Jingwei Ji

2 papers indexed

arxivmath.OCcs.LG2026-07-21

Online Optimization of Difference-of-Convex Compositions with Smooth Mappings

We study online optimization for a broad class of structured non-convex non-smooth problems where each loss is a composition of a difference-of-convex function with a smooth mapping, and the feasible region is defined by constraint functions of the same kind. We propose a time-sm…

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arxivcs.LG2026-07-20

Weak-to-Strong Learning in Decision Making

Jingwei Ji, Renyuan Xu

Many operational decisions rely on predictive models that estimate uncertain outcomes conditional on observable contexts. Training such models, however, often faces a fundamental data asymmetry: labeled outcomes are scarce or costly to obtain, while contextual covariates are abun…

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