chapter2-vectorization

寻找测试样本的最近邻，可以有效的用于用于模式识别，信号处理(This is a small but efficient tool to perform K-nearest neighbor search, which has wide Science and Engineering applications, such as pattern recognition, data mining and signal processing. The code was initially implemented through vectorization. After discussions with John D Errico, I realized that my algorithm will suffer numerical accurancy problem for data with large values. Then, after trying several approaches, I found simple loops with JIT acceleration is the most efficient solution. Now, the performance of the code is comparable with kd-tree even the latter is coded in a mex file. The code is very simple, hence is also suitable for beginner to learn knn search.)

说明：  基于MATLAB的BP神经网络的数据分类的实现。(MATLAB-based BP neural network implementation of data classification.)

MP广义逆的介绍，推导和求解过程等等，欢迎下载(Moore_Penrose text)

Matlab高级讲义之matlab语言基础(Matlab senior notes- matlab language based)

设计巴特沃斯和切比雪夫滤波器，实现低通滤波，并计算滤波系数，给出效果图(Design a 20-order Butterworth filter, low-pass filter, and the filter coefficient calculation gives renderings)

An understanding of heat rates starts with an fundamental understanding of the following terms. · Incremental Costs and Incremental Heat Rates · Average Costs and Average Heat Rates · Input-Output Curves

matlab代码，用于计算表面等离子体与物质的相互作用(for the interaction of SPR and mass)

三相异步电机直接起动的起动转矩较大，但起动电流也大，通常用于小功率电机。(Three-phase asynchronous motor starting torque direct start a larger, but the starting current is also large, normally used for low-power motor.)

在对PSK系统进行仿真，要求：对M=4的PSK系统，分别取信噪比为odB、10dB和20dB，在星座图上观察接收端接收到的信号向量。 (in the PSK system simulation, requirements : M = 4 for the PSK system, the signal-to-noise were taken odB. 10dB and 20dB, in the constellation observation receiving termination received signal vector.)

wavelet technique is used for fault identification