DFT_matlab

说明：  城市环境的过程式建模技术研究。。。。。。。。。。(The process of urban environment modeling technology research of)

这个包包括了一个多类代价敏感学习方法Rescalenew。这是一个通用的方法,如instance-weighting, sampling, threshold-moving等。(This package includes a multi-class cost-sensitive learning method Rescalenew. This is a general method which can be realized in many ways such as instance-weighting, sampling, threshold-moving, etc. This package includes five implementations of the method, that is, instance-weighting+C4.5, over-sampling+C4.5, under-sampling+C4.5, threshold-moving+NN and threshold-moving+PETs (probability estimation trees). )

精通simulink系统仿真与控制，具体介绍了siumulink工具箱及函数(Simulink® is an environment for multidomain simulation and Model-Based Design for dynamic and embedded systems. It provides an interactive graphical environment and a customizable set of block libraries that let you design, simulate, implement)

An article very useful to perform Galois field computations

基于纹理特征的图像检索源码，通过双树复小波进行纹理特征提取(Texture-based image retrieval source, through the dual tree complex wavelet texture feature extraction)

有小波分析的盲信号处理，采用波束成形技术的BER计算，采用偏最小二乘法，多元数据分析的主分量分析投影，部分实现了追踪测速迭代松弛算法，欢迎大家下载学习。( There Wavelet Analysis Blind Signal Processing, By applying the beam forming technology of BER Partial least squares method, Principal component analysis of multivariate data analysis projection, Partially achieved tracking speed iterative relaxation algorithm, Welcome to download the study.)

通过excel将输入读入matlab中，计算文件第四列元素的最大值，最小值和均方根值，对应z波面拟合中的PV RMS的计算。上传文件中包括excel文件(Input read by excel in matlab to calculate the column IV of document elements of the maximum, minimum and RMS values, corresponding to zernike Wavefront fitting of PV RMS calculation)

matlab 的拟牛顿方法，减少计算导数带来的计算量的一种迭代方法，用来计算非线性问题。(matlab quasi-Newton methods to reduce the computational calculation of the amount of the derivative of an iterative method to calculate the nonlinear problem.)

说明：  流场的本征正交分解，降阶，数据分析，提取流场中的主要流动结构(Proper Orthogonal Decomposition)

在图像检索中需要利用对图像的形状处理，本代码求7个HU不变矩(In image retrieval need to use the shape of the image processing, the code same moment seeking 7 HU)