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arXiv 2007.15737math.OC
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Heaviside集约束Optimization:最优性与牛顿法

Heaviside Set Constrained Optimization: Optimality and Newton Method

Shenglong Zhou, Lili Pan, Naihua Xiu

摘要:

现实世界中的数据经常涉及二元状态:真或假,正或负,相似或不相似,垃圾或非垃圾,以及仅举几例,应用于回归,分类问题等。为了表征二元状态,理想的函数之一是Heaviside阶梯函数,它为一种状态返回1,为另一种状态返回0。因此,它是不连续的。正因为如此,处理二元状态的传统方法极大地受益于其连续代理。本文以Heaviside阶梯函数为目标,研究了Heaviside集约束优化问题:计算了可行集的切锥和法锥,建立了几个一阶最优性充分必要条件最优性条件,并发展了一个局部平方收敛的Newton型方法.

英文摘要:

Data in the real world frequently involve binary status: truth or falsehood, positiveness or negativeness, similarity or dissimilarity, spam or non-spam, and to name a few, with applications into the regression, classification problems and so on. To characterize the binary status, one of the ideal functions is the Heaviside step function that returns one for one status and zero for the other. Hence, it is of dis-continuity. Because of this, the conventional approaches to deal with the binary status tremendously benefit from its continuous surrogates. In this paper, we target the Heaviside step function directly and study the Heaviside set constrained optimization: calculating the tangent and normal cones of the feasible set, establishing several first-order sufficient and necessary optimality conditions, as well as developing a Newton type method that enjoys locally quadratic convergence and excellent numerical performance.

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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