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Author

Yi-Bo Wang

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#machine learning Preprint Sep 2026

From Switching to Dynamic Regret: A Simple Reduction via Unbiased Random Sequences

In non-stationary online learning, dynamic regret has attracted increasing attention as a measure of how well an online learner performs against a time-varying comparator sequence. Despite considerable advances, attaining optimal bounds for strongly convex and exp-concave losses often involves intricate analysis. In th...

Yi-Bo Wang, Wen-Hao Yang, Si-Fan Yang et al. · 0 citations
#machine learning Preprint Sep 2026

Projection-Free Multi-level Algorithms for Stochastic Constrained Compositional Optimization

This paper studies projection-free algorithms for stochastic constrained multi-level compositional optimization and proposes variance-reduced projection-free algorithms and establishes complexity guarantees under both the Frank-Wolfe gap and the gradient mapping criteria.

Wei Jiang, Si-Fan Yang, Wen-Hao Yang et al. · 0 citations
#machine learning Preprint Sep 2026

Solving Finite-sum Coupled Compositional Optimization via Multi-block-Single-probe Estimator

Traditional variance reduction methods (e.g., SPIDER, SARAH, STORM) have been extensively investigated for improving the convergence rates of stochastic optimization. These techniques typically maintain a sequence of estimators for a single function (or gradient) across iterations. However, what if we need to track mul...

Wei Jiang, Si-Fan Yang, Yi-Bo Wang et al. · 0 citations

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