【摘要】 由于传统的基于关键字和简单分类的Web服务发现机制缺少服务质量(QoS)考虑,因此不能很好满足用户的需求。针对该问题,提出一种基于QoS的Web服务发现模型,通过引入QoS代理机制,对终端用户使用Web服务后反馈的QoS信息进行量化和度量处理,以支持基于QoS的Web服务发现;在此基础上,根据Web服务的动态性特点和不同用户的QoS需求,给出了基于用户反馈的QoS数据度量方法,并提出一种基于QoS的Web服务发现算法。实验结果表明,提出的Web服务发现方法能够较好地满足用户的需求。更多还原

【Abstract】 The traditional Web service discovery mechanism that is based on keywords and simple classification can not satisfy users’ requirements due to the lack of quality of service(QoS).With this problem in mind,a QoS-based Web service discovery model is proposed.In order to support QoS-based Web Services discovery,the QoS broker mechanism is introduced into the traditional web service discovery model,which quantifies and measures the QoS information of users’feedback after they used the web services.On the basis of these,according to the characteristics of dynamic nature of web services and QoS requirements of different users,an approach is described to measure the QoS data based on users’feedback.A QoS-based web service discovery algorithm is also proposed.The experimental results show that the web service discovery methods meet the needs of users better.更多还原