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The goal of this paper is to take a further step towards an ontological approach for representing requirements information. The motivation for ontologies was discussed. The definitions of ontology and requirements ontology were given. Then, it presented a collection of informal terms, including four subject areas. It also discussed the formalization process of ontology. The underlying meta-ontology was determined, and the formalized requirements ontology was analyzed. This formal ontology is built to serve as a basis for requirements model. Finally, the implementation of software system was given. 相似文献
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一种基于场景的CTCS-3列车控制系统建模方法研究 总被引:1,自引:0,他引:1
对CTCS-3列车控制系统进行有效的测试、分析和验证是保证列车运行安全和旅客生命财产安全的重要手段,而形式化模型是系统测试、分析和验证的基础。本文以CTCS-3列车运行控制系统的UML非形式化模型为基础,以自动机模型作为系统形式化模型描述的数学工具,研究UML顺序图(场景)自动转化为自动机网模型的方法。首先将场景的UML顺序图自动转化为子系统的子自动机模型,然后通过合并不同场景的子自动机模型,得到子系统的组元自动机模型,最后通过对通信通道的建模得到系统的自动机网模型。使用本方法,基于系统的UML顺序图模型可以自动生成系统的自动机网模型。 相似文献
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