sihao Ding, Peng Wu, Zhi Geng, Fuli Feng, Xiangnan He

On this basis, we propose a novel ideal loss that can be used to deal with selection bias in the presence of neighborhood effect.

Debiased Collaborative Filtering with Kernel-Based Causal Balancing

1 code implementation30 Apr 2024 Haoxuan Li, Chunyuan Zheng, Yanghao Xiao, Peng Wu, Zhi Geng, Xu Chen, Peng Cui

Inspired by these gaps, we propose to approximate the balancing functions in reproducing kernel Hilbert space and demonstrate that, based on the universal property and representer theorem of kernel functions, the causal balancing constraints can be better satisfied.

Pareto Invariant Representation Learning for Multimedia Recommendation

no code implementations9 Aug 2023 Shanshan Huang, Haoxuan Li, Qingsong Li, Chunyuan Zheng, Li Liu

Multimedia recommendation involves personalized ranking tasks, where multimedia content is usually represented using a generic encoder.

Multimedia recommendation Representation Learning

Balancing Unobserved Confounding with a Few Unbiased Ratings in Debiased Recommendations

no code implementations17 Apr 2023 Haoxuan Li, Yanghao Xiao, Chunyuan Zheng, Peng Wu

Recommender systems are seen as an effective tool to address information overload, but it is widely known that the presence of various biases makes direct training on large-scale observational data result in sub-optimal prediction performance.

Imputation Recommendation Systems

StableDR: Stabilized Doubly Robust Learning for Recommendation on Data Missing Not at Random

no code implementations10 May 2022 Haoxuan Li, Chunyuan Zheng, Peng Wu

However, in this paper, we show that DR methods are unstable and have unbounded bias, variance, and generalization bounds to extremely small propensities.

Generalization Bounds Imputation +1

TDR-CL: Targeted Doubly Robust Collaborative Learning for Debiased Recommendations

no code implementations19 Mar 2022 Haoxuan Li, Yan Lyu, Chunyuan Zheng, Peng Wu

Bias is a common problem inherent in recommender systems, which is entangled with users' preferences and poses a great challenge to unbiased learning.

Imputation Recommendation Systems +1

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