摘要
作为研究粗集理论的开始，本文首先给出知识的形式化定义和知识库，知识的等价、携主特化等概念的一些基本性质，强调知识与分类概念的联系。当涉及到非为知识时，担保紧粗集概念作为讨论知识的理论基础，因而本文介绍了粗集与集合近似找 近似集合的性质及非精确 数字特征与拓扑特征，最后给出集保的粗等价、粗包含和分类的近似方法。
As ctarting inquiry into rough sots,soe formal definitions and proparties of equivalence generalization and special nation of knowledge are firstly intrduced. Knowledge in our apprcach is strictly connected with the variety of classification patterns related to specific parts of real world.A rough set concept as a theor tieal framework for discussions about knowledge is advocated,particularly when imprecise knowledge is of primary concern fundamentats of approximations and rough tets numerical and topological characterization of imprecision are introduced.Rough quality and inclusion of sets,as well as approximations of classificatioa are discussed in the paper.
出处
《四川轻化工学院学报》
1996年第1期18-28,共11页
Journal of Sichuan Institute of Light Industry and Chemical Technology
基金
国家教委留学回国人员科研基金
