一种基于随机Petri网的语义网络服务组合建模方法.doc

文档介绍：
一种基于随机 Petri 网的语义网络服务组合
建模方法#
夏云霓,王威风*
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(重庆大学计算机学院)
摘要:OWL-S 是一种主流的 WEB 服务组合标准,描述了基语义网络本体的端对端服务组
件的组合方式。对基于 OWL-S 的服务组合进行随机 Petri 网建模,能帮助 WEB 服务的使用
和管理者定量的考察服务的可靠性、性能、执行代价等诸多量化特性,并帮助他们从功能相
同的服务组件中择优选取以优化整体服务流程的可靠性。在本文中,我们提出了一种模型驱
动的方法来建模基于 OWL-S 的组合服务。该方法引入一系列的转换规则,将 OWL-S 中的
各种活动和结构转换为等效的随机 PETRI 网描述。为了提现转换规则的有效性,我们在实
例研究中运用规则对一个真实的语义网络组合样例进行了分析。
关键词:软件工程;OWL-S;服务组合;随机 Petri 网
中图分类号:
A stochastic--based approach to quantitative
modeling of semantic web position
XIA Yunni, WANG Weifeng
(School puters, Chongqing University)
Abstract: OWL-S, one of the most significant Semantic web service ontologies , provides Web
Service providers with a core ontological framework and guidelines for describing the properties
and capabilities of their web Services in unambiguous, computer interpretable form. In this work
we present a translation-based approach for modeling the semantic Web services described in the
OWL-S language. This approach employs as the fundamental means of modeling and
defines a set of translation rules to map OWL-S elements into equivalent representations.
They capture the main aspect of service invocations and the control flow of the service model. A
case study based on a real-world OWL-S example is also conducted to examine the effectiveness
of the translation-based model.
Key words: Software engineering;