QoS aggregation for Web service composition using workflow patterns
QoS aggregation for Web service composition using workflow patterns
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DOI：
10.1109/edoc.2004.10027
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发表时间：
2004-09
期刊：
影响因子：
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通讯作者：
M. Jäger;Gregor Rojec-Goldmann;Gero Mühl
中科院分区：
文献类型：
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作者：
M. Jäger;Gregor Rojec-Goldmann;Gero Mühl
在Web服务领域的贡献已经确定，（a）发现广告和请求的服务和（B）非功能特性之间的语义描述的匹配-服务质量（QoS）-是Web服务的组合最重要的标准。引入了一种机制，通过聚合各个服务的QoS维度来确定Web服务组合的QoS。这允许验证为组合选择的服务集是否满足整个组合的QoS要求。执行的聚合建立在抽象组合模式之上，这些模式表示组合的基本结构元素，如序列、循环或并行执行。这项工作的重点是工作流管理环境。我们定义的组合模式是从货车的阿尔斯特等人的工作流模式的全面收集。生成的聚合架构支持与工作流中相同的结构元素。此外，几个QoS维度的聚合进行了讨论。
Contributions in the field of Web services have identified that (a) finding matches between semantic descriptions of advertised and requested services and (b) nonfunctional characteristics - the quality of service (QoS) - are the most crucial criteria for composition of Web services. A mechanism is introduced that determines the QoS of a Web service composition by aggregating the QoS dimensions of the individual services. This allows to verify whether a set of services selected for composition satisfies the QoS requirements for the whole composition. The aggregation performed builds upon abstract composition patterns, which represent basic structural elements of a composition, like sequence, loop, or parallel execution. This work focusses on workflow management environments. We define composition patterns that are derived from Van der Aalst's et al. comprehensive collection of workflow patterns. The resulting aggregation schema supports the same structural elements as found in workflows. Furthermore, the aggregation of several QoS dimensions is discussed.