Cjulei

图像压缩的MATLAB算法之JEPG(完整的例程)(MATLAB JEPG)

good for understanding

Matlab 滤波程序，适合初学者学习使用，欢迎大家分享(Matlab filtering procedures, suitable for beginners learning to use, we are happy to share)

这是现代数字信号处理课程中涉及到的实验，预测太阳黑子周期的，包含周期图法和burg法。(This is a modern digital signal processing courses related to the experiment, predicted sunspot cycle, including the periodogram method and burg method.)

说明：  一组开发基于XILINX FPGA开发DSP算法的应用资料，具有实用性，可操作性。（3）(a group Xilinx FPGA-based DSP algorithm development of the information is useful, operability. (3))

This z usful doc for all software engineers on 97-things-every-software-architect-should-know.

It contains sample files of Extended Kalman Filter (EKF).

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 )

针对Zemax2003版，可以读取Zemax的光线追迹数据，即*.zrd文件便于后期处理；(this program is designed to read*.zrd file for zemax2003)

matlab仿真双级矩阵变换器的逆变程序，包括判断扇区，计算相位角等(matlab simulation of two-stage matrix converter inverter procedures, including the judge sectors, calculating the phase angle)