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stat.ML2026
Attack-Resistant Uniform Fairness for Linear and Smooth Contextual Bandits
Qingwen Zhang, Wenjia Wang
Modern digital platforms use contextual bandits to allocate valuable exposure and opportunities among competing participants. Fair treatment is therefore an important concern, yet…
stat.ML2025
SPARKLE: A Nonparametric Approach for Online Decision-Making with High-Dimensional Covariates
Wenjia Wang, Qingwen Zhang, Xiaowei Zhang
Personalized services are central to today's digital economy, and their sequential decisions are often modeled as contextual bandits. Modern applications pose two main challenges:…