基于QoS的P2P服务发现算法的研究  

Research of P2P service discovery algorithm based on QoS

作　　者：高晓燕[1] 

机构地区：[1]华北科技学院计算机学院,北京101601

出　　处：《计算机工程与科学》2013年第6期42-46,共5页Computer Engineering & Science

基　　金：青海省自然科学基金资助项目(2012-Z-935Q);国家自然科学基金资助项目(61163050)

摘　　要：目前的P2P网络服务缺乏服务质量保证的考虑,不能充分利用某些网络节点特殊的服务质量属性。针对现有P2P服务发现的问题,为了提高P2P服务发现的效率,结合QoS属性和P2P网络特点,提出一种基于QoS的P2P服务发现算法模型。首先定义了基于QoS的P2P服务描述,并在服务描述中引入语义信息,利用这些语义信息来提高服务发现过程中服务匹配的准确性,在此基础上建立了QoS保证的P2P服务发现模型,并给出了P2P服务发现问题的遗传求解算法。最后,通过实验分析了服务发现算法的可行性和有效性。The existing P2P network service discovery algorithms are lack of service quality assurance consideration, and cannot fully utilize the specific service quality attributes of some nodes in the net- works. In order to improve the efficiency of P2P networks service discovery, this paper proposed a P2P service discovery algorithm based on QoS by combining QoS attributes and P2P characteristics, we first defined description of P2P service based on QoS and introduces semantic information into the service de- scription in order to improve the accuracy of service matching. On this basis, we built up the P2P service discov- ery model with QoS guarantees and provided a genetic algorithm for P2P service discovery. At last, the feasibili- ty and effectiveness of the service discovery algorithm was performed through the experiments.

关 键 词：服务质量 对等网络 服务 服务发现 遗传算法 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]