基于开销分摊的数据网格副本创建策略  

The strategy of creating replica based on cost shared in data grid

作　　者：吴长泽[1] 陈蜀宇[2] 田东[1] 

机构地区：[1]重庆大学计算机学院,贵州贵阳550000 [2]重庆大学软件学院,重庆400044

出　　处：《华中科技大学学报（自然科学版）》2007年第S2期94-97,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-04-0843);贵州省工业科技攻关计划资助项目(黔科合gz字(2007)3005)

摘　　要：针对数据网格中自治节点创建副本时,缺乏全局信息只能考虑本地利益最大化而增大全局网络开销的问题,构建了一种开销分摊的副本创建激励机制,通过创建副本节点与受益节点共同分摊副本创建开销来获得本地与全局利益之间的均衡.然后基于这种思想提出副本创建算法,并证明了该算法的正确性和有效性,最后模拟实验表明在满足自治的前提下该策略能较好地取得全局优化.Aimed at the problem of that the autonomous node of data grid just optimize local cost and resulted in increasing social cost due to lacking social information,the strategy of creating replica based on cost shared is presented.It focus on balance local and social benefits by cost shared with replication nodes and beneficial nodes.Then,given creating replica algorithm and proved it's accuracy and effectivity.At last,simulation shows the strategy of autonomous node can meet social optimum.

关 键 词：数据网格 副本创建 开销分摊 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]