网格工作流中基于云评价的服务定位机制*

随着企业间竞争的日益激烈以及基于网格的电子商务的发展,如何有效提高企业间相互协作的网格工作流的效率成为关键.由于网格环境异构性、动态性和不确定性强等特点,网格服务是不确定的或定性的.网格是一个无尺度网络,利用网格中集散节点的性质,将网格工作流的服务定位集中于其上,再用云模型对网格服务进行定性定量转换,能更快地获得更高质量的服务,大大提高了网格工作流的效率.

Services location mechanism based on cloud evaluation in grid workflow

With the competition among enterprises becomes more intense and with the development of grid-based e-business, how to improve the efficiency of grid workflow is the key. Because grid has some characteristics such as dynamic, heterogeneous, scalable and autonomy, grid services are uncertain or qualitative. Grid is a scale-free network, and a method is presented which can acquire higher quality services and can improve the efficiency of grid workflow largely if it utilizes the characteristics of collected node of grid and use cloud model to transform the qualitative grid services into quantitative expression.