diffraction

KNN classifiers, training is training set, testing is test set, D is the distance, D=1 is mandistance D=2 is 欧氏距离 D=3是 infinite norm K is the number of selected neighbors

用matlab实现的PCA算法，用于人脸检测和识别，人脸图像的特征提取(algorithm of PCA of face detection by matlab)

resistive and inductive load. simulation also demonstrate the role of free wheeling diode. Single phase pulse generator was developed to generate the pulses at required firing angle.

English version for matlab learning(easy to learn and simple to use)

本文将SOM（自组织特征映射）和PNN（概率）神经网络应用到柴油机故障诊断中，首先介绍了SOM和PNN神经网络的算法，然后对柴油机的故障进行了分析，并运用matlab进行了仿真，验证了实验结果。(This article will SOM (self-organizing feature map) and PNN (probability) neural network is applied to fault diagnosis of diesel engine, first introduced the SOM and PNN neural network algorithm, and then analyses the fault of diesel engine, and has carried on the simulation using matlab, verify the experimental results.)

Randon Variables,expectation value, Gaussian distributions, white Nosie, probability density

The attached source code is the implemenation of acoustic echo canceller and noise reduction.

该程序是关于参数化功率谱估计，这些源程序是经过验证的，很好使用(The program is about the parametric power spectrum estimation, the source is a proven, well used)

说明：  基于RSSI的定位，已知发射节点的发射信号强度, 接收节点根据接收信号的强度, 计算出传播损耗, 利用理论的或经验的信号传播模型将传播损耗转化为距离, 然后再计算出节点的位置。(Based on RSSI positioning, the transmitting signal strength of the transmitting node is known, and the receiving node calculates the propagation loss according to the received signal strength. The propagation loss is converted into distance by using the theoretical or empirical signal propagation model, and then the position of the node is calculated.)

calculatePXTheta---Calculate the probability of each pixel being its color conditioned on all of the clusters that were found at the previous (coarser) iteration. (calculatePXTheta-- Calculate the proba bility of each pixel being its color conditione d on all of the clusters that were found at the pre vious (coarser) iteration.)