1)discernibility matrix可辨识矩阵
1.Fast attribute reduction algorithm of rough set based on discernibility matrix;基于可辨识矩阵的快速粗糙集属性约简算法
2.An algorithm of attribute frequency reduction based on discernibility matrix;基于可辨识矩阵的属性频率约简算法
3.A discernibility matrix based attribute reduction algorithm for in consistent decision tables;不相容决策表属性约简计算的一个可辨识矩阵方法
英文短句/例句
1.Improvement of Discernibility Matrix and Method forComputing Attribute Core改进的Skowron可辨识矩阵及其属性核求解方法
2.Attribute Frequency Reduction Arithmetic Based on Discernibile Matrix of Rough Set基于粗集可辨识矩阵的属性频率约简算法
3.Discretization of Continuous Properties Based on Discernibility Matrix in Data Mining;数据挖掘中基于可辨识矩阵的连续属性离散化方法
4.Knowledge Reduction Algorithm Based Binary Discernibility Matrix(to be Continued)基于二进制可辨矩阵的知识约简(待续)
5.Knowledge reduction algorithm based binary discernibility matrix;基于二进制可辨矩阵的知识约简(续前)
6.Attribute Reduction Algorithm Based on Discernible Boolean Matrix and Classification Coefficient;基于可辨识布尔矩阵和分类系数的属性约简算法
7.Research of Attribute Reduction Based on Binary Discernable Matrix;基于二进制可辨矩阵的属性约简研究
8.Algorithm to compute core based on new binary discernibility matrix基于新的二进制可分辨矩阵求核算法
9.Based on incidence matrix, a new method was developed for network topology identification.提出一种基于关联矩阵的网络拓扑辨识方法。
10.Application of the Matrix-Connection Method in Identification and PID Parameter;矩阵连接法在辨识与PID参数设计中的应用
11.In-Orbit Identification of the Inertial Matrix of Zero Momentum Satellite基于GTLS的零动量卫星惯量矩阵在轨辨识
12.Incremental updating algorithm for neighborhood-based attribute reduction based on discernibility matrix基于邻域辨识矩阵的属性约简增量式算法
13.Irregular-Closed Graphic Recognition Based on Contour Measurement Matrix基于等高测度矩阵辨识不规则封闭图形
14.Feature selection combining new document frequency with binary discernibility matrix结合新型文档频和二进制可辨矩阵的特征选择
15.As for the size of the rectangular array , under the same condi- tions, the resolution power of a 128X 128 array is better than that of a 64 X 64 array.讨论; 就矩阵大小而言,128×128矩阵采集分辨能力优于64×64矩阵。
16.Firstly, it deals with the data of information system and create the binary discernible matrix.首先对信息系统的数据加工泛化,构造其二进制可辨矩阵。
17.Study of Attribute Reduction Algorithms Based on Binary Discernibility Matrix and of Rule Extraction;基于二进制可辨矩阵的属性约简算法与规则获取的研究
18.An Incremental Updating Approach to Compute a Core Based on Improved Binary Discernable Matrix基于改进的二进制可辨矩阵的核增量式更新方法
相关短句/例句
distinct matrix可辨识矩阵
3)Recognizable Matrix可辨识矩阵
4)improved discernibility matrix改进可辨识矩阵
