-
levelsetcode
基于Li模型的水平集图像分割方法，无需重新初始化，提高了图像分割的效率。(Li model based on the level set method of image segmentation, without reinitializes the, improve the efficiency of the image segmentation.
)
- 2011-05-24 19:17:31下载
- 积分：1
-
DS-CDMA_Simulation-(1)
Simulation of DS-CDMA
- 2014-10-21 16:40:18下载
- 积分：1
-
SARFilter
SAR图像三种滤波方法： 1、gamma_MAP滤波； 2、均方差滤波： 3、Lee滤波(SAR image filtering method three: 1, gamma_MAP filter 2, mean square error filter: 3, Lee filter)
- 2020-09-18 22:17:54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
-
multirate
Multirate Filtering for Digital Signal Processing
- 2020-12-22 16:59:06下载
- 积分：1
-
LTE_ch_Estimation
LTE的下行信道估计mse的测试，采用了LTE的下行频域结构，LS信道估计，线性插值算法。(LTE downlink channel estimation mse of testing, using LTE downlink frequency domain structure, LS channel estimation, linear interpolation algorithm.)
- 2009-11-02 11:00:48下载
- 积分：1
-
manual
Mat lab user e-book file
- 2010-01-15 22:32:18下载
- 积分：1
-
BasicKernelPCA
The uploaded file is written to understand the basic knowledge for Kernel PCA.
- 2011-05-31 11:30:40下载
- 积分：1
-
Caverninjection
盐穴储气库注采计算,能很好的计算盐穴型地下储气库的注采过程，并计算注采中的相关参数。(injection simulation in USG of carven)
- 2013-11-06 00:08:59下载
- 积分：1
-
kalman
matlab mdl 的卡尔曼滤波程序清晰简洁(matlab mdl Kalman filtering procedures clear and concise)
- 2013-12-21 22:44:14下载
- 积分：1
