-
cliprightmargin
this clips the right margin of the document
- 2010-08-18 15:21:47下载
- 积分:1
-
ami
平均互信息函数法:平均互信息函数法的基本思想是:选取互信息函数第一次达到局部极小值时的时间作为最佳延迟时间。(AMI Average mutual information function)
- 2021-01-05 15:38:54下载
- 积分:1
-
11041112_1-
MATLAB 高斯分布 瑞利分布 泊松分布随机数产生源代码(MATLAB gaussion possion rayleigh)
- 2012-09-24 20:03:36下载
- 积分:1
-
FFTK
一个FFT改进版程序,使用kaiser窗;可以方便地打出信号的频谱包络,以及算出SNR/SINAD/THD/SFDR等各种数值。工程上使用非常便利(FFT with Kaiser Wndw, easily plot out the Frequent spetrum and the SNR/SINAD/THD/SFDR performance values)
- 2021-02-20 21:59:43下载
- 积分:1
-
rare2012
Rare2012: A multi-scale rarity-based saliency detection with its comparative statistical analysis
- 2015-03-08 19:47:12下载
- 积分:1
-
svm
Matlab平台上的支持向量机SVM的源码实现(Matlab SVM )
- 2012-01-02 09:39:10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
-
Dual-Parallel_MUSIC
基于双平行线阵的声矢量传感器的MUSIC算法 用于在高斯白噪声环境下估计信号的到2维达角度 (MUSIC algorithm based on dual parallel linear array of acoustic vector sensor
it can be used to estimate the signal in Gaussian white noise environment to the two Vader angle)
- 2014-10-22 17:11:42下载
- 积分:1
-
QPSK_oQPSK
本程序,包含QPSK,OQPSK的产生过程,I、Q领路信号抽取,他们的频谱,包络情况,经过带通滤波器后的变化,经过非线性放大器后的频谱变化等。是一个很好的学习例程!(This procedure, including QPSK, OQPSK production process, I, Q signal extraction lead the way, their spectrum envelope case, after band-pass filter after the change, through non-linear changes in the spectrum after the amplifier. Is a good learning routines!)
- 2011-12-29 20:58:54下载
- 积分:1
-
kml-example
goolgle earth的kml动画 基础示例 对了解kml动画的相关内容有帮助(kml animation foundation for understanding the example goolgle earth kml animation related content helpful)
- 2014-11-05 16:07:27下载
- 积分:1