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matlab数值积分程序，里面包括了常用的matlab数值积分的程序，包括手写的和matlab自还的函数。(matlab numerical integration procedures, which include commonly used matlab numerical integration procedures, including hand-written and self is also a function of matlab.)

Particle swarm optimization has been used to solve many optimization problems since it was proposed by Kennedy and Eberhart in 1995 [4]. After that, they published one book [9] and several papers on this topic [5][7][13][15], one of which did a study on its performance using four nonlinear functions adopted as a benchmark by many researchers in this area. In PSO, each particle moves in the search space with a velocity according to its own previous best solution and its group’s previous best solution. The dimension of the search space can be any positive integer.

小波去噪函数，各种去噪滤波器以及滤波函数的matlab函数程序(Wavelet denoising function, various de-noising filters and filter function matlab function program)

Decomposition and reconstruction example 1

fMRI算功能网络。输入资料为90个AAL脑区的BOLD均值，输出为二值网络(fMRI count function network. The input data for AAL 90 brain regions the BOLD mean, output binary network)

This code calculate the PSNR between the original and the distored image, and give the value of this PSNR.

灰色系统理论是研究解决灰色系统分析、建模、 预测、决策和控制的理论.灰色预测是对灰色系统 所做的预测.目前常用的一些预测方法（如回归分 析等），需要较大的样本.若样本较小，常造成较 大误差，使预测目标失效.灰色预测模型所需建模 信息少，运算方便，建模精度高，在各种预测领 域都有着广泛的应用，是处理小样本预测问题的 有效工具(Grey system theory is the research and solution of grey system analysis, modeling, The theory of prediction, decision - making and control At present, some commonly used prediction methods (such as regression score) If the sample size is small, it often results in a comparison Large error, so that the prediction of the target failure Less information, convenient operation, high modeling accuracy, in a variety of prediction collar Fields are widely used to deal with small sample prediction problems Effective tool)

对获得的512维小波特征进行了PCA降维处理，将特征空间降至100维，并采用前面得出的最佳系数针对多项式核函数和高斯径向基核函数(On access to the 512-dimensional wavelet features to reduce the dimension of the PCA, will feature space to 100 dimensions, and using the best coefficients obtained for the previous polynomial kernel function and Gaussian radial basis function)

无功补偿不平衡负载，阶梯调制，MATLAB仿真图，运行效果良好，欢迎借鉴(Reactive power compensation unbalanced load, step modulation, MATLAB simulation map, running well, welcome to learn)

matlab code for digital signal processing