題名: A Hybrid Knowledge Representation as a Basis of Requirements Specification and Specification Analysis
作者: Jeffrey J. P. Tsai;T. Weigert;H. Jang 日期: 1992-12
上傳時間: 2009-12-02T01:04:12Z 出版者: Asia University
摘要: A formal requirement specification language, the frame-and-rule oriented requirement specification language FRORL, developed to facilitate the
specification, analysis, and development of a software system is presented. The surface syntax of FRORL is based on the concepts of frames and production rules that may bear hierarchical relationships to each other, relying on multiple
inheritance. To provide thorough semantic foundations, FRORL is based on a nonmonotonic variant of Horn-clause logic. Using the machinery of Horn-clause logic, various properties of a FRORL specification can be analyzed. Among the external properties of FRORL are formality, object-orientedness, and a wide spectrum of life cycle phases. Intrinsic properties are modularity, provision for incremental development, inheritance, refinement, reusability, prototyping, and executability. A software development environment based on FRORL has been implemented using the Clanguage on a Sun workstation.