摘要
利用函数双向S-粗集的结构,给出函数迁移的信度特征,函数集Q的下近似信度特征,函数集Q的上近似信度特征;利用这些结果,给出函数双向S-粗集的信度特征,提出函数双向S-粗集的随机结构与随机定理。函数双向S-粗集的结构是函数双向S-粗集的随机结构的特例,函数双向S-粗集的随机结构是函数双向S-粗集结构的一般形式。
By employing the structure of function two direction S-rough sets,this paper presents the concepts as follows： probability characteristic of function transfer;probability characteristic of the lower approximation of function set Q;probability characteristic of the upper approximation of function set Q.By using these concepts,the probability characteristic of function two direction S-rough sets is given,and the stochastic structure and stochastic theorem of function two direction S-rough sets are proposed.The structure of function two direction S-rough sets is a special case of the stochastic structure of function two direction S-rough sets,and the stochastic structure of function two direction S-rough sets is the general form of the structure of function two direction S-rough sets.
出处
《计算机工程与应用》
CSCD
北大核心
2009年第1期66-68,共3页
Computer Engineering and Applications
基金
福建省教育厅A类科技项目
福建省教育厅B类科技项目~~
关键词
函数双向S-粗集
函数迁移
信度函数
随机结构
function two direction S-rough sets
function transfer
probability function
stochastic structure
