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MLP_BP1
基本bp算法,实现函数的拟合,提供给大家分享(Bp basic algorithms, implementation of the fitting function, available to everyone to share)
- 2009-03-20 09:06:42下载
- 积分:1
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chirp_sig
线性调频信号,包括产生和脉冲压缩,国科大资料(Chirp signal, the National Science and Technology Institute of China)
- 2013-09-28 22:07:59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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单级倒立摆
设计一个模糊PID控制器,以及单级倒立摆simulink系统,使其可是实现对单级倒立摆的的优化控制。(Design a fuzzy PID controller and a single-stage inverted pendulum simulink system to achieve optimal control of the single-stage inverted pendulum.)
- 2019-05-16 08:18:36下载
- 积分:1
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new
This program takes the speech file and number of poles as inputs and gives LPC coefficients and the gain factor as output.Also includes code to find out LSFs.Code for LMS algorithm also included.
- 2014-08-19 17:34:46下载
- 积分:1
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2光伏电源+配网
这是光伏电源并网的配网模型,里面包含boost,mppt,逆变器,10kv配电网(This is the distribution network model of photovoltaic power grid, which contains boost, MPPT, inverter, 10kV distribution network.)
- 2018-03-21 10:12:16下载
- 积分:1
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GraphicsAndGUIsWithMATLAB3rdEd2003Part3
Using Graphics in MatLab
- 2010-12-13 10:33:58下载
- 积分:1
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withcoding
六边形生成以及检测边界通过画出六边形 是研究图像边缘检测的一个小算法。(find the bianjie)
- 2012-03-31 23:39:29下载
- 积分:1
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CompositeViewer
OSG中怎样创建多视图,利用OSG+Win32 console application实现。(make multiply views in osg)
- 2013-11-30 14:50:46下载
- 积分:1
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learn_AR
learn AR process
- 2012-01-17 23:49:11下载
- 积分:1