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作者机构:Department of Computer Science and Technology Anhui Normal University Wuhu 241003 China Engineering Technology Research Center of Network and Information Security Anhui Normal University Wuhu 241003 China
出 版 物:《Journal of Computational Information Systems》 (J. Comput. Inf. Syst.)
年 卷 期:2013年第9卷第14期
页 面:5627-5634页
核心收录:
主 题:Information systems
摘 要:In reputation systems, how to obtain node s reputation is a crucial issue. To solve this problem, a two-layer reputation search mechanism based on ant colony and grouping is proposed. The first layer is the monitoring platform. According to physical topology, it divides nodes into groups. Each group uses network segment as its identification, and it has a super node and a candidate node. The second layer includes a group management module and an ant colony algorithm. A source node sends its request to the monitoring platform. The latter checks whether the source node and destination node are in the same group. If it is met, the destination node s reputation will be searched in the group with the ant colony algorithm. Otherwise, this algorithm is used to find the super node in the group of the source node firstly. Then the algorithm is used to locate destination group among super nodes. Lastly, the required reputation is obtained. Simulation results show that the proposed mechanism can shorten search distance and search time effectively. 1553-9105/Copyright © 2013 Binary Information Press.