arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1607.00600math.OC
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具有耦合约束的多Agent分布式optimization的对偶分解

Dual decomposition for multi-agent distributed optimization with coupling constraints

Alessandro Falsone, Kostas Margellos, Simone Garatti, Maria Prandini

摘要:

我们研究分布式优化在一个合作的多代理设置,其中代理必须同意共享资源的使用,并可以通过一个随时间变化的网络,以达到这一目的。每个代理都有自己的决策变量,这些变量应该被设置为使其受局部约束的个体目标函数最小化。资源共享是通过耦合约束,涉及代理的个人功能,每个依赖于一个单一的代理的决策变量的总和的非正性建模。我们提出了一种新的分布式算法,以最小化受局部和耦合约束的代理的目标函数的总和,其中对偶分解和邻近最小化相结合的迭代方案。值得注意的是,信息的隐私得到保证,因为只有与耦合约束相关联的对偶优化变量由代理交换。在凸性假设下,结合适当的连通性的通信网络的属性,我们能够证明,代理达成共识的一些最优解的集中式对偶问题对应,而原始变量收敛到集中式原始问题的优化器集。所提出的方法的有效性证明了在一个插件的电动汽车充电问题。

英文摘要:

We study distributed optimization in a cooperative multi-agent setting, where agents have to agree on the usage of shared resources and can communicate via a time-varying network to this purpose. Each agent has its own decision variables that should be set so as to minimize its individual objective function subject to local constraints. Resource sharing is modeled via coupling constraints that involve the non-positivity of the sum of agents' individual functions, each one depending on the decision variables of one single agent. We propose a novel distributed algorithm to minimize the sum of the agents' objective functions subject to both local and coupling constraints, where dual decomposition and proximal minimization are combined in an iterative scheme. Notably, privacy of information is guaranteed since only the dual optimization variables associated with the coupling constraints are exchanged by the agents. Under convexity assumptions, jointly with suitable connectivity properties of the communication network, we are able to prove that agents reach consensus to some optimal solution of the centralized dual problem counterpart, while primal variables converge to the set of optimizers of the centralized primal problem. The efficacy of the proposed approach is demonstrated on a plug-in electric vehicles charging 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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