多個體系統(tǒng)分布式對偶優(yōu)化算法的研究
[Abstract]:In this paper, from the point of view of system cybernetics, the problem of Push-sum consistency for switched networks with information exchange delay is studied. At the same time, the distributed duality optimization problem of directed networks with sometimes ductility and no delay is studied. The results are not only helpful to reveal the root causes and internal mechanism of various natural population phenomena, but also to optimize the design of some parameters so as to make them more widely used in engineering. The main work of this paper is divided into two parts: in the first part, based on the research of Push-sum distributed duality optimization algorithm for fixed undirected networks, we further study the Push-sum distributed dual optimization algorithm for directed switched networks. The conclusion takes advantage of the remarkable advantage of Push-sum, that is, it does not necessarily require that the adjacency matrix characterizing the topological structure of the network is double random, and under the condition of strongly connective period of switched networks, The proposed optimization algorithm can still guarantee the consistency of all individuals in the network, that is, convergence to the real average value, and the optimal objective function of the network. In the second part, the Push-sum consistency of handoff networks with delay in the process of information exchange is studied, and the distributed dual average convex optimization problem in the case of delay is further studied. Most of the distributed optimization algorithms in multi-individual systems assume that each individual transmits information between each other in a timely and reliable manner, but it is widely used in practical applications. Due to data packet loss or external interference, information transmission between individuals in the network is delayed. In this paper, based on the distributed dual convex optimization algorithm of Push-sum in fixed network, by extending the dimension of the system, the optimization problem with time delay is transformed into an optimization problem without delay, and the distributed Push-sum average consistency algorithm is further based on it. It is proved that the proposed optimization algorithm is consistent with the exponential convergence rate and ensures the optimization of the objective function of the whole network. In a word, the whole thesis mainly extends the Push-sum distributed dual average convex optimization algorithm of fixed network to the Push-sum distributed dual average convex optimization algorithm of directed switched network. In the second part, the limited consistency of unbalanced networks with communication delay is used to prove the convergence of distributed convex optimization algorithms for unbalanced networks with communication delay.
【學位授予單位】:安徽理工大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:O157.5;TP301.6
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