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Desktop
特徵粹取（feature extraction）是特徵選取（feature selection）的延伸，簡單地說，我們希望將資料群由高維度的空間中投影到低維度的空間，因此，我們必須找出一組基底向量（base）來進行線性座標轉換，使得轉換後的座標，能夠符合某一些特性。
我們可以將特徵粹取分成「包含類別資訊」和「不包含類別資訊」兩大類。包含類別資訊指的是我們已經知道哪些資料分別歸屬於哪一類；而不包含類別資訊的特徵粹取則適用於我們不知道手上的資料點分別該歸屬於哪一類，甚至連該劃分成幾類都不知道的情況。對於這兩大類資料，可以分述如下：
對於「不包含類別資訊」的資料，我們通常使用「主要分量分析」（principal component analysis），簡稱 PCA。 (Cuiqu features (feature extraction) is feature selection (feature selection) extension, simply put, we want to base the projection data the high-dimensional space to low-dimensional space, so we have to find a set of basis vectors ( base) to the linear coordinate conversion, so that after the coordinate conversion, can meet a number of features. We can feature Cuiqu into " category contains information" and " does not contain a category of information," two categories. Contains categories of information refers to what we already know what kind of information are attributed to Cuiqu features include categories of information are not applicable to information we do not know the points are in the hands of the home in which category, and even that is divided into several class do not know the situation. For these two categories of information, can be divided as follows: For information " does not include the categories of information" , we usually use the " )
- 2014-12-18 12:19:30下载
- 积分：1
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03_NuMicro-Tools-Installation-and-Practice
03_NuMicro Tools Installation and Practice
- 2014-10-18 17:02:50下载
- 积分：1
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mutipath
通信系统的仿真代码，多径信道的仿真，多径时变的信道仿真。(Communication system simulation code, simulation of multipath channel, time-varying multipath channel simulation.)
- 2010-12-27 10:57:45下载
- 积分：1
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matlab2010aword
这是matlab2010a版的教程。分章阐述符号计算、数值计算、计算结果可视化及编程精要；选例展现MATLAB精华工具SIMULINK的功能级和元器件级仿真能力(This the version tutorial matlab2010a. Sub-chapter on symbolic computation, numerical computation, and result visualization and programming Essentials Selected examples show the functional level and component-level simulation capability for MATLAB Digest tool SIMULINK)
- 2012-03-27 08:43:34下载
- 积分：1
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VISUM-Exercise-for-Monday
Visum Exercise for Monday no use of matlab
- 2011-10-05 06:19:47下载
- 积分：1
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yc
清空环境变量
网络结构建立
遗传算法参数初始化
迭代求解最佳初始阀值和权值
遗传算法结果分析
把最优初始阀值权值赋予网络预测
BP网络训练
BP网络预测
清空环境变量(Empty the environment variable
Established network structure
Genetic algorithm parameter initialization
Iterative Solution optimum initial thresholds and weights
Analysis of Genetic Algorithms
The optimal initial threshold value is assigned to the right network prediction
BP network training
BP network prediction
Empty the environment variable)
- 2013-08-17 21:35:24下载
- 积分：1
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RMSE
说明： 通过matlab编写的几个关于PSNR、mse的图像处理的小程序，希望能对大家有所帮助。(root-mean-square error )
- 2011-04-12 22:38:18下载
- 积分：1
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ganzhiqi
测试智能信息处理课程实验，感知器算法，用matlab实现，(Experimental tests of intelligent information processing course,Perceptron algorithm, matlab
)
- 2013-04-01 08:57:29下载
- 积分：1
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floyd
一个很好用的弗洛伊德算法，对解决有向图的最短距离一招致命。(FLOYD method)
- 2010-09-18 18:55:45下载
- 积分：1
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gaot
遗传算法工具箱，软件自带通用版，亲测可用(Genetic Algorithm Optimization Toolbox)
- 2014-09-05 16:00:41下载
- 积分：1
