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arXiv 1809.09043math.OC
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基于矩和半定规划的全局多项式optimization的实验方法

An experimental approach for global polynomial optimization based on Moments and Semidefinite Programming

María López Quijorna

摘要:

在这篇文章中,我们提供了一个实验算法,在许多情况下,给我们一个上界的一个真正的多项式$\R^{n}$的整体下确界。众所周知,在$\R^{n}$上求一个实多项式的全局下确界,往往归结为求解一系列半正定规划,称为矩松弛。我们提出的算法涉及到解决一系列的半正定规划,其可行集包含在一个时刻松弛的可行集。我们的附加约束试图引发一个平坦性条件,如Curto和Fialkow所使用的,用于计算的时刻。在最后,我们提出的算法的应用程序的非负多项式的平方和的数值结果。我们还提供了数值结果的应用程序的一个版本的算法的基础上提出的方法由聂,Demmel和Sturmfels的问题,最小化多项式的梯度品种。

英文摘要:

In this article we provide an experimental algorithm that in many cases gives us an upper bound of the global infimum of a real polynomial on $\R^{n}$. It is very well known that to find the global infimum of a real polynomial on $\R^{n}$, often reduces to solve a hierarchy of positive semidefinite programs, called moment relaxations. The algorithm that we present involves to solve a series of positive semidefinite programs whose feasible set is included in the feasible set of a moment relaxation. Our additional constraint try to provoke a flatness condition, like used by Curto and Fialkow, for the computed moments. At the end we present numerical results of the application of the algorithm to nonnegative polynomials which are not sums of squares. We also provide numerical results for the application of a version of the algorithm based on the method proposed by Nie, Demmel and Sturmfels for the problem of minimizing a polynomial over its gradient variety.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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