基于并发协商的Web服务发现模型

在服务组合中,快速地从众多功能相同的Web服务中发现最优服务是一个实际而又亟待解决的问题. 针对这个问题,提出了一种基于并发协商的Web服务发现模型. 该模型在传统的Web服务发现方法上加入并发协商,先从功能相同的Web服务中发现满足QoS需求的服务,接着使用效用函数选择最优的服务. 最后通过实验得出协商后的效用值明显好于无协商的效用值,且有无协商的算法执行时间相似,验证了模型的正确性和有效性. 

A Web Service Discovery Model Based on Concurrent Negotiation

Finding the best service rapidly from multiple Web services with same function is practical and necessary in the services composition. In order to solve the problem, a Web service discovery model based on concurrent negotiation was proposed and outlined in this paper, which added concurrent negotiation to the traditional Web services discovery method. Firstly, some Web services those satisfied the needs of QoS were discovered from existing Web services with same function and then utility function was applied to get the best service. The experiment results show that the utility value gotten by concurrent negotiation is better than that of non-negotiation, both time-consuming are almost the same, and the discovery function of the model with concurrent negotiation is validity.