1.The improved discernibility matrix is put forward,the attribute importance is redefined and the Fuzzy Cluster is applied for the classification of attribute importance,then based on which a heuristic algorithm for reduction of knowledge and abstracting decision rules is proposed.首先提出了改进可辨识矩阵,然后对属性重要性进行了重新定义,并且将模糊聚类应用于属性重要性划分,从而在此基础上提出了一种启发式知识约简及决策规则提取算法。
5)discernibility attribute matrix可辨识属性矩阵
1.In random information systems,based on the indiscernibility relation,the concept of indiscernibility attribute matrix is proposed and the relationship between discernibility attribute matrix and indiscernibility attribute matrix is shown.在随机信息系统中,根据不可辨识关系,提出了不可辨识属性矩阵的概念,证明了不可辨识属性矩阵与可辨识属性矩阵的关系,最后提出了一种基于不可辨识属性矩阵约简算法。
6)discernible Boolean matrix可辨识布尔矩阵
1.Two definitions called discernible Boolean matrix of consistent decision table and elementary row transformation of Boolean matrix are given.提出协调决策表的可辨识布尔矩阵和布尔矩阵的初等行变换的概念,建立属性约简的数学模型。
2.For the sake of increasing visual expression of some concepts and operations in the rough sets theory,two definitions,whichis called respectively discernible Boolean matrix and classification coefficient,are given.为了增强粗糙集理论中某些概念与运算的直观性,分别给出了可辨识布尔矩阵和分类系数的定义。
3.The discernible Boolean matrix of concept lattice were defined.本文给出了概念格的可辨识布尔矩阵的概念,把概念格的属性分成绝对必要属性、相对必要属性和绝对不必要属性三类,建立了概念格的属性约简模型。
延伸阅读
闭环系统辨识 在闭环条件下确定开环系统(或正向通道)的动态特性。一般的系统辨识方法都是针对开环控制系统的,对于闭环控制系统的辨识,主要是指根据闭环操作所得到的数据,在什么条件下可以辨识和如何辨识系统的正向通道参数的问题。稳定的闭环系统对于不同反馈作用的输入信号可能有几乎相同的输出信号,因此闭环系统的输入和输出数据所提供的信息比开环的少。这给辨识带来一定困难。另外,在开环系统中,输入和输出所受到的干扰是互相独立的;而在闭环系统中,由于反馈的作用,输入总是与输出噪声相关的,这就给辨识带来更大的困难,有时甚至不能辨识。对于闭环系统,在很多情况下不允许把反馈断开后再对正向通道进行辨识。因为切断反馈,系统便成为开环而不稳定,甚至出现危险(例如一些化工系统就是这样)。有时为了高产、优质和保密等原因也必须保留反馈。还有很多系统,反馈是系统本身所固有的,根本不能消除,例如社会、经济和生物等系统。 图1是一个闭环控制系统,其中w是设定值干扰,u和y分别是系统的输入和输出,它们都是可以测量的,ε1和ε2分别是正向通道和反馈回路的噪声,GS和GR分别是系统开环的和反馈回路的传递函数,G1和G2分别是正向通道和反馈回路噪声的传递函数。闭环系统辨识就是用 w、u和y的测量值来确定系统开环的传递函数GS。用一般的系统辨识方法,通过w和y的测量值可以对整个闭环系统进行辨识而得到闭环系统的传递函数,通过u和y的测量值得到的开环传递函数GS误差比较大,因为这时输入u和噪声ε1不是统计独立的,而独立性是无偏估计(见参数估计)的充分条件。当w=0和ε2 =0时,图1变为图2,对于这样的闭环系统,用u和y的测量值不能得到真实的开环系统传递函数GS,而只能得到GS的一个估计:。 闭环系统辨识的关键是保证输入u与噪声的统计独立性和保证GS的唯一性。70年代中期以来闭环系统辨识取得一些重要的结果:①在有反馈噪声的情况下,如果ε1和ε2统计独立,则用u和y的测量值可以辨识出GS与GR;如果ε1和ε2不是统计独立的,则GS和GR 没有唯一解。②在没有反馈噪声的情况下,如果GR已知,w≠0,而且w与ε1统计独立,则由u和y的测量值可以得到 GS的正确解;如果w =0(图2),则在一定条件下,闭环系统也是可辨识的。 参考书目 哥德温、潘恩著,张永光、袁震东译:《动态系统辨识:试验设计与数据分析》,科学出版社,北京,1983。(G. C. Goodwin and R. L. Payne, Dynamic System Identification: Experiment Design and Data Analysis, Academic Press, 1977.)