基于语义扩展类型论的云服务替换性判定研究  

Determining substitutability of cloud services supported by semantically extended type theory

作　　者：王先清[1,2] 黄昌勤[1,3] 罗旋[1] 聂瑞华[1] 汤庸[1] 梅晓勇[1] 

机构地区：[1]华南师范大学教育信息技术学院,广东广州510631 [2]广东科学技术职业学院艺术设计学院,广东广州510640 [3]浙江大学电子服务研究中心,浙江杭州310027

出　　处：《通信学报》2016年第2期20-30,共11页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61370229;No.61370178);国家科技支撑计划基金资助项目(No.2013BAH72B01);教育部-中国移动基金资助项目(No.MCM20130651);广东省自然科学基金资助项目(No.S2013010015178);广东省科技计划基金资助项目(No.2014B010103004;No.2014B010117007;No.2015A030401087;No.2015B010110002);广东省教育厅科技创新基金资助项目(No.2012KJCX0037);广州市科技基金资助项目(No.2014Y2-00006)~~

摘　　要：云计算环境下服务的动态性和易失效性是云应用的重要挑战,服务替换是其主要对策和关键研究问题。在类型论的支持下提出了一种新的云服务替换判定方法,该方法首先对会话类型论进行语义扩展以建模云服务行为,设计了典型云服务QoS类型实现服务质量判断,然后构造了语义会话类型和QoS类型的各子类型规则,最后以此完成了服务一致性和上下文兼容性命题判定与实施。通过应用判定实例展示和实验效果分析,表明该判定方法可行,并能为组合服务应用带来更高的执行成功率。In cloud environments, the high dynamics and more service failures were great obstacles to cloud applications, service substitution was a key research issue and also was a main solution to these challenges. A method of determining substitutability of cloud services was proposed using type theory, in which session types were semantically extended for modeling the behaviors of cloud service, QoS such as price, reliability were introduced as QoS type, and a series of sub- typing rules were constructed for SST and QoST. After that, determining consistency and context compatibility of ser- vices were put into practice. The method was proved feasibly by a case determining, and the experimental results show that it brings higher success rate of execution.

关 键 词：云服务 类型理论 会话类型 服务替换 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]