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arXiv 1404.1963math.OC
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n维实空间中的双阱势函数及其Optimization--II部分

Double Well Potential Function and Its Optimization in the n-dimensional Real Space - Part II

Yong Xia, Ruey-Lin Sheu, Shu-Cherng Fang, Wenxun Xing

摘要:

在对比采取的双重方法寻找一个全局极小值的解决方案的双井势函数,在第二部分的文件,我们刻画了一个局部极小,局部最大,和全球最小直接从原始的一面。证明了对于一个“非奇异”双阱函数,最多存在一个局部但非全局的极小元和一个局部极大元。此外,当它存在时,局部最大化者被局部最小化者"包围”,这是因为局部最大化者的范数严格小于任何局部最小化者的范数。通过研究特定区间上的凸久期函数,我们建立了全局极小点、局部非全局极小点和局部极大点的若干最优性条件。这些条件导致三种算法用于识别给定双阱函数的不同类型的临界点。

英文摘要:

In contrast to taking the dual approach for finding a global minimum solution of a double well potential function, in Part II of the paper, we characterize a local minimizer, local maximizer, and global minimizer directly from the primal side. It is proven that, for a ``nonsingular" double well function, there exists at most one local, but non-global, minimizer and at most one local maximizer. Moreover, when it exists, the local maximizer is ``surrounded" by local minimizers in the sense that the norm of the local maximizer is strictly less than that of any local minimizer. We also establish some necessary and sufficient optimality conditions for the global minimizer, local non-global minimizer and local maximizer by studying a convex secular function over specific intervals. These conditions lead to three algorithms for identifying different types of critical points of a given double well function.

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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