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Photovoltaic-off-grid
简单的光伏离并网问题，simulink仿真，采用pid控制。(Simple photovoltaic off grid problems, Simulink simulation, using PID control.)
- 2015-03-30 10:39:12下载
- 积分：1
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lowp
本程序是切比雪夫低通滤波器，用于电力系统离散数据基波提取(This program is a Chebyshev low-pass filter for extracting the fundamental power system discrete data)
- 2014-02-13 23:29:47下载
- 积分：1
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AM
说明： simulink file to ampletude modulation and demodulation
- 2011-07-14 07:53:19下载
- 积分：1
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Untitled2
实现参数辨识，可以自己更改当中的某些参数，实现不同对象的参数辨识(To achieve parameter identification, which can change some of their parameters, to achieve parameter identification of different objects)
- 2011-10-28 17:03:33下载
- 积分：1
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Pencil
pencil numerical method
- 2012-03-22 18:40:25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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krig1d
krig插值的matlab源码，适用于地学类(krig interpolation matlab source)
- 2010-08-19 17:18:39下载
- 积分：1
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OFDM_Synchronization
一个OFDM同步的程序，包括发送，接收程序(An OFDM synchronization process, including sending, receiving procedures)
- 2010-09-03 21:56:04下载
- 积分：1
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Time_Delay_system_simulation
带有滞后环节的系统仿真，在matlab环境下对有滞后的系统进行仿真，模拟并分析(With lags system simulation in Matlab environment lag system simulation, simulation and analysis)
- 2021-02-27 14:39:36下载
- 积分：1
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Wavelet_Estimation
计算时间序列的Hurst系数有许多方法，但是其中最准确的就是利用小波法来计算，本程序用Matlab实现了用小波来计算Hurst系数。(Calculation of the Hurst coefficient of time series has a number of ways, but one of the most accurate method is to use wavelet basis, the procedures used to achieve the use of Matlab to calculate the Hurst coefficient of wavelet.)
- 2008-03-27 13:54:38下载
- 积分：1
