S-粗集的副集α-生成粒度

α-Generation granulation degree of assistant sets of S-rough sets

利用S-粗集理论,给出单向副集As(Xσ)的α-生成粒度,双向副集As(X*)的α-生成粒度等概念;提出单向副集As(Xσ)的α-生成粒度特性定理,双向副集As(X*)的α-生成粒度特性定理;给出副集α-生成粒度的存在背景及在风险投资决策估计中的应用.

Based on S-rough sets theory, the concepts of α-generation granulation degree of one direction assistant sets As( Xσ) and α- generation granulation degree of two direction assistant sets As(X*) are proposed. α-Generation granulation degree characteristic theorem of one direction assistant sets As( Xσ) and a- generation granulation degree characteristic theorem of two direction assistant sets As(X*) are obtained. The existing background and its applications of investment decision estimation of α- generation granulation degree of assistant sets are given.