jieoukz

n mathematics, a wavelet series is a representation of a square-integrable (real- or complex-valued) function by a certain orthonormal series generated by a wavelet. Nowadays, wavelet transformation is one of the most popular candidates of the time-frequency-transformations. This article provides a formal, mathematical definition of an orthonormal wavelet and of the integral wavelet transform

灰色系统GM（1，n）模型的源代码，实现多因素作用下复杂系统的预测。(Gray system GM (1, n) model of the source code, under the effect of multi-factor prediction of complex systems.)

包括无监督和监督的机器学习技术 • K-means and other clustering tools • Neural Networks • Decision trees and ensemble learning • Naï ve Bayes Classification • Linear, logistic and nonlinear regression(Highlights include unsupervised and supervised machine learning techniques including: • K-means and other clustering tools • Neural Networks • Decision trees and ensemble learning • Naï ve Bayes Classification • Linear, logistic and nonlinear regression)

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)

有限元方法求解带有混合边值条件的二维椭圆方程的matlab程序(Finite element method for solving two-dimensional elliptic equations with mixed boundary conditions matlab program)

matlab数字图像矩阵的现实及傅里叶变换matlab digital image matrix of reality and the Fourier transform(matlab digital image matrix of reality and the Fourier transform matlab digital image matrix of reality and the Fourier transform)

分别用Kmeans FCM和dbscan算法进行聚类比较，内附UCI数据，可以进行验证(Respectively Kmeans FCM clustering algorithm and compare dbscan, enclosing UCI data that can be verified)

压缩感知：3维压缩感知重构算法，采用最速下降法和梯度投影原理,逐步逼近最优解。是本人精心编写调试好的，请放心使用。(cs:3 dimensional compressive sensing reconstruction algorithm, using the steepest descent method and the gradient projection principle, and gradually approaching the optimal solution. )

在PID控制中，微分信号的引入可改善系统的动态特性，但也易引起高频干扰。在误差扰动突变时尤其显出微分项的不足。若在控制算法中加入低通滤波器，则可使系统性能得到改善。(In PID control, the introduction of differential signal can improve the dynamic characteristics of the system, but it can also cause high-frequency interference. When error perturbations change abrupt, the deficiency of differential terms especially shows. If the low-pass filter is added to the control algorithm, the performance of the system can be improved.)

This book is about signal processing, which includes processes for synthesizing, transforming, and analyzing signals. It focuses on sound signals, but the same methods apply to other signals, like electronic signals and mechanical vibration.