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Scalable Automated Service Composition Using a Compact Directory Digest

机译:使用紧凑型目录摘要的可伸缩自动化服务组合

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The composition of services that are indexed in a large-scale service directory often involves many complex queries issued by the service composition algorithm to the directory. These queries may cause considerable processing effort within the directory, thus limiting scalability. In this paper we present a novel approach to increase scalability: The directory offers a compact digest that service composition clients download to solve the hard part of a composition problem locally. In this paper we compare two different digest representations, a sparse matrix and a Zero-Suppressed Reduced Ordered Binary Decision Diagram (ZDD). Our evaluation confirms that both representations are compact and shows that the ZDD enables more efficient service composition.
机译:在大型服务目录中建立索引的服务组合通常涉及服务组合算法向目录发出的许多复杂查询。这些查询可能导致目录内的大量处理工作,从而限制了可伸缩性。在本文中,我们提出了一种提高可伸缩性的新颖方法:目录提供了一个紧凑的摘要,服务组合客户端可以下载该摘要以本地解决组合问题的难点。在本文中,我们比较了两种不同的摘要表示形式:一个稀疏矩阵和一个零抑制的缩减有序二进制决策图(ZDD)。我们的评估证实了这两种表示形式都是紧凑的,并表明ZDD使服务组合更加有效。

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