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HistogramEqualization
histogram equalization in matlab
- 2009-09-10 18:24:52下载
- 积分:1
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qdpskcd
说明: 通信原理的系统仿真系列--code&decode for QDPSK。供刚接触到matlab的朋友参考。(communications system simulation series-- code)
- 2006-04-17 09:59:42下载
- 积分:1
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trans01
通过对大量顾客购买数据进行分析,即购物篮模型,然后给出合理的建议(SHOPPING ansys)
- 2013-08-21 23:37:22下载
- 积分:1
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yilvbo
表情图像的滤波处理,已经运行过能用,但是使用时,记得改一下路径。(biao qing picture de lv bo chu li,yi jing yu xing guo ,ke yi yong.bu guo ji de yao gai yi xia lu jing.)
- 2012-04-19 22:37:18下载
- 积分:1
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jpeg3
matlab source code to perform jpeg compression using humfman coding
- 2010-12-30 19:34:58下载
- 积分:1
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FDPoission.tar
Finite difference modeling of Poisson equation: A very simple learning code
- 2013-11-14 19:35:14下载
- 积分:1
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PlotModeWave
基于matlab模拟大学物理中的波形,以便观察其动态变化(University physics-based simulation matlab waveform in order to observe the dynamic changes)
- 2014-06-02 23:33:39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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显式格式求解一维热传导问题matlab程序
求解四层复合材料的第一类边界条件下一维热传导问题(Solving one-dimensional heat conduction problem of four layered composite under the first boundary condition)
- 2021-01-15 10:48:46下载
- 积分:1
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A_Hashtabl59627352002
hash table based on the visual C++
- 2010-04-24 18:02:25下载
- 积分:1