基于QoS的Web服务发现技术的研究

Research on Web Service Discovery Technology Based on QoS

为了满足用户对带有QoS约束的Web服务请求的需求,就需要建立一种能够按QoS值进行查询服务的方法。服务的QoS描述具有正和负两个方面的属性,因此如何量化成为一个具有成为查询依据的值成为该问题的的关键。给出一种对服务QoS量化计算的方法,可以把一组具有相同功能服务的QoS的进行量化,并作为用户需求发现的依据,从而为解决基于QoS约束的Web服务发现问题提出了一种有效的方法。

In order to satisfy the request of users with QoS constraints on the Web service, it＇s necessary to establish a method to inquiry Web service by the QoS value, the QoS of Web service description has both negative attributes and positive attributes, so the key is how to quantify QoS of the Web service. Presents a quantitative calculation method for QoS of Web service, uses this method to quantify the QoS , and use the results to select a Web service, so as to present an effective method to solve the QoS-based Web service discovery problem.