| 覆盖粗糙集模型转化的方法研究 |
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| 引用本文： | 李灿泽,吴根秀,晏伟峰,周丽. 覆盖粗糙集模型转化的方法研究[J]. 江西师范大学学报(自然科学版), 2011, 35(4): 391-395,426 |
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| 作者姓名： | 李灿泽 吴根秀 晏伟峰 周丽 |
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| 作者单位： | 江西师范大学数学与信息科学学院,江西南昌,330022 |
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| 基金项目： | 国家自然科学基金(60963014); 江西省自然科学基金(2007GZS0186)资助项目 |
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| 摘 要： | 通过研究邻域覆盖、覆盖导出的划分之间的内在关系,给出了一种新的转化方法.新方法证明了由一个覆盖可唯一导出一个划分、由覆盖与其覆盖约简导出的划分一致等结论,而且得出了由覆盖导出的等价关系的上、下近似算子更加细分等优良性质;提高了集合的近似程度,能更好地用于属性约简、核的求取和规则的生成等方面研究.
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| 关 键 词： | 覆盖粗糙集 Pawlak粗糙集 覆盖度 邻域覆盖 覆盖约简 |
The Research on Covering Rough Set Model Transformation |
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| LI Can-ze,WU Gen-xiu,YAN Wei-feng,ZHOU Li. The Research on Covering Rough Set Model Transformation[J]. Journal of Jiangxi Normal University (Natural Sciences Edition), 2011, 35(4): 391-395,426 |
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| Authors: | LI Can-ze WU Gen-xiu YAN Wei-feng ZHOU Li |
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| Affiliation: | LI Can-ze,WU Gen-xiu,YAN Wei-feng,ZHOU Li(College of Mathematics and Informatics,Jiangxi Normal University,Nanchang Jiangxi 330022,China) |
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| Abstract: | A new transformation was proposed by studying the inner relations between neighborhood covering and partition.It is proved that a covering could only derived a partition,a covering and its reduction derived the same partition,these deficiencies were solved.Covering approximation operators of the derived equivalence relations were less coarser,the approximation degree of a set could be improved,better for the attribute reduction,core re-quest,rules formation and other researches. |
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| Keywords: | covering rough set Pawlak rough set covering degree neighborhood covering covering reduction |
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