1) the digital Jordan curve theorem
数字Jordan曲线定理
2) Jordan curve theorem
Jordan曲线定理
1.
To solve the problem, several questions are discussed in this paper as below: (1) A new universal classifying method based hyper surface, HSC, is put forward based on Jordan Curve Theorem, which classify data according to whether the rewind number is odd or even.
为了解决这个问题 ,该文讨论了以下问题 :( 1)提出了一种通用的基于超曲面的直接分类方法 ,它是基于Jordan曲线定理 ,根据围绕数的奇偶进行分类判断的一种新算法 ;( 2 )提出了分类超曲面的概念 ,设计出超曲面的构造方法及基于Jordan定理的分类算法 ;( 3)对双螺旋等问题的分类实验结果说明 :分类超曲面可以有效地解决在有限区域分布很复杂的海量的非线性数据分类问题 ,并能够提高分类效率和准确率 。
2.
Based on Jordan Curve Theorem,a universal classification method based on hyper surface, which is called HSC classification, is put forward in this paper.
本文则基于Jordan曲线定理,提出了一种通用的基于分类超曲面的分类方法,简称HSC分类法,它是通过直接构造分类超曲面,根据样本点关于分类曲面的围绕数的奇偶性进行分类的一种新分类判断算法,与SVM方法相比,不需要考虑使用何种核函数,不需要做升维变换,直接解决非线性分类问题。
3) Jordan curve
Jordan曲线
1.
Secondly,properties of Jordan curve are discussed in spherical surface raster space.
定义了球面栅格空间的拓扑元素,给出球面栅格空间中邻近、连通和空间目标的内部、边界和外部等空间目标的拓扑定义及形式化描述,讨论了Jordan曲线在球面栅格空间中的性质及由此引起的拓扑矛盾。
2.
The following result is proved:if Γ is a Jordan curve of R~2,∞∈Γ,then Γ is a quasicircle if and only if there is a k,1≤k<+∞,such that,given any finite four points onΓ ,there exists a k-quasiconformal mapping h of R~2 onto itself with h(∞)=∞,h(Γ)=Γ and h(z_j)=w_j,for j=1,2.
利用几何知识给出了扩充复平面中的一条Jordan曲线是拟圆周的一个充要条件。
3.
It is proved that the boundaries of Fatou components of four certain kinds of entire functions are Jordan curves,and that the Lebesque measures of the Julia sets of these functions are equal to zero, which generalizes some results obtained by Bergweiler and Kisaka.
论文推广了Bergweiler和Kisaka的一个结论 ,证明了两个结果 :( 1 )上述四类函数中的任何一个函数的Fatou分支的边界都是Jordan曲线 ;( 2 )上述所有函数的Julia集的Lebesgue测度为
4) Jordan closed curve
Jordan闭曲线
5) Jordan theorem
Jordan定理
6) digital curves
数字曲线
1.
A PSO algorithm for polygonal approximation of digital curves restricted by solution of reference;
参照解约束下数字曲线多边形逼近的PSO算法
2.
After tile digitizing process,cartographic curves become broken lines,which are called digital curves.
引入了衡量GIS数字曲线复杂性的四种指标,提出了误差建模中趋势项分离的样条函数法,考察了分离一组具有不同复杂度模拟曲线的有效性,并与差分法进行了比较。
补充资料:Jordan曲线
Jordan曲线
Jordan curve
,1加心翻l曲线【面喊叨口rve;物p脚a印朋阳l 圆周的同胚象(亦见同胚(ho~Inorphism)).以给出此定义的C.Jo代坛n命名.亦见线(曲线)(line(curve)).【补注】亦称为简单闭曲线(simPle closed cun尼). 白苏华、胡师度译
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