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对下近似不易测粗糙集近似程度的刻画

Description of Approximation Degree about Rough Set that Its Lower Approximation Is Not Easy to Solve
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摘要 边界与近似精度是刻画粗糙集近似程度的重要方法.就下近似不易测的粗糙集,对以上方法给出刻画并证明,特别的给出一种强近似精度刻画,在一定情况下效果是比较明显的. Boundary and approximation precision are important methods to describe approximation degree of rough set.About rough set that its Lower approximation is not easy to solve,the article gives description and proves it.Especially,we give a kind of strong approximation precision.In an certain circumstance,its effect is relatively clear.
作者 王银军
机构地区 漳州师范学院数学与信息科学系
出处 《吉林师范大学学报（自然科学版）》 2011年第2期30-32,共3页 Journal of Jilin Normal University:Natural Science Edition
关键词 粗糙集 上(下)近似 等效刻画 强近似精度 rough set Upper（Lower） approximation equivalence description strong approximation precision
分类号 TP18 [自动化与计算机技术—控制理论与控制工程]
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共引文献34

吉林师范大学学报（自然科学版）
2011年 第2期

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