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S-粗集的副集η-嵌入粒度
Assistant sets η - embedded granulation of S -rough sets
【摘要】 提出单向副集AS(X°)的η-嵌入集的粒度、双向副集AS(X )的μΔγ-嵌入集的粒度等概念;提出单向副集AS(X°)的η-嵌入集的粒度特性定理,双向副集AS(X )的μΔγ-嵌入集的粒度特性定理.
【Abstract】 This paper presents granulation degree of η- embedded sets of one direction assistant sets A_S(X°) and granulation degree of μ Δ γ -embedded sets of two direction assistant sets A_S(X~*) . Moreover, it also advances granulation degree characteristic theorem of η- embedded sets of one direction assistant sets A_S(X°) and granulation degree characteristic theorem of μ Δ γ- embedded sets of two direction assistant sets A_S(X~*) .
【关键词】 S-粗集;
副集;
粒度;
η-嵌入集;
μΔγ-嵌入集;
【Key words】 S-rough sets; assistant sets; granulation degree; η- embedded sets; μ Δ γ -embedded sets;
【Key words】 S-rough sets; assistant sets; granulation degree; η- embedded sets; μ Δ γ -embedded sets;
【基金】 国家自然科学基金资助项目(70271048);山东省自然科学基金资助项目(Y2001G07)
- 【文献出处】 海南师范学院学报(自然科学版) ,Journal of Hainan Normal University(Natural Science) , 编辑部邮箱 ,2004年01期
- 【分类号】O144
- 【下载频次】23