A framework for QoS-aware binding and re-binding of composite web services
A framework for QoS-aware binding and re-binding of composite web services
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DOI：
10.1016/j.jss.2007.12.792
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
G. Canfora;M. D. Penta;Raffaele Esposito;M. Villani
中科院分区：
文献类型：
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作者：
G. Canfora;M. D. Penta;Raffaele Esposito;M. Villani
组合服务的QoS感知动态绑定提供了将组合中的每个服务调用绑定到从一组功能等效的服务中选择的服务的能力，以实现QoS目标，例如最小化响应时间，同时将价格限制在最大值以下。提出了一种基于遗传算法的QoS绑定方法。该方法包括一个早期运行时重新绑定的功能，只要实际的QoS偏离初始估计，或当服务不可用时。该方法已在一个框架中实施，并通过两种不同的服务组合进行经验评估。
QoS-aware dynamic binding of composite services provides the capability of binding each service invocation in a composition to a service chosen among a set of functionally equivalent ones to achieve a QoS goal, for example minimizing the response time while limiting the price under a maximum value. This paper proposes a QoS-aware binding approach based on Genetic Algorithms. The approach includes a feature for early run-time re-binding whenever the actual QoS deviates from initial estimates, or when a service is not available. The approach has been implemented in a framework and empirically assessed through two different service compositions.