摘要
随着计算机和网络技术的不断发展,Web服务的不断普及,单个Web服务的调用已经不能满足服务请求者的需求,服务组合已成为了一种必然趋势。提出一种QoS感知的基于着色Petri网的Web服务动态组合模型(QWS-CPN),介绍了模型中的颜色集、守卫函数和弧函数等关键元素,并给出一种基于使用概率的QoS计算方法,让服务请求者在较短的时间内得到所需的Web服务。
With the continuous enhancement of computer and network technologies as well as the continuous population of web services,it no longer satisfies the service requestors＇ demands to call only one single web service.Service composition has become an inexorable trend.The paper puts forward a QoS-aware and color Petri net based web service dynamic composition model（QWS-CPN）,explains some vital elements in the model such as color aggregations,guard functions,and arc functions etc.,and introduces a usage probability based QoS calculation method in order to enable service requestors to obtain the required web services in just a short delay.
出处
《计算机应用与软件》
CSCD
2011年第5期102-105,共4页
Computer Applications and Software
基金
上海优青科研专项基金(szy09003)
