Author

Quanquan Gu

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#artificial intelligence Preprint Sep 2026

Bandits with Multiple Optimal Arms: Minimax Regret and Non-Adaptivity

We study multi-armed bandits (MAB) with multiple optimal arms, motivated by the fact that many practical decision making problems admit multiple correct answers. For $K$-armed bandits with $A$ optimal arms, we first provide a sharper analysis of previous sub-sampling algorithms (De Heide et al., 2021; Zhu and Nowak, 20...

Kaixuan Ji, Qi-Wei Di, Qing-Yue Zhao et al. · 0 citations

#machine learning Jul 2026

Multi-Mask Diffusion Language Models for Few-Step Generation

This work proposes a multi-mask diffusion model (MultiMDM) that preserves the masking structure towards few-step generation and derives a closed-form ELBO training objective for MultiMDM that supports continual training from pretrained MDMs.

Sijin Chen, Yinuo Ren, Heyang Zhao et al. · arXiv.org · 0 citations