1) upper approximation set
上近似集
1.
And several rough set operation algorithms are also offered in this paper,such as upper approximation set,lower approximation set,intersection,cardinal number and so on.
通过讨论二进制与粗糙集之间的内在联系,提出基于二进制的粗糙集运算理论,并借助二进制的位运算操作,给出粗糙集的上近似集和下近似集、等价类的交、集合的基数的运算算法。
2) upper approximation
上近似集
1.
This paper simply introduces rough set theory and its applications,and then it has a detailed statement on knowledge,lower and upper approximation sets and other basic concepts about it.
在介绍粗糙集理论及其应用的基础上,着重围绕粗糙集理论中的知识,下、上近似集等基本概念展开了详细的阐述。
3) upper/lower approximate sets
上下近似集
4) similarity upper approximation
相似上近似
5) upper approximation
上近似
1.
Application of upper approximation in reduction of rough set;
上近似在粗糙集约简中的应用
2.
At last, a new definition of the rough degree is defined, and lower approximation has the same inequality and the same sufficient condition as upper approximation with the new definition.
最后,给出一个新的粗糙度定义,并证明在这种定义下,下近似具有与上近似一样的不等式及其充分条件。
3.
In view of the noise polluction in the feature extraction,reasons of dealing with the data of noises by using the feature extraction of upper approximation of rough set.
该文针对特征提取中存在的噪声污染问题 ,分析了采用粗集上近似进行特征提取可以处理含有噪声数据的原因 ;证明了上近似质量随着条件属性的压缩而降低 ,提出了一种基于集合上近似的质量来进行特征提取的算法 ,该算法以集合上近似质量为迭代准则 ,通过设置一阈值来求取θ -约简 ,得到所要提取的特
6) upper convex approximation
上凸近似
1.
A recession function of a positively homogenous function can be presented as an upper convex approximation,which can be used to study the optimality conditions of a class of nonsmooth optimization—directionally differentiable optimization.
对于一般的非凸函数,其方向导数不具备任何凸性,可以利用一般正齐次函数的回收函数来给出它的一个上凸近似。
补充资料:〖ZK(〗各证集说诸方备用并五脏六腑集论合抄〖ZK)〗
〖ZK(〗各证集说诸方备用并五脏六腑集论合抄〖ZK)〗
内科著作。1卷。原题清叶桂(天士)家传,撰年不详。此书汇集内科杂证70余种,方剂近200首。每证各为一论,阐明疾病性质、病因、症状、治则及方药。论后每引经说,概括病机。所列方药服法亦皆详备。又列“五脏六腑论”一章,引用《内经》、《难经》,逐一论述五脏六腑之形象、部位、表里关系、病症及治法。本书内容多录自《临证指南》,恐系后人伪托叶氏之作。现存抄本
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