| 一类分层非结构化P2P系统的随机优化 |
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| 引用本文： | 徐陈锋,奚宏生,江琦,殷保群. 一类分层非结构化P2P系统的随机优化[J]. 系统科学与数学, 2007, 27(3): 412-421 |
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| 作者姓名： | 徐陈锋 奚宏生 江琦 殷保群 |
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| 作者单位： | 中国科学技术大学网络传播系统与控制联合实验室,合肥,230027 |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家自然科学基金;安徽省自然科学基金;CNGI项目 |
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| 摘 要： | 对于一类利用中心式构架和分布式构架各自优点的分层非结构化P2P系统,通过定义一种Markov切换空间模型来描述其动态组划分切换行为,从而导出相应的系统性能优化问题.同时还在Markov决策过程理论的基础上给出了关于性能指标的参数化梯度优化算法,并通过相应的实例仿真验证了算法的有效性.
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| 关 键 词： | Markov决策过程 分层非结构化P2P 超级节点 |
| 收稿时间： | 2007-05-08 |
| 修稿时间： | 2007-05-08 |
Stochastic Optimization for a Class of Hierarchical UnstructuredP2P System |
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| Xu Chenfeng,Xi Hongsheng,Jiang Qi,Yin Baoqun. Stochastic Optimization for a Class of Hierarchical UnstructuredP2P System[J]. Journal of Systems Science and Mathematical Sciences, 2007, 27(3): 412-421 |
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| Authors: | Xu Chenfeng Xi Hongsheng Jiang Qi Yin Baoqun |
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| Affiliation: | Joint Lab of Network Communication System & Control, University of Science and Technology of China, Hefei 230027 |
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| Abstract: | For a class of hierarchical unstructured P2P systems, a Markov switching-space model is introduced to describe their behavior of dynamic grouping. It is also formulated as a optimization problem based on Markov decision processes. Also parameterized gradient algorithm is provided to optimize the performance, followed by the corresponding simulations and discussions. |
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| Keywords: | Markov decision processes hierarchical unstructered P2P supper peer |
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