arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.09743math.OC
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基于广义自适应划分的固定追索权两阶段随机规划方法

Generalized Adaptive Partition-based Method for Two-Stage Stochastic Programs with Fixed Recourse

Cristian Ramirez-Pico, Eduardo Moreno

摘要:

当不确定性空间既可以是离散分布也可以是连续分布时,给出了一种求解具有固定补偿的两阶段随机问题的方法。给定一个分区的不确定性空间,该方法是解决一个离散的问题与分区的每个元素(子区域的不确定性空间)的一个方案。固定第一阶段的变量,我们制定了第二阶段的子问题为每个元素,并利用这些问题的对偶信息,我们提供的分区必须满足的条件,以获得最优解。这些条件提供了如何细化分区的指导,迭代地收敛到最优解。计算实验结果表明,该方法如何自动细化的不确定性空间的分区在感兴趣的区域的问题。我们的算法是Song & Luedtke(2015)针对离散分布提出的基于自适应划分的方法的推广,将其适用性扩展到更一般的情况。

英文摘要:

We present a method to solve two-stage stochastic problems with fixed recourse when the uncertainty space can have either discrete or continuous distributions. Given a partition of the uncertainty space, the method is addressed to solve a discrete problem with one scenario for each element of the partition (sub-regions of the uncertainty space). Fixing first stage variables, we formulate a second stage subproblem for each element, and exploiting information from the dual of these problems, we provide conditions that the partition must satisfy to obtain the optimal solution. These conditions provide guidance on how to refine the partition, converging iteratively to the optimal solution. Results from computational experiments show how the method automatically refines the partition of the uncertainty space in the regions of interest for the problem. Our algorithm is a generalization of the adaptive partition-based method presented by Song & Luedtke (2015) for discrete distributions, extending its applicability to more general cases.

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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