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EX0905
调制信号的波形及其功率谱。。。很好用。。(The modulated signal waveform and the power spectrum)
- 2009-10-31 23:56:40下载
- 积分:1
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copula_toolbox
copula函数 主要应用于BB7UgivenV_inverse2(copula function BB7UgivenV_inverse2)
- 2011-05-02 13:22:32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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PSO_pathplanning
说明: 以PSO与三次样条插值结合的移动机器人路径规划算法,主函数为pso.m(Mobile robot path planning algorithm combining PSO and cubic spline interpolation, the main function is pso.m)
- 2020-11-17 18:29:40下载
- 积分:1
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Sciencedirect_articles_28Sep2014_02-11-03.119
BIOMEDICAL SCIENCE DIRECT PAPERS
- 2014-10-29 15:40:04下载
- 积分:1
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piu_v73
多机电力系统仿真及其潮流计算,包括邓氏关联度、绝对关联度、斜率关联度、改进绝对关联度,包含光伏电池模块、MPPT模块、BOOST模块、逆变模块。( Multi-machine power system simulation and flow calculation, Including Deng s correlation, absolute correlation, correlation of slope, improved absolute correlation, PV modules contain, MPPT module, BOOST module, inverter module.)
- 2020-11-07 22:09:48下载
- 积分:1
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arnold
arnold加密算法的matlab实现,arnold加密算法的matlab实现(arnold encryption algorithm matlab implementation)
- 2012-05-22 20:37:17下载
- 积分:1
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VBLAST
In this simulation, a 2 x 2 MIMO system with BPSK modulation is used. Then, the algorithm of V(BLAST is implemented. After that, weight vector is produced using ZF, MMSE and ML detectors. Finally, the BER performance is plotted. A flat fading Rayleigh channel is assumed in this simulation.)
- 2014-09-22 13:11:42下载
- 积分:1
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timing
在SIMLINK中用gandner 算法实现定时环路中的时间检测(Gandner algorithm used in SIMLINK timed loop in the time of detection)
- 2010-06-03 16:54:16下载
- 积分:1
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MATLAB_For_C
完整的C与matlab混合编程的例子,包含很多实例,还有讲解用的ppt,对于想要了解c与matlab混合编程的人很有帮助。(Complete mixed C and matlab programming examples, including many examples, as well as on the use of ppt, to want to know c and mixed programming matlab people very helpful.)
- 2007-12-22 23:52:39下载
- 积分:1