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a_envelope
Create a channel object that describes the channel that you want to use. A channel object is a type of MATLAB variable that contains information about the channel, such as the maximum Doppler shift.
- 2009-07-02 11:04:02下载
- 积分:1
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Poisson
说明: 自适应算法中possion过程解的程序代码,紧接着上一篇上载内容(possion solves)
- 2010-04-14 10:28:29下载
- 积分:1
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nongdufenbu
根据地理坐标和分析对象的浓度值画出浓度分布图的程序(According to the procedures of the geographical coordinates and the concentration of the analyte values to draw concentration maps)
- 2012-06-22 11:42:58下载
- 积分:1
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FOC1
异步电动机数量控制完整仿真模型,可以根据实际情况写该参数,达到研究者所需要的情形(The number of complete induction motor control simulation model, the parameter can be written according to the actual situation, the researchers needed to achieve the situation)
- 2013-12-17 13:02:42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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POWER-FLUX-STEVENSON
POWER FLUX
IS THE EXAMPLE FROM STEVENSON
THIS DOCUMENTO IS SO GOOD
- 2013-01-23 00:35:04下载
- 积分:1
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OFDMDVB
这是一个关于ofdm dvb源码matlab环境运行,文件比较多(This is a matlab code ofdm dvb on the running environment, documents are more)
- 2009-04-20 15:25:13下载
- 积分:1
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hpf
High Pass Filter for some frequency
- 2013-12-04 09:33:18下载
- 积分:1
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ambiguity-function
ambiguity function matlab code
- 2013-10-29 20:12:36下载
- 积分:1
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MSE_compare
ofdm信道估计的MSE性能比较,阐述了几种经典算法仿真性能的对比(MSE compare of OFDM estimation)
- 2010-11-11 09:23:28下载
- 积分:1