collaborators

6 papers

math.OC2026

Stability of Differential Stochastic Variational Inequalities with History-Dependent Responses and Transfer Learning

Xiaojun Chen, Jian Guo, Xin Guo +1

In this paper, we propose and study a class of differential stochastic variational inequalities (DSVIs), in which an ordinary differential equation (ODE) is coupled with history-de…

math.OC2026

Bayesian distributionally robust variational inequalities: regularization and quantification

Wentao Ma, Zhiping Chen, Xiaojun Chen

We propose a Bayesian distributionally robust variational inequality (DRVI) framework that models the data-generating distribution through a finite mixture family, which allows us…

math.OC2026

Complexity of Projected Gradient Methods for Strongly Convex Optimization with Hölder Continuous Gradient Terms

Xiaojun Chen, C. T. Kelley, Lei Wang

This paper studies the complexity of projected gradient descent methods for a class of strongly convex constrained optimization problems where the objective function is expressed a…

math.OC2025

Differential Stochastic Variational Inequalities with Parametric Optimization

Xiaojun Chen, Jian Guo, Guan Wang

The differential stochastic variational inequality with parametric convex optimization (DSVI-O) is an ordinary differential equation whose right-hand side involves a stochastic var…

math.OC2025

A New Complexity Result for Strongly Convex Optimization with Locally -H{ö}lder Continuous Gradients

Xiaojun Chen, C. T. Kelley, Lei Wang

In this paper, we present a new complexity result for the gradient descent method with an appropriately fixed stepsize for minimizing a strongly convex function with locally -H…

math.OC2025

Robust Solutions of Nonlinear Least Squares Problems via Min-max Optimization

Xiaojun Chen, Carl Kelley

This paper considers robust solutions to a class of nonlinear least squares problems using min-max optimization approach. We give an explicit formula for the value function of the…