Selecting Dynamic Skyline Services for QoS-based Service Composition

Selecting Dynamic Skyline Services for QoS-based Service Composition
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为基于 QoS 的服务组合选择动态 Skyline 服务

DOI:
10.12785/amis/080557
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发表时间:
2014-09
期刊:
Applied Mathematics & Information Sciences
影响因子:
--
通讯作者:
Tingting Liang
Tingting Liang
中科院分区:
其他
文献类型:
--
作者:
Jian Wu;Liang Chen;Tingting Liang

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随着Web服务在Internet上的广泛应用,服务选择成为面向服务计算(SOC)的一个重要问题。合适的服务选择算法是有效地将单功能组件组合成复杂服务的根本保证.所选组件服务的质量对于服务组合的性能至关重要。因此,从一组功能相似的服务中选择最佳服务成为一个热点问题。最近,天际线已被引入到解决这个问题,选择天际线服务作为最佳候选服务。本文主要研究在动态环境下,新业务可能出现,原有业务可能失效,业务的QoS可能发生变化的情况下,Skyline业务的选择问题。我们提出了一个Skyline服务模型以及一个新的Skyline算法来维护动态Skyline服务。一个广泛的性能研究proposesed验证我们的方法的有效性和效率。
With the growing adoption of web services on the Internet, service selection becomes an important issue of service-oriented computing (SOC). Appropriate services selection algorithm is the fundamental guarantee to compose complex services from single- function components effectively. The quality of selected component services is crucial for the performance of the service composition. Therefore, it has become a hot issue to select the best services from a set of services with similar functionality. Recently, skyline has been introduced to solve the problem by selecting skyline services as the best candidate services. In this paper, we focus on selecting skyline services in dynamic environment, where new services may appear, original services may invalidate and QoS of services may change. We propose a skyline service model as well as a novel skyline algorithm to maintain dynamic skyline services. An extensive performance study is propoesed to verify the effectiveness and effi ciency of our approach.
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