一种表示和利用需求的计算机辅助形式化的规范模式知识的方法

Xi Wang, Shaoying Liu
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引用次数: 0

摘要

在正式规范中形式化需求通常需要较高的抽象技能和使用编写规范的正式符号的经验。这对许多从业者提出了挑战,他们必须在所需的时间表和预算内处理实际的系统。为了应对这一挑战,提出了一种用于计算机辅助构造形式表达式的模式系统。它在计算机上组织各种相互关联的模式,每个模式都处理一种非正式思想的形式化。但如何将这些知识表示出来,以方便其自动利用和维护,仍然是一个问题。在对模式系统进行形式化定义的基础上,提出了一种表示和利用模式知识的方法。模式系统的应用过程用层次有限状态机(HFSM)来描述,并作为知识来处理。通过执行提议的算法,可以从HFSM中检索必要的信息,以捕获非正式需求并自动生成正式表达式。我们还描述了一个实现该方法的原型工具,并介绍了一个对银行数据管理系统建模的案例研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An approach to representing and utilizing specification pattern knowledge for computer-aided formalization of requirements
Formalizing requirements in formal specifications usually requires high skills for abstraction and experience in using the formal notation in which the specification is written. This poses a challenge to many practitioners who have to deal with realistic systems within the required schedule and budget. To handle this challenge, a pattern system has been proposed for computer-aided construction of formal expressions. It organizes various inter-related patterns on computer, each of which deals with the formalization of a kind of informal ideas. But how to represent such knowledge to facilitate its automatic utilization and maintenance remains a problem. This paper presents an approach to representing and utilizing the pattern knowledge on the basis of a formal definition of the pattern system. The application process of the pattern system is described in HFSM (Hierarchical Finite State Machine) and treated as knowledge. By performing a proposed algorithm, necessary information can be retrieved from the HFSM for capturing informal requirements and automatically generating formal expressions. We also describe a prototype tool that implements the approach and present a case study on modeling a bank data management system.
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