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arXiv 1612.06997math.OC
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不可行线性规划的线性化

Linear Superiorization for Infeasible Linear Programming

Yair Censor, Yehuda Zur

摘要:

线性优化(Linear Superiorization,缩写:LinSup)考虑的是线性规划(LP)问题,其中约束和目标函数都是线性的。它允许将可行性寻求迭代过程的迭代转向可行点,这些可行点具有比没有优越化的相同可行性寻求迭代过程所达到的点更低(不一定是最小)的目标函数值。使用可行性寻求迭代过程,即使线性可行集是空的,也会收敛,LinSup生成一个迭代序列,该序列收敛到一个点,该点最小化测量线性约束违反的邻近函数。此外,由于LinSup的重复的目标函数减少步骤,这样的点将最有可能具有减少的目标函数值。我们提出了一个探索性的实验结果,说明了一个不可行的LP问题的行为LinSup。

英文摘要:

Linear superiorization (abbreviated: LinSup) considers linear programming (LP) problems wherein the constraints as well as the objective function are linear. It allows to steer the iterates of a feasibility-seeking iterative process toward feasible points that have lower (not necessarily minimal) values of the objective function than points that would have been reached by the same feasiblity-seeking iterative process without superiorization. Using a feasibility-seeking iterative process that converges even if the linear feasible set is empty, LinSup generates an iterative sequence that converges to a point that minimizes a proximity function which measures the linear constraints violation. In addition, due to LinSup's repeated objective function reduction steps such a point will most probably have a reduced objective function value. We present an exploratory experimental result that illustrates the behavior of LinSup on an infeasible LP problem.

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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