arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.04100math.OCcs.MA
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基于分布梯度计算的光滑精确罚函数的网络Optimization

Network Optimization via Smooth Exact Penalty Functions Enabled by Distributed Gradient Computation

Priyank Srivastava, Jorge Cortes

摘要:

本文提出了一种分布式算法,用于解决具有可分离目标函数和局部耦合约束的最优化问题。我们的策略是基于重新制定了原来的约束问题的无约束优化的光滑(连续可微)精确罚函数。即使在原始最优化问题的可分性假设下,以分布式方式计算该罚函数的梯度也是具有挑战性的。我们的技术方法表明,梯度的分布式计算问题可以用公式表示为由可分离的问题数据定义的线性代数方程系统。为了解决这个问题,我们设计了一个指数快速,输入到状态稳定的分布式算法,不需要单个代理矩阵是可逆的。我们采用这种策略来计算当前网络状态下的罚函数的梯度。我们的分布式算法求解器的原始约束最优化问题互连此估计与处方的代理遵循产生的方向。数值模拟说明了该算法的收敛性和鲁棒性。

英文摘要:

This paper proposes a distributed algorithm for a network of agents to solve an optimization problem with separable objective function and locally coupled constraints. Our strategy is based on reformulating the original constrained problem as the unconstrained optimization of a smooth (continuously differentiable) exact penalty function. Computing the gradient of this penalty function in a distributed way is challenging even under the separability assumptions on the original optimization problem. Our technical approach shows that the distributed computation problem for the gradient can be formulated as a system of linear algebraic equations defined by separable problem data. To solve it, we design an exponentially fast, input-to-state stable distributed algorithm that does not require the individual agent matrices to be invertible. We employ this strategy to compute the gradient of the penalty function at the current network state. Our distributed algorithmic solver for the original constrained optimization problem interconnects this estimation with the prescription of having the agents follow the resulting direction. Numerical simulations illustrate the convergence and robustness properties of the proposed algorithm.

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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