一个面向语义服务发现的QoS本体

随着网络上服务数量的急剧增长，用户使用服务有了更多的选择。服务的QoS属性是用户实施服务选择的一个重要准则。为了实现支持QoS的语义服务匹配和服务选择，本文对语义QoS规范进行了深入研究，并根据QoS和应用的相关性提出了一种分层的QoS语义模型。该模型使得服务提供者可以基于SLA在不同的场景下为用户提供不同层次的QoS保障。在此模型基础上，本文对支持QoS的语义服务匹配与服务选择算法进行了详细讨论。此外，还给出了一个基于QoS本体的服务发现框架。

A QoS Ontology for Semantic Service Discovery

With the blooming of Web services, there are more and more available services on the Internet. The services＇ non-functional aspect, i.e. quality of s ervice （QoS） ,is an important criteria for service matching, ranking and selection. To enable semantic service discovery with the QoS support, a hiera achical QoS semantics model is proposed in this article according to the QoS relations with applications. The model enables the service providers to pro vide different levels of QoS ensurance based on SLA under different scenarios. Based on this model, the paper details the algorithms for QoS matchmaking and service ranking. Finally, the paper gives the framework for service discovery with QoS ontology.