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pcmcoding
PCM在matlab环境下的脉冲编码，编码译码，波形仿真(PCM pulse code, coding, decoding)
- 2009-05-07 12:23:01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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classic
经典的matlab算法代码，包括顶点覆盖近似算法，哈密尔顿回路，最短路和次短路，最短路径等等。(Classical algorithm matlab code, including the vertex cover approximation algorithm, Hamilton circuit, the most short-circuit and sub-circuit, the shortest path and so on.)
- 2009-04-26 16:06:14下载
- 积分：1
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ElrevueVol02No03p41_46
Modeling of Energy Consumption of Zigbee
Devices in Matlab Tool
- 2013-01-20 03:06:18下载
- 积分：1
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MATLAB-command
matlab的一些典型的命令的操作名，我也不知道还怎么样介绍了(some typical matlab command operation)
- 2012-05-09 10:45:33下载
- 积分：1
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diagen
diagen, modeling diagenesis trend for sediments
- 2013-08-08 06:11:03下载
- 积分：1
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FBG
基于labvieW的光纤光栅采集程序，使用了MOI公司的sm125解调仪。(FBG based labvieW collection procedures, the use of MOI' s sm125 demodulator.)
- 2013-10-16 22:05:45下载
- 积分：1
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BDhuang
说明： 多通道和单通道接收到的北斗信号数据，利用接收到的北斗数据（.dat .txt文件），进行解析，得到初始伪距，平滑伪距，载波相位，并计算其标准差，并画图。(The Beidou signal data received by multi-channel and single channel are analyzed by using the Beidou data (. Dat. TXT file). The initial pseudo range, smooth pseudo range and carrier phase are obtained, and the standard deviation is calculated and plotted.)
- 2019-11-26 15:18:24下载
- 积分：1
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L01p_e
[x,f]= L01p_e(c,A,b,N)用枚举法求解下列
0-1线性规划问题min f=c *x, s.t. A*x<=b,x的分量全为整数0或1, 其中N表示约束条件 Ax ≤ b中的前N个是等式，N= 0时可以省略。 返回结果x是最优解，f是最优解处的函数值。 ([X, f] = L01p_e (c, A, b, N) with the following enumeration method for solving linear programming problems 0-1 min f = c ' * x, st A* x < = b, x is an integer of all components 0 or 1, where N represents the constraints Ax ≤ b in the equation of the first N, N = 0 can be omitted. Return result x is the optimal solution, f is the function value at the optimal solution.)
- 2013-07-16 21:51:03下载
- 积分：1
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parameterization
3×3窗口计算最大最小曲率坡度和断面曲率(chart compute)
- 2011-10-30 15:56:40下载
- 积分：1
