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1.
利用单向S-粗集,给出单向S-粗决策规律生成方法;给出上决策规律,下决策规律,单向S-粗决策规律核,单向S-粗决策规律带,单向S-粗决策规律壳的概念;利用这些概念,提出下决策规律传递定理,上决策规律传递定理,F-分离的属性定理,粗决策规律挖掘定理,与粗决策规律挖掘准则。  相似文献   

2.
一种基于函数S-粗集的态势预测方法   总被引:1,自引:0,他引:1  
针对态势评估中未来可能出现态势的优劣情况,提出了一种基于函数S-粗集的态势预测方法。利用函数S-粗集的粗规律挖掘功能,采用拉格朗日插值多项式,以函数单向S-粗集对偶为例,给出了应用该方法的具体步骤。最后通过态势评估中一个具体实例证明了该方法的有效性。得到了运用函数S-粗集能够找到隐藏在系统中的粗规律的结论。  相似文献   

3.
F-规律推理与规律挖掘   总被引:4,自引:0,他引:4  
对S-粗集给出改进,把函数这个分析工具引入到S-粗集中,提出函数S-粗集(function singularrough sets)。函数单向S-粗集(function one direction singular rough sets)是函数S-粗集的基本形式之一,它是以R-函数等价类[u]定义的;ui∈[u]是一个函数,函数是一个规律。函数单向S-粗集具有单向动态特性与规律特征:利用函数单向S-粗集的规律特征,给出F-规律推理与F-规律推理的规律挖掘概念,提出F-规律推理的规律挖掘定理,F-规律推理的规律挖掘原理与F-规律推理的规律挖掘应用。F-规律推理的规律挖掘是寻找系统中未知规律研究的一个新的研究方向。  相似文献   

4.
函数S-粗集是以函数等价类定义的,它具有规律特性,图像具有特征,特征存在着规律,将函数S-粗集的规律特性嫁接,应用到识别理论中。给出图像特征F-下近似规律,F-上近似规律的生成,及规律模型,给出图像特征规律F-识别对结构,并对图像F-识别给出特性分析。图像F-识别是一种新的识别方法,已经成为识别理论研究中的一个新的研究方向。  相似文献   

5.
函数单向S-粗集对偶(dual of function one direction singular rough set),具有单向动态特性和规律特性;它是函数S-粗集(function singular rough set)的基本形式之一。函数S-粗集是在改进S-粗集的基础上提出的。利用函数单向S-粗集对偶的动态特性和规律特性,给出f·-规律,f·-规律的属性特征,属性距离,f·-冗余规律概念。利用这些概念,提出规律与它的f·-属性控制,并给出f·-属性控制定理,f·-属性控制判定定理,f·-属性控制识别准则与应用。  相似文献   

6.
一个系统(控制系统、通讯系统)没有受到某个规律的干扰(或攻击),则系统处于稳定运动状态或者按预定的规律运动。未知规律进入到系统中,对系统进行干扰,使得系统的运动规律紊乱。利用函数单向S-粗集对偶(dual of function one direction singular rough sets),给出系统中■-生成规律的概念,给出■-生成规律的生成模型和对系统规律的识别。函数单向S-粗集对偶是识别系统中存在干扰规律,识别系统规律的一个新的理论与方法。  相似文献   

7.
一个系统(控制系统、通讯系统)没有受到某个规律的干扰(或攻击),则系统处于稳定运动状态或者按预定的规律运动.未知规律进入到系统中,对系统进行干扰,使得系统的运动规律紊乱.利用函数单向S-粗集对偶(dual of function one direction singular rough sets),给出系统中(-F)-生成规律的概念,给出(-F)-生成规律的生成模型和对系统规律的识别.函数单向S-粗集对偶是识别系统中存在干扰规律,识别系统规律的一个新的理论与方法.  相似文献   

8.
一个系统(控制系统、通讯系统)没有受到某个规律的干扰(或攻击),则系统处于稳定运动状态或者按预定的规律运动.未知规律进入到系统中,对系统进行干扰,使得系统的运动规律紊乱.利用函数单向S-粗集对偶(dual of function one direction singular rough sets),给出系统中(-F)-生成规律的概念,给出(-F)-生成规律的生成模型和对系统规律的识别.函数单向S-粗集对偶是识别系统中存在干扰规律,识别系统规律的一个新的理论与方法.  相似文献   

