| 变精度双向变异S-粗集与它的变异结构 |
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| 引用本文： | 陈巧玲,邱锦明.变精度双向变异S-粗集与它的变异结构[J].三明学院学报,2005,22(4):374-378. |
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| 作者姓名： | 陈巧玲 邱锦明 |
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| 作者单位： | 1. 福建儿童发展职业学院,福建,福州,350025
2. 三明学院,数学与计算机科学系,福建,三明,365004 |
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| 摘 要： | 提出了变精度双向变异S-粗集的概念和它的变异结构，给出了变精度双向变异S-粗集的有关性质定理和推论，并对此进行了讨论。通过实例分析并验证了动态系统由于属性集合的双向动态迁移特性与变精度参数的变化所产生的双向变异S-粗集的上近似、下近似、近似边界区域以及分类近似精度的变化关系和趋势，指出了变精度双向变异S-粗集的研究与应用方向。
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| 关 键 词： | 变异粗集 变精度粗集 变精度双向变异S-粗集 双向包含定理 |
| 文章编号： | 1673-4343（2005）04-0374-05 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005-10-20 |
Two-direction Variation S-Rough Sets of the Variable Precision and Its Variable Structure |
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| CHEN Qiao-ling,QIU Jin-ming.Two-direction Variation S-Rough Sets of the Variable Precision and Its Variable Structure[J].Journal of Sanming University,2005,22(4):374-378. |
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| Authors: | CHEN Qiao-ling QIU Jin-ming |
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| Institution: | 1.Fujian Vocational College of Children Education, Fuzhou 350025, China; 2.Department of Mathematics and Computer Science, Sanming University, Sanming 365004, China |
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| Abstract: | The paper presents a research report on the concept of two-direction variable S-rough sets of the variable precision and its variable structure. It further explores its property theorem and deduction. With the use of the specific example, this paper analyzes and validates the variable relationship and the trend among upper approximation, lower approximation, approximation boundary region and classification approximation precision, which are caused by the variation of two-direction dynamic migratory nature of attribute sets and variable precision parameter p . The discussion in this paper directs the research and application of two-direction variable S-rough sets of the variable precision. |
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| Keywords: | variable rough sets variable precision rough sets variable two-direction S-rough sets two-direction inclusion theorem |
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