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moshifenlei
经典书籍《模式分类》杜达编写，包含了其中所有的算法的MATLAB代码，有助于大家对算法的学习。(Classic books " classification" Duda preparation, which contains all of the algorithm MATLAB code, help you learn the algorithm.)
- 2013-07-12 08:53:26下载
- 积分：1
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gray-image-dilate-and-erode
灰度图像的膨胀与腐蚀函数matlab源代码(gray image dilate and erode )
- 2012-05-10 21:53:22下载
- 积分：1
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ofdmsnr
ofdm snr is designed for signals
- 2013-07-30 21:45:15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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code1
说明： 多目标寻优，本程序主要用于配电网抢修优化(This program is mainly used for distribution network rush repair optimization)
- 2020-12-13 00:29:16下载
- 积分：1
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OccamMT
大地电磁二维Occam反演程序，一维Occam反演，建议用IVF运行。(Occam dimensional magnetotelluric inversion program, a one-dimensional Occam inversion, it is recommended to run with IVF.)
- 2013-12-22 22:08:40下载
- 积分：1
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PCA
使用主成分分析对高维数据进行降维，程序包含了降维的过程和结果(Using PCA to reduct dimensionality for data. the program contains the process and solution.)
- 2013-12-25 21:56:37下载
- 积分：1
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optimization_of_dexterous_hand
优化灵巧手的各节长度,适用于多指灵巧手的手指结构优化设计的多目标优化函数。(to optimize the length of finger)
- 2009-04-15 17:41:06下载
- 积分：1
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gmdh_example
GMDH_main为GMDH主函数；
variable_Combin为输入层初始变量选为x1,x1^2,x1*x2,x2^2,x2时的输入变量矩阵值
variable_select计算X_train训练输入数据,Y_train训练输出数据,X_test测试输入数据,Y_test测试输出数据
Combin为求变量的两两组合
Sym_Combin为求符号变量的两两组合
PE_AIC求每层各神经元的参数估计W，及训练数据在参数估计后估计的输出out_train，测试数据在参数估计后的估计输出out_test，还有与实际比较的误差平方和PESS， 以及准则值AIC
sym_representation求最终的输入输出符号表达式
Criterion_value求准则值
(GMDH_main main function for the GMDH variable_Combin initial variables chosen for the input layer, x1, x1 ^ 2, x1* x2, x2 ^ 2, x2 the value of the input variable matrix calculation X_train variable_select training input data, Y_train training output data, X_test test input data, Y_test for the sake of the test output data Combin pairwise combination of variables for the sake of symbolic variables Sym_Combin pairwise combinations PE_AIC neurons find each parameter estimation of the W, and after the training data is estimated in the estimation of output out_train, test data After the parameter estimates of the output estimated out_test, also compared with the actual sum of squared errors PESS, as well as the final criterion value AIC sym_representation seek the input and output values of symbolic expressions Criterion_value find criteria)
- 2011-04-27 15:32:58下载
- 积分：1
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EXIT
Exit Chart with advance plot in matlab
- 2014-02-16 03:07:21下载
- 积分：1
