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Author

Zi-Yi Chen

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#machine learning Preprint May 2026

From Dual Tracking to Clipping: Provably Faster Distributionally Robust Multi-Objective Optimization

This work introduces distributionally robust multi-objective optimization (DR-MOO), which minimizes multiple objectives under their respective worst-case distributions, and proposes Pareto-type solution concepts for DR-MOO and develops multi-gradient descent algorithms (MGDA) with provable guarantees.

Yu-Feng Yang, Fangning Zhuo, Zi-Yi Chen et al. · 0 citations
#machine learning Preprint Sep 2026

Towards Identifiable Representations under Misspecified Structure

This work characterize structural misspecification as a perturbed factor analysis problem, and establishes subspace identifiability under spectral separation and controlled perturbation, followed by component-wise identifiability under structural sparsity.

Yu-Ke Li, Yujia Zheng, Zi-Yi Chen et al. · 0 citations

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