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burg
在MATLAB上实现burg算法，简便易懂(Burg on implementation in MATLAB algorithm, simple and understandable)
- 2009-03-05 16:06:18下载
- 积分：1
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KummerComplex
计算合流超线几何函数(confluent hypergeometric function)的matlab函数. 直接将对应值代入即可使用.经过mathematic计算后的值对比,完全一致. (Ultra-line calculation of the geometric function confluence (confluent hypergeometric function) function of matlab. Directly into the corresponding value to use. After mathematic calculation of the value of contrast, is fully consistent.)
- 2008-07-24 00:21:12下载
- 积分：1
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logistic_dwt
说明： 】利用混沌动力学系统中logistic 映射先对水印图像进行置乱预处理以增强其鲁棒性, 在小波域中将原始音频信号按比例分段, 此比例为原始音频信号低频部分与水印信号个数之比, 然后将水印信号加入到音频信号的
低频部分。用StirMark 攻击后的实验结果表明, 该算法对StirMark 的部分攻击具有一定的鲁棒性。(The logistic- map sequences to encrypt the watermark are used. The original audio signal in DWT
(Discrete Wavelet Transform) domain is seperated into some pieces determined by the ratio between the length of
the low frequency parts and the length of the encrypted watermark. Every bit of the watermark is added into the
relevant pieces of the low frequency parts in the DWT domain. Experimental results show that the algorithm is
robust against some StirMark attacks.)
- 2009-08-07 08:49:10下载
- 积分：1
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k_mean
k-mean data clustering
- 2015-02-18 05:11:28下载
- 积分：1
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wavelet
matlab小波分析的程序，实现与傅里叶变换的对比(matlab wavelet analysis procedures to achieve contrast with the Fourier transform)
- 2014-02-21 22:43:51下载
- 积分：1
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mdemo
研究空间分配，测试程序，为保障有效运行，请注意安装环境软件的版本正确与否(study for space resonability)
- 2010-10-01 01:39:39下载
- 积分：1
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newton_lagrange
在matlab r2010a环境下编写的newton-lagrange算法，可以求解约束优化问题，程序返回目标函数值及拉格朗日乘子。(In matlab r2010a environment prepared newton-lagrange algorithms can solve constrained optimization problems, the program returns the value of the objective function and Lagrange multipliers.)
- 2013-07-18 01:44:15下载
- 积分：1
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MATLAB-FEM
本书主要介绍了有限元方法的MATLAB程序实现，是国外经典的计算机学科教材。(This book introduces the finite element method of the MATLAB program, a foreign classic computer science textbook.)
- 2013-11-04 18:12:46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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fig4
Program of publication
"Fast Channel Shortening with Polynomial Weighting Functions"
- 2010-12-08 02:58:27下载
- 积分：1
