机构地区: 华中科技大学计算机科学与技术学院
出 处: 《中山大学学报(自然科学版)》 2009年第3期28-32,共5页
摘 要: 讨论了基于正区域与近似分类质量代数约简定义的等价性,证明了基于决策强度的属性约简与信息熵约简是等价的,从条件概率的角度将代数约简与信息熵约简的数学模型在形式上给出了统一表示,分析了它们在一致决策表下是一致的以及在不一致决策表下是不一致的根本原因。 The equivalence between algebraic reduction definitions based on approximate classification quality and positive region is discussed. It is proved that the attribute reduction concept of decision power is just the one based on conditional information entropy. From the view of conditional probability, the mathematic models of algebraic reduction and information entropy reduction are united formally. The consistence and inconsistence between them are analyzed.
领 域: [自动化与计算机技术] [自动化与计算机技术]