arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.09420math.OCcs.SYeess.SY
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不确定变分不等式解集的概率可行性保证

Probabilistic feasibility guarantees for solution sets to uncertain variational inequalities

Filippo Fabiani, Kostas Margellos, Paul J. Goulart

摘要:

我们开发了一个数据驱动的方法来计算后验可行性证书的不确定性影响的变分不等式的解决方案集。具体而言,我们专注于变分不等式的实例与确定性映射和不确定的可行性集,并表示通过场景的不确定性。基于最新进展的情况下的方法文献,我们量化的鲁棒性的整个集合的解决方案的变分不等式,与可行性集使用的情况下的方法构建,对一个新的看不见的实现的不确定性。我们的研究结果扩展了现有的结果,通常施加一个假设,解决方案集是一个单例,并需要一定的非退化属性,从而提供概率的可行性保证任何可行解。我们表明,评估违反概率的一整套解决方案,而不是一个单例,需要枚举的支持约束,“形状”这一套。此外,我们提出了一个一般的程序来枚举的支持约束,不需要一个封闭的形式描述的解决方案集,这是不可能的。我们表明,强大的对策论问题可以通过不确定的变分不等式建模,并说明我们的理论结果,通过广泛的数值模拟的案例研究,涉及电动汽车充电协调问题。

英文摘要:

We develop a data-driven approach to the computation of a-posteriori feasibility certificates to the solution sets of variational inequalities affected by uncertainty. Specifically, we focus on instances of variational inequalities with a deterministic mapping and an uncertain feasibility set, and represent uncertainty by means of scenarios. Building upon recent advances in the scenario approach literature, we quantify the robustness properties of the entire set of solutions of a variational inequality, with feasibility set constructed using the scenario approach, against a new unseen realization of the uncertainty. Our results extend existing results that typically impose an assumption that the solution set is a singleton and require certain non-degeneracy properties, and thereby offer probabilistic feasibility guarantees to any feasible solution. We show that assessing the violation probability of an entire set of solutions, rather than of a singleton, requires enumeration of the support constraints that "shape" this set. Additionally, we propose a general procedure to enumerate the support constraints that does not require a closed form description of the solution set, which is unlikely to be available. We show that robust game theory problems can be modelling via uncertain variational inequalities, and illustrate our theoretical results through extensive numerical simulations on a case study involving an electric vehicle charging coordination problem.

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