基于广义随机着色Petri网的Web服务组合模型  

Web Service Composition Model Based on Generalized Stochastic Colored Petri Nets

作　　者：杨年华[1] 虞慧群[2] 郭新顺[1] 

机构地区：[1]上海对外贸易学院商务信息学院,上海201620 [2]华东理工大学计算机科学与工程系,上海200237

出　　处：《计算机科学》2012年第4期142-144,158,共4页Computer Science

基　　金：国家自然科学基金(60473055;60773094);上海市曙光计划(07SG32);上海市高校"085工程"项目;上海市教委科研创新项目(12ZS170)资助

摘　　要：给出了广义随机着色Petri网(GSCPN)和基于GSCPN的Web服务模型,实现了Web服务QoS和数据的表示,并给出了基于GSCPN的服务组合运算方法。用模型的层次化方法来降低模型的复杂性,一定程度上减轻了模型状态爆炸问题。分析了组合运算的性质,探讨了模型的性质和QoS分析方法。A generalized stochastic colored Petri net（GSCPN） and a Web service model based on GSCPN were proposed.QoS and data representations were realized in this model.Web service composition algorithms based on GSCPNs were proposed.A hierarchical method for GSCPN was proposed for reducing the complexity of a Web service model and mitigating the state explosion problem partly.Properties of composition operations were analyzed.Approaches of analyzing properties and QoS of the model were investigated.

关 键 词：PETRI网 WEB服务 服务组合 建模 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]