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20162026
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math.OC2024

Strong Convergence of Relaxed Inertial Inexact Progressive Hedging Algorithm for Multi-stage Stochastic Variational Inequality Problems

Jiaxin Chen, Zunjie Huang, Haisen Zhang

A Halpern-type relaxed inertial inexact progressive hedging algorithm (PHA) is proposed for solving multi-stage stochastic variational inequalities in general probability spaces. T…

math.OC2023

Lagrangian dual method for solving stochastic linear quadratic optimal control problems with terminal state constraints

Haisen Zhang, Xianfeng Zhang

A stochastic linear quadratic (LQ) optimal control problem with a pointwise linear equality constraint on the terminal state is considered. A strong Lagrangian duality theorem is p…

math.OC2022

A prediction-correction ADMM for multistage stochastic variational inequalities

Ze You, Haisen Zhang

The multistage stochastic variational inequality is reformulated into a variational inequality with separable structure through introducing a new variable. The prediction-correctio…

math.OC2021

Finite Codimensionality Method in Infinite-dimensional Optimization Problems

Xu Liu, Qi Lü, Haisen Zhang +1

This paper is devoted to establishing an enhanced Fritz John type first-order necessary condition for a general constrained nonlinear infinite-dimensional optimization problem. Unl…

math.OC2018

Second Order Optimality Conditions for Optimal Control Problems of Stochastic Evolution Equations

Qi Lu, Haisen Zhang, Xu Zhang

In this paper, we establish some second order necessary/sufficient optimality conditions for optimal control problems of stochastic evolution equations in infinite dimensions. The…

math.OC2016

Optimal control problems of forward-backward stochastic Volterra integral equations with closed control regions

Tianxiao Wang, Haisen Zhang

Optimal control problems of forward-backward stochastic Volterra integral equations (FBSVIEs, in short) with closed control regions are formulated and studied. Instead of using spi…