论文部分内容阅读
现有的服务组合方法多是获取候选服务节点的信息,在集中式组合引擎上搜索路径。这种集中式方法不仅具有单点失效、可扩展性差等缺点,而且候选服务的QoS没有保证,服务搜索空间过大,组合效率较低。文章提出了一种分布式的服务组合方法(BDDSC),将分散在网络中性能有保证的服务节点构建成服务覆盖网络,使各个节点协作执行进行动态服务组合,可以进行保证QoS的服务组合,生成满足用户QoS要求的路径。实验表明,本文提出的方法有效且具有较高的服务组合成功率。
The existing service composition methods mostly obtain the information of the candidate service nodes and search the paths on the centralized composition engine. This centralized approach not only has the shortcomings of single-point failure and poor scalability, but also does not guarantee the QoS of candidate services. The service search space is too large and the combination efficiency is low. In this paper, a distributed service composition method (BDDSC) is proposed. The service nodes with guaranteed performance in the network are constructed into service overlay networks, and each node cooperates to perform dynamic service composition, which can guarantee service composition of QoS. Generate a path to meet user QoS requirements. Experiments show that the proposed method is effective and has a high success rate of service composition.