一个知识相对于另一个知识的关系在实际应用中十分重要,而覆盖是一种重要的知识。本文讨论知识的相对约简,保持一个覆盖相对于一族覆盖的正域不变的条件下,提出覆盖相对约简的概念,给出覆盖相对协调集和覆盖相对核心的判定定理,推广了不协调覆盖决策系统相对约简理论,该理论对于知识的相对约简有重要意义。
The relative relation between one knowledge This paper proposes the relative reduction of knowledges reduction, which preserves the positive region of a covering to establish the judgement theorem for covering consistent relative reduction in inconsistent covering decision systems and another is important in application. in coverings and defines covering relative A discernibility matrix is also constructed set and covering core. Then, the theory of is generalized.