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Showing papers from East China Normal Univeristy Show all papers

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OPSRL-SSP: Optimistic Posterior Sampling for Stochastic Shortest Path with Minimax-Optimal Regret

YIMING XU, Xian Wei, Cheng Chen

Sydney Poster Session 3, Wed, Dec 9, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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57%Worth a look
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Fully First-Order Algorithms for Online Non-Convex Bilevel Optimization

Tingkai Jia, Ting Wang, Cheng Chen

Sydney Poster Session 5, Thu, Dec 10, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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Achieving Better Local Regret Bound for Online Non-Convex Bilevel Optimization

An adaptive algorithm achieves optimal O(1+V_T) local regret for online non-convex bilevel optimization with O(T log T) gradient evaluations, and a window-based method attains optimal Ω(T/W²) window-averaged regret via single-loop updates.

Tingkai Jia, Haiguang Wang, Ting Wang, Cheng Chen

Sydney Poster Session 3, Wed, Dec 9, 10:00 AM–1:00 PM, Hall 1-4 · Published 2026

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AI panel: 5 of 20 reviewers recommend it
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medium 2/10
strict 1/5