Integral-Transformation

变增益PID算法的c++实现，目前PID算法较多的是c代码写的，这里上传一个C++的(Variable gain PID algorithm c++ to achieve, the current is more PID algorithm code written in c, where a C++ From the)

利用Python实现特征的MinMax标准化和Z-Score标准化两种特征归一化方法。并用原特征、两种归一化特征分别进行朴素贝叶斯模型训练，比较模型性能。(Two normalization methods of MinMax normalization and Z-Score standardization are implemented by Python. The naive Bayes model is trained with the original features and two normalization features respectively to compare the performance of the model.)

contourlet变换工具箱，附带贝叶斯阈值去噪(Toolbox contourlet transform, with Bayesian threshold denoising)

T矩阵方法的FORTRAN环境下的程序，希望对大家有帮助！(T matrix method program FORTRAN environment, we want to help!)

说明：  在科学与工程计算中，经常遇到求解非线性方程组的问题；非线性方程组在收敛速度及收敛性比线性方程组要差，特别对于非凸的非线性方程组，其求解更是困难。下面简要介绍非线性方程组的三种解法——牛顿法、拟牛顿法、同伦算法，分析三种解法的适用性，并附Matlab原程序。(Scientific and engineering computing, often encounter the problem of solving nonlinear equations speed of convergence of nonlinear equations and linear equations worse than convergence, especially for non-convex nonlinear equations, which is even more difficult to solve . The following briefly describes three solutions to nonlinear equations- Newton method, quasi-Newton method, homotopy method, the applicability of the three solutions, along with Matlab original program.)

计算水声传播的快速场(FFP)程序，基于传播矩阵，迭代和快速傅里叶变换方法。(underwater acoustic field computing Fast FIELD Program, based on TMM, FFT etc.)

资料中提供了对应的数据和程序，其中程序能够实现对三维数据的拟合。(It can realize data fitting)

说明：  摩擦力是抵抗固體表面，流體層和材料元件相對滑動的相對運動的力。有幾種類型的摩擦：幹摩擦是一種與之相反的力(friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the)

自己编的5种调制信号，混沌的判断指标Lyapunov指数计算,信号维数的估计。( Own five modulation signal, Chaos indicator for Lyapunov index calculation, Signal dimension estimates.)

Fortran算法集徐士良版，数值模拟，矩阵运算、线性方程求解、非线性方程求解、插值、数值积分(Fortran algorithm set Xu tillian version, numerical simulation, calculation of matrix, linear equations, nonlinear equations, interpolation, numerical integration)