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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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Skeletonmatlab
用Matlab实现了对一副图像骨架的提取,方法简单,易于掌握。内附实例(Using Matlab to achieve an image of the skeleton extraction method is simple, easy to master. Containing examples)
- 2020-10-24 14:10:01下载
- 积分:1
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planarfitting_Leastsquare
平面拟合程序,可进行多点的平面拟合~简便易懂(Plane fitting procedure, the plane can be fitted more easily understood ~)
- 2010-09-09 11:16:31下载
- 积分:1
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enter_distributions_commands
This functions handles callbacks from the enter_distributions GUI
- 2010-02-09 08:15:12下载
- 积分:1
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COMandMATLAB
基于COM的MATLAB与CNET混合编程的实现与应用(COM-based MATLAB and CNET Implementation and Application of Hybrid Programming)
- 2010-05-19 15:10:54下载
- 积分:1
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hwst-1.0
matlab 实现分水岭算法,可以根据具体的需要来该进(matlab to achieve watershed algorithm may be based on specific needs of the Progressive)
- 2009-12-10 17:37:53下载
- 积分:1
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zoulixiaoying
光波导中光参量放大过程传播到L处的各光波波形图仿数值真matlab代码(Waveguide optical parametric amplification process spread to L is the value of the true light waveform simulation matlab code)
- 2013-09-14 00:06:28下载
- 积分:1
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fenzu
对数据进行分组:通过该程序在matlab将一组数据随机的分为两组,用于建模计算(devide into two groups)
- 2013-10-30 21:59:28下载
- 积分:1
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kanotf
helo hw ru fne kay means
- 2013-12-02 11:26:34下载
- 积分:1
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Electromagnetic
用matlab编写的电磁学方面的函数和图像(Prepared by using matlab function aspects of electromagnetics and images)
- 2008-05-22 16:41:23下载
- 积分:1