-
Matlabhanshu
说明: matlab图像处理函数的详细列表,可实现查找(matlab image processing function of a detailed list can be realized to find)
- 2008-11-06 17:16:16下载
- 积分:1
-
OFDM
说明: 使用matlab对ofdm系统进行仿真和误比特率的分析(Ofdm systems using matlab on simulation and analysis of bit error rate)
- 2010-04-25 10:41:00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
-
15883868calculate_farfield
说明: 天线阵列方向图求解,通过对辐射特性确定去天线的参数,来达到预期方向图(Antenna array pattern solving)
- 2019-09-26 12:00:33下载
- 积分:1
-
bozcuoglu_hw3
MATLAB IMPLEMENTATION
OF STAR ALGORITHM
- 2010-11-23 02:41:05下载
- 积分:1
-
Road_detection
基于模糊连接度的道路提取源码 基于模糊连接度的道路提取源码 (Source of road extraction based on fuzzy connectedness)
- 2016-10-31 18:46:16下载
- 积分:1
-
CALGUI
MATLAB编写的简易计算机~设置GUI界面(MATLAB summary prepared by the computer-settings GUI interface)
- 2009-04-03 21:24:13下载
- 积分:1
-
Augmented-recursive-
自适应控制中,用Matlab算法实现增广递推最小二乘参数估计(Adaptive control, augmented with Matlab algorithm recursive least squares parameter estimation)
- 2011-06-24 21:51:34下载
- 积分:1
-
iteratmed-solve-linearequa
基于MATLAB环境下的运用迭代法求解线性方程组的对应的代码 简单易学 便于初学者消化使用(Based on MATLAB environment using iterative method for solving linear equations corresponding code is easy to learn for beginners to use digest)
- 2013-09-15 00:11:36下载
- 积分:1
-
SAR-MATLABtoolbox
一本适合于合成孔径雷达成像技术的matlab程序设计资料,包含详细的matlab程序,中间步骤和图像(SAR image formation toolbox for MATLAB)
- 2014-11-24 21:10:10下载
- 积分:1