Newton

tf-idf用于文档聚类，权重计算，用MATLAB实现的，自己编写非常好用！(tf-idf for Document Clustering, weight calculation, use MATLAB to achieve, I have written is very easy to use!)

gmsk的matlab实现，可直接运行，自己编写的，请高手指点(GMSK matlab to achieve the direct running, I have written, please expert advice)

说明：  Sheffield大学遗传算法工具箱源码(Source of genetic algorithm toolbox Sheffield University)

In the fields of computer vision and image analysis, the Harris-affine region detector belongs to the category of feature detection. Feature detection is a preprocessing step of several algorithms that rely on identifying characteristic points or interest points so to make correspondences between images, recognize textures, categorize objects or build panoramas.

具有微分先行的PID控制方法，可以设置M参数查看控制效果（M=1为微分先行的控制效果）。(PID control with derivative first method, you can see the control effect parameters set M (M = 1 for the first derivative of the control effect).)

介绍了matlab与vc的混合编程，和常见问题解决方案(Introduces MATLAB and VC mixed programming, and common problems and Solutions)

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

unit conversion function which can convert most of the engineering units

eof分解 想要的拿走吧 自己随便写的 有问题的话可以email我(eof decomposition want take it easily write their own needs to take the trip)

永磁同步电机模型参考自适应估算电机转速。值得参考。无错。(Model reference adaptive estimation of permanent magnet synchronous motor. Worth reference. No mistake.)