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This paper studies the polynomial optimization problem whose feasible set is a union of several basic closed semialgebraic sets. We propose a unified hierarchy of Moment-SOS relaxations to solve it globally. Under some assumptions, we prove…

Optimization and Control · Mathematics 2024-05-21 Jiawang Nie , Linghao Zhang

This paper studies generalized semi-infinite programs (GSIPs) given by polynomials. We propose a hierarchy of polynomial optimization relaxations to solve them. They are based on Lagrange multiplier expressions and polynomial extensions.…

Optimization and Control · Mathematics 2025-04-15 Xiaomeng Hu , Jiawang Nie

This paper studies the copositive optimization problem whose objective is a sparse polynomial, with linear constraints over the nonnegative orthant. We propose sparse Moment-SOS relaxations to solve it. Necessary and sufficient conditions…

Optimization and Control · Mathematics 2026-04-02 Suhan Zhong , Jinling Zhou , Jiawang Nie , Xindong Tang

This paper studies Nash equilibrium problems that are given by polynomial functions. We formulate efficient polynomial optimization problems for computing Nash equilibria. The Lasserre type Moment-SOS relaxations are used to solve them.…

Optimization and Control · Mathematics 2023-05-08 Jiawang Nie , Xindong Tang

This chapter investigates how symmetries can be used to reduce the computational complexity in polynomial optimization problems. A focus will be specifically given on the Moment-SOS hierarchy in polynomial optimization, where results from…

Optimization and Control · Mathematics 2023-05-10 Philippe Moustrou , Cordian Riener , Hugues Verdure

Polynomial optimization problems represent a wide class of optimization problems, with a large number of real-world applications. Current approaches for polynomial optimization, such as the sum of squares (SOS) method, rely on large-scale…

Optimization and Control · Mathematics 2025-07-04 Dimitris Bertsimas , Dick den Hertog , Thodoris Koukouvinos

In this paper, we study the global optimality of polynomial portfolio optimization (PPO). The PPO is a kind of portfolio selection model with high-order moments and flexible risk preference parameters. We introduce a perturbation sample…

Optimization and Control · Mathematics 2023-09-06 Liu Yang , Yi Yang , Suhan Zhong

We study an optimization problem in which the objective is given as a sum of logarithmic-polynomial functions. This formulation is motivated by statistical estimation principles such as maximum likelihood estimation, and by loss functions…

Optimization and Control · Mathematics 2026-01-07 Jiyoung Choi , Jiawang Nie , Xindong Tang , Suhan Zhong

Global polynomial optimization is an important tool across applied mathematics, with many applications in operations research, engineering, and physical sciences. In various settings, the polynomials depend on external parameters that may…

Optimization and Control · Mathematics 2024-06-14 Richard L. Zhu , Mathias Oster , Yuehaw Khoo

This paper is concerned with polynomial optimization problems. We show how to exploit term (or monomial) sparsity of the input polynomials to obtain a new converging hierarchy of semidefinite programming relaxations. The novelty (and…

Optimization and Control · Mathematics 2020-05-14 Jie Wang , Victor Magron , Jean-Bernard Lasserre

The moment-sum of squares hierarchy by Lasserre has become an established technique for solving polynomial optimization problems. It provides a monotonically increasing series of tight bounds, but has well-known scalability limitations. For…

Optimization and Control · Mathematics 2024-02-09 Daria Shaydurova , Volker Kaibel , Sebastian Sager

This paper studies distributionally robust optimization (DRO) with polynomial robust constraints. We give a Moment-SOS relaxation approach to solve the DRO. This reduces to solving linear conic optimization with semidefinite constraints.…

Optimization and Control · Mathematics 2025-05-13 Jiawang Nie , Suhan Zhong

This paper studies bilevel polynomial optimization problems. To solve them, we give a method based on polynomial optimization relaxations. Each relaxation is obtained from the Kurash-Kuhn-Tucker (KKT) conditions for the lower level…

Optimization and Control · Mathematics 2021-06-11 Jiawang Nie , Li Wang , Jane Ye , Suhan Zhong

This paper considers polynomial optimization with unbounded sets. We give a homogenization formulation and propose a hierarchy of Moment-SOS relaxations to solve it. Under the assumptions that the feasible set is closed at infinity and the…

Optimization and Control · Mathematics 2026-05-05 Lei Huang , Jiawang Nie , Ya-Xiang Yuan

This paper studies convex Generalized Nash Equilibrium Problems (GNEPs) that are given by polynomials. We use rational and parametric expressions for Lagrange multipliers to formulate efficient polynomial optimization for computing…

Optimization and Control · Mathematics 2021-11-09 Jiawang Nie , Xindong Tang

Lasserre's moment-SOS hierarchy consists of approximating instances of the generalized moment problem (GMP) with moment relaxations and sums-of-squares (SOS) strenghtenings that boil down to convex semidefinite programming (SDP) problems.…

Optimization and Control · Mathematics 2022-08-05 Matteo Tacchi

We consider stochastic optimization problems which use observed data to estimate essential characteristics of the random quantities involved. Sample average approximation (SAA) or empirical (plug-in) estimation are very popular ways to use…

Statistics Theory · Mathematics 2021-03-16 Darinka Dentcheva , Yang Lin

We introduce a sublevel Moment-SOS hierarchy where each SDP relaxation can be viewed as an intermediate (or interpolation) between the d-th and (d+1)-th order SDP relaxations of the Moment-SOS hierarchy (dense or sparse version). With the…

Optimization and Control · Mathematics 2021-01-14 Tong Chen , Jean-Bernard Lasserre , Victor Magron , Edouard Pauwels

This paper studies the hierarchy of sparse matrix Moment-SOS relaxations for solving sparse polynomial optimization problems with matrix constraints. First, we prove a sufficient and necessary condition for the sparse hierarchy to be tight.…

Optimization and Control · Mathematics 2025-10-06 Jiawang Nie , Zheng Qu , Xindong Tang , Linghao Zhang

Optimization over non-negative polynomials is fundamental for nonlinear systems analysis and control. We investigate the relation between three tractable relaxations for optimizing over sparse non-negative polynomials: sparse sum-of-squares…

Optimization and Control · Mathematics 2020-01-13 Yang Zheng , Giovanni Fantuzzi , Antonis Papachristodoulou
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