-
commtbx
Matlab communication toolbox.
- 2007-01-08 10:25:59下载
- 积分：1
-
frequencyerr
This simulation plots the Effective SNR of and OFDM as a function of Output Power
Backoff from 0 to 9.5 dB, for three different number of carriers.
- 2010-05-20 15:11:22下载
- 积分：1
-
MCA
通过三个具体实例介绍乐MATLAB语言在化学中的应用，说明在数值计算方面其有着比目前流行的高级语言FORTRAN,PASCAL,C无法比拟的强大功能(through three specific examples music MATLAB in chemistry applications, Note the numerical calculation of their share than the currently popular high-level language FORTRAN, and PASCAL. C can not compare with the powerful functions)
- 2006-11-28 17:12:36下载
- 积分：1
-
New-folder
power electric simulation in matlab simulink
- 2013-12-10 22:29:39下载
- 积分：1
-
matlab
MATLAB语言常用算法程序集，对学习信号处理者有一定的帮助(MATLAB language commonly used algorithm for the assembly, signal processing in learning to help those who have some)
- 2010-08-05 15:57:29下载
- 积分：1
-
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
-
SIFT_YantaoNoemie
MATLAB关于图像配准的，包括图像的关键点筛选和配准的效果展示。(MATLAB on image registration, including the image of the key points of the effect of screening and registration display.)
- 2014-08-06 10:08:31下载
- 积分：1
-
circulararraymusic
经典的均匀圆阵下仰俯角和到达角的二维联合MUSIC估计(Classic under the Uniform Circular Array仰俯angle and arrival angle of the two-dimensional co-MUSIC estimates)
- 2008-04-01 15:48:32下载
- 积分：1
-
mat
matlab programs miscellaneous
- 2012-05-29 02:50:00下载
- 积分：1
-
well_2_sats
this is a well data number 2 for RPH sample, stored in las format
- 2013-09-01 00:47:13下载
- 积分：1
