Xiaocong Xu

2 accepted papers

2026

Semi-Parametric Contextual Pricing with General Smoothness

Yuxuan Han, Xiaocong Xu, Yuxiao Wen, Yanjun Han, Ilan Lobel, Zhengyuan Zhou

ICLR 2026poster

We study the contextual pricing problem, where in each round a seller observes a context, sets a price, and receives a binary purchase signal. We adopt a semi-parametric model in which the demand follows a linear parametric form composed with an unknown link function from a $\beta$-Hölder class. Pri…

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2025

Precise Asymptotics and Refined Regret of Variance-Aware UCB

Yingying Fan, Yuxuan Han, Jinchi Lv, Xiaocong XU, Zhengyuan Zhou

NeurIPS 2025spotlight

In this paper, we study the behavior of the Upper Confidence Bound-Variance (UCB-V) algorithm for the Multi-Armed Bandit (MAB) problems, a variant of the canonical Upper Confidence Bound (UCB) algorithm that incorporates variance estimates into its decision-making process. More precisely, we provide…

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