%0 Journal Article
%T A Dynamic Web Service Composition Process Definition Meta-Model and its Application<br>动态服务聚合流程定义元模型及其应用
%A LI Guo-Zhong
%A LIU Shu-Lei
%A WU Qing-Yun
%A JING Ning
%A <br>李国中
%A 刘书雷
%A 吴秋云
%A 景宁
%J 计算机科学
%D 2007
%I 
%X One of important issues of process-driven dynamic Web Services composition is supporting dynamic variation of Web Services.To satisfy this request the designing model of traditional workflow must be improved.This paper proposes the concept of SN and SG to adapt to the dynamic variation of Web Services,and proposes a meta-model of Web Services composition process definition to satisfy the need of dynamic Web Services composition process modeling.According to the meta-model,a new Web Services Composition Process/Resource model(WSCP/R-net)is proposed based on extended Workflow-net.WSCP/R-net effectively resolves the problems on uncertain activity option and dynamic variation of service in process model.The application of WSCP/R-net in Web service composition process modeling is illustrated in city emergency disposal project.
%K Dynamic Web services composition
%K Process modeling
%K Process definition meta-model
%K Extended workflow-net
%K WSCP/R-net<br>动态服务聚合
%K 流程建模
%K 流程定义元模型
%K 扩展工作流网
%K WSCP／R-net
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=4CC8E272100CC8033920CE9212FF8577&yid=A732AF04DDA03BB3&vid=339D79302DF62549&iid=0B39A22176CE99FB&sid=C753EB8AC8F551B9&eid=BB0EA31DB1B01173&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=6