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RS_simulation_code
RS编译码的matlab码源,经测试好用。(RS codec matlab source code)
- 2010-12-11 21:57:56下载
- 积分:1
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anli21.5-3
北京航空航天大学出版的matlab从零进阶的原程序代码第1章案例21.3源代码(Beijing University of Aeronautics and Astronautics from zero Advanced matlab published the original program code in Chapter 1 Case 21.3 source code)
- 2014-01-17 21:47:23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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basicmpc
一个简单的预测控制例子,基本预测控制算法(Predictive control of a simple example, the basic predictive control algorithm)
- 2008-06-01 21:57:40下载
- 积分:1
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TabuSearch
This code is a solution for TSP problem with tabu search.
- 2010-12-13 22:04:14下载
- 积分:1
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Matlabsyjc
说明: 学习MATLAB的实用教程,word版文档,包含许多MATLAB程序实例(learning MATLAB)
- 2010-04-16 15:43:07下载
- 积分:1
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MATLAB-Curve-Fitting
说明: 给予神经网络RB发的MATLAB曲线拟合(Issued to give MATLAB neural network curve fitting RB)
- 2011-04-12 11:24:43下载
- 积分:1
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fers-beta1
Flexible Extensible Radar Simulation
- 2009-05-12 17:51:57下载
- 积分:1
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mallat
Mallat 卷积实现,破解matlab自带程序,其结果一样.希望对大家有帮助.(Mallat convolution implementation, crack matlab own procedures, the same result. Want to help everyone.)
- 2009-12-24 20:21:54下载
- 积分:1
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经典的数据挖掘程序
这个一些经典的数据挖掘matlab源程序,比较全。(some of the classic source Matlab data mining, comparative whole.)
- 2005-05-13 16:19:40下载
- 积分:1