论文标题
概率服务质量意识服务选择
Probabilistic Quality of Service aware Service Selection
论文作者
论文摘要
在软件即服务范式中，软件系统不再是在组织的边界内执行的代码，因此，相反，它们被视为动态变化的服务集合，集体执行，以追求共同的业务目标。服务选择的一个重要方面是确定服务的服务质量（QoS）是否满足客户端的QoS要求。 在现实的执行环境中，这样的QoS值可能会受到外部，不可控制的事件的影响，这使得服务提供商不可能确保满足由QoS配置文件所特征的值，自然会导致需要对QoS配置文件进行概率解释。 在这项工作中，我们提出：1）一个用于描述基于多元连续概率分布的概率QoS概况的模型，2）一种用于描述概率QoS需求的语言，以及3）一种自动程序，用于评估概率QoS轮廓是否满足概率QoS的要求。
In software-as-a-service paradigms software systems are no longer monolithic pieces of code executing within the boundaries of an organisation, on the contrary, they are conceived as a dynamically changing collection of services, collectively executing, in pursuit of a common business goal. An essential aspect of service selection is determining whether the Quality of Service (QoS) profile of a service satisfies the QoS requirements of a client. In realistic execution environments, such QoS values might be influenced by external, non-controllable events, making it impossible for the service provider to guarantee that the values characterised by a QoS profile will be met, naturally leading to the need of a probabilistic interpretation of QoS profile. In this work we propose: 1) a model for describing probabilistic QoS profiles based on multivariate continuous probability distributions, 2) a language for describing probabilistic QoS requirements, and 3) an automatic procedure for assessing whether a probabilistic QoS profile satisfies a probabilistic QoS requirement.
