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fauver
求解fault cover掩盖故障的新方法(A new method for solving fault cover)
- 2011-01-25 13:49:01下载
- 积分:1
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bl
说明: 针对调幅信号求包络波的问题,给出求调幅信号的包络程序(Demand for AM signal envelope wave problem, given the program seek AM signal envelope)
- 2014-11-24 21:02:00下载
- 积分:1
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Compressed-sensing-program
很好的一个压缩感知程序压缩感知程序(a very good Compressed sensing program )
- 2012-11-19 20:47:22下载
- 积分:1
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线性代数实验及MATLAB入门
说明: 线性代数实验及MATLAB入门,电子工业出版社出版 陈怀琛 龚杰民合著(linear algebra tests and MATLAB entry, the electronics industry publishing house Huai-China co-authored al.)
- 2006-01-28 14:51:14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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tsai
matlab下的两步法标定程序,应该对大家有所帮助(matlab under the two-step calibration process should be helpful to everyone)
- 2007-10-15 12:14:26下载
- 积分:1
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Amplifier
放大器及数据转换器选择指南,放大器电路设计的好助手。(Amplifier and Data Converter Selection Guide, a good amplifier circuit design assistant.)
- 2010-09-01 17:50:01下载
- 积分:1
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facerecognizeANN
人脸识别的程序,matlab (face recognition procedures, the procedures for face recognition Matlab, Matlab)
- 2007-03-20 12:36:54下载
- 积分:1
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mathematical-modeling-
全国大学生数学建模问题,是非常重要的国家级赛程,这对于我们很有帮助的啊!(National Mathematical modeling is very important for evey students,so it is very good for prevent students,and,it is good for our.)
- 2011-06-28 20:20:22下载
- 积分:1
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model1500
Simulink model of a 1.5 MW wind turbine with direct-driven permanent magnet generator
- 2011-07-30 14:50:17下载
- 积分:1