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11DES_encryption
实现DES算法的加，用matlab实现，代码简洁(DES algorithm to achieve the increase, with Matlab realized, concise code)
- 2007-06-01 09:59:39下载
- 积分：1
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pca
说明： 在MATLAB上所使用的PCA程序，主要應用於過濾相對較不重要的特徵值(dimension)，例如在三度空間的某些點具有(x,y,z)值，因為這些點有共同的一個持徵，就是z值相對於x,y值來得小很多(不明顯)，所以就以X,Y軸來表示這些點。此時就達成去除掉z的特徵值(dimension)。
(MATLAB used in the PCA procedure, mainly used in filtering relatively unimportant eigenvalue (dimension), for example, in some points with three-dimensional (x, y, z) values, because these points have a common one sign holders, that is, z values compared with the x, y values much smaller than (not obvious), so on to X, Y axis to express these points. Reached at this time to get rid of z eigenvalues (dimension).)
- 2008-09-27 14:10:06下载
- 积分：1
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VideoObjectSegmentation
时空联合的视频对象分割，时域采用多帧帧差，形态学处理和高斯聚类，空域采用小波变换和分水岭变换。时域分割的模板与空域分水岭变换的结果融合得到最终的分割结果。(joint space-time video segmentation, multi-domain when displayed poor handling and morphology Gaussian clustering, airspace wavelet transform and watershed transformation. Time-domain segmentation template and airspace watershed transformation is the result of the integration of the final result.)
- 2007-05-17 17:12:26下载
- 积分：1
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pcfbandkz
运用平面波展开法模拟光子晶体光纤中的带隙结构(The use of plane wave expansion method in photonic crystal fiber simulation of the band structures of)
- 2009-09-18 20:39:22下载
- 积分：1
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adaboost
AdaBoost元算法属于boosting系统融合方法中最流行的一种，说白了就是一种串行训练并且最后加权累加的系统融合方法。
具体的流程是：每一个训练样例都赋予相同的权重，并且权重满足归一化，经过第一个分类器分类之后，
计算第一个分类器的权重alpha值，并且更新每一个训练样例的权重，然后再进行第二个分类器的训练，相同的方法.......
直到错误率为0或者达到指定的训练轮数，其中最后预测的标签计算是各系统*alpha的加权和，然后sign（预测值）。
可以看出，训练流程是串行的，并且训练样例的权重是一直在变化的，分错的样本的权重不断加大，正确的样本的权重不断减小。
AdaBoost元算法是boosting中流行的一种，还有其他的系统融合的方法，比如bagging方法以及随机森林。
对于非均衡样本的处理，一般可以通过欠抽样(undersampling)或者过抽样(oversampling)，欠抽样是削减样本的数目，
过抽样是重复的选取某些样本，最好的方法是两种进行结合的方法。
同时可以通过删除离决策边界比较远的样例。
(AdaBoost boosting systems dollar fusion algorithm is the most popular one, it plainly systems integration approach is a serial train and final weighted cumulative.
Specific process is: Each training example is given equal weight, and the weights satisfy normalization, after the first classifiers after
Calculating a first classifier weights alpha value for each sample and updates right weight training, and then the second classifier training, the same way .......
0, or until the specified error rate training rounds, wherein the label is the calculation of the final prediction system* alpha weighted and then sign (predicted value).
As can be seen, the training process is serial, and weight training examples is always changing, the right of the wrong sample weight continued to increase, the right to correct sample weight decreasing.
AdaBoost algorithm is an element, as well as other methods of boosting popular systems integration, such as bagging and random forest method.
For )
- 2014-07-09 19:24:29下载
- 积分：1
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New WinRAR ZIP archive
matlab code euler backward
- 2018-09-08 13:19:37下载
- 积分：1
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Guass
说明： 大地测量学所学知识，高斯正反算的实现，环境是基于MAtlab的(The knowledge of geodesy, considered the positive and negative Gaussian realization of the environment is based on the MAtlab)
- 2011-03-08 16:09:18下载
- 积分：1
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niminggd
说明： C++ 匿名管道程序测试源代码，定义结构体SECURITY_ATTRIBUTES变量，填充结构体中的各成员，创建匿名管道，定义并初始化结构体，填充结构体中的各个成员，从匿名管道中读取的数据等。
(C++ source code program testing anonymous pipe, SECURITY_ATTRIBUTES variables defined structure, fill in the structure members, create an anonymous pipe, define and initialize the structure, filling in the structure of each member to read from the data in anonymous pipe and so on.)
- 2011-04-07 22:20:43下载
- 积分：1
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da_l_l
螺旋锥齿轮数控加工过程关键点计算，包括对刀过程、加工过程等(The spiral bevel gear process key points computing
)
- 2012-03-29 15:31:19下载
- 积分：1
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matlab
《MATLAB仿真在现代通信中的应用》（徐明远）随书光盘(CD with the book " MATLAB simulation applications in modern communications" (Xu Mingyuan))
- 2012-07-23 19:17:22下载
- 积分：1