9.
S-粗集具有三类形式:单向S-粗集,双向S-粗集,单向S-粗集对偶。S-粗集具有动态特性,遗传特性,记忆特性。利用单向S-粗集对偶与它的隐藏特性,本文给出f-隐藏知识,F-隐藏知识,隐藏度,隐藏依赖的概念,提出隐藏知识的隐藏定理,隐藏知识的隐藏依赖定理,给出F-隐藏与F-隐藏依赖在系统状态识别中的应用。  相似文献   

10.
介绍了S-粗集的概念, 结合其动态迁移特性给出了可以适应复杂背景和含噪环境的图像S-粗集表示模型, 使静态目标可以将"不好"特性像素点迁移出去. 利用粗糙熵平衡目标和背景粗糙度对边界的影响, 提出一种更具适应性的 图像阈值分割算法. 为了适应离散点的迁移, 同时避免粒度大小的选择, 结合包含度概念给出了图像变精度S-粗集表示模型, 利用精度参数来 控制调节获取最佳分割阈值, 实现目标提取. 仿真实验表明, 所提出算法具有更好的图像分割效果.  相似文献   

11.
Function S-Rough sets and its applications   总被引:19,自引:0,他引:19  
1 .INTRODUCTIONBased on S-rough sets(singular rough sets)[3 ~14],Refs .[1 ,2] presented function S-rough sets (func-tion singular rough sets) and its two forms :func-tion one direction S-rough sets (function one direc-tion singular rough sets) and function two direc-tion S-rough sets (function two direction singularrough sets) . Function S-rough sets is obtained toresearch mining discovery . Let’s see a practicalsystem: The output state of a system can be de-scribed by the function set…  相似文献   

12.
Function S-rough sets and mining-discovery of rough law in systems   总被引:10,自引:0,他引:10  
1. INTRODUCTION S-rough sets (singular rough sets) was presented in Ref. [3] in 2002, and defined on α -element equival- ence class [x] with dynamic characteristic. S-rough sets has more advantages than Z.Pawlak’s rough sets[24]. S-rough sets has been applied in dynamic object recognition[21], mechanical engineering[22] and information science[8-13]. In 2005, function S-rough sets was put forward in Refs. [1,2], and is defined on α -function equivalence class [u] with dynamic charact…  相似文献   

13.
By using function S-rough sets (function singular rough sets), this paper gives rough law generation and the theorem of rough law generation. Based on these results above, the paper proposes rough law separation, the theorem of rough law separation, the compound generation theorem of rough law bands, and the principle of rough law bands. In the end, an application of rough law separation in recognizing the risk law of profit is presented.  相似文献   

14.
By using function one direction S-rough sets (function one direction singular rough sets), this article presents the concepts of F-law, F-rough law, and the relation metric of rough law; by using these concepts, this article puts forward the theorem of F-law relation metric, two orders theorem of F-rough law relation metric, the attribute theorem of F-rough law band, the extremum theorem of F-rough law relation metric, the discovery principle of F-rough law and the application of F-rough law.  相似文献   

15.
Function one direction S-rough sets have dynamic characteristics and law characteristics. By using the function one direction S-rough sets, this article presents the concepts of the f-hiding law, F-hiding law, f-hiding law dependence and F-hiding law dependence. Based on the concepts above, this article proposes the hiding-dependence theorem of f-hiding laws, the hiding-dependence theorem of F-hiding laws, the hiding-dependence separation theorem, the hiding dependencs-discovery principle of unknown laws. Finally, the application of the hiding dependence of hiding laws in the discovery of system laws is given.  相似文献   

16.
By employing function one-direction S-rough sets and rough law generation method based on function S-rough sets, ¯ f-decomposition law and ¯ F-decomposition rough law are proposed, and the measurement of rough law variation in the process of rough law ¯ F-decomposition is researched. The concepts of law energy and attribute ¯ f-interference degree are presented, which make the variation of rough law become measurable. ¯ f-decomposition law energy characteristic theorem, ¯ fdecomposition law energy inequality theorem, ¯ F-decomposition rough law energy characteristic theorem, and ¯ f-decomposition law energy mean value theorem are presented.  相似文献   

17.
F-Law collision and system state recognition   总被引:7,自引:0,他引:7       下载免费PDF全文
Using function one direction S-rough sets (function one direction singular rough sets), f-law and F-law and the concept of law distance and the concept of system law collided by F-law are given. Using these concepts, state characteristic presented by system law collided by F-law and recognition of these states characteristic and recognition criterion and applications are given. Function one direction S-rough sets is one of basic forms of function S-rough sets (function singular rough sets). Function one direction S-rough sets is importance theory and is a method in studying system law collision.  相似文献   

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