derivatives_nn

aco feature selection

可以实现二进9/7小波提升格式的小波变换，希望对大家学习和研究提升小波变换有帮助。(can achieve two into 9/7 wavelet upgrade format wavelet transform, we hope to enhance learning and research help wavelet transform.)

基于神经网络估算断面客流量与出行量之间的OD矩阵(OD matrix estimation section between the amount of traffic and travel based on neural network)

matlab关于解偏微分方程的教程 里面有很多例子和程序供读者学习(Matlab on the solution of partial differential equations. There are many examples and procedures for the readers to learn)

该代码为多频外差四频相移的原理程序，开发环境为MATLAB,可以帮助初学者快速了解外差法的原理。(The code on multiple frequency heterodyne principle of four frequency phase shift process, development environment of MATLAB, can help beginners to quickly understand the heterodyne principle. )

据S参数反演提取磁导率以及介电常数折射率(S parameters to extract permeability and dielectric constant)

An Matlab implementation neural program

说明：  Matlab工具箱已经成为一个系列产品，Matlab主工具箱和各种工具箱（toolbox ）。(Matlab toolbox has become a series of products, Matlab toolbox and a variety of main toolbox (toolbox).)

说明：  　通过在MA TLAB 图形窗口中加入菜单及控制, 实现直接对窗口对象的操作, 建立了一个 适合用户需要的语音分析处理平台, 并给出了一般的设计方法.(MA TLAB graphics window by adding menus and control, the direct operation of the window object, the establishment of a voice suited to user needs analysis and processing platform, Further calculation and analyzation of the design Fangfa.)

利用Matlab/Siulink搭建的一个光伏电池充放电模型，通过仿真，能较好地体现光伏电池充放电特性(Use Matlab/Siulink to build a photovoltaic cell charge and discharge model, through simulation, to better reflect the charge and discharge characteristics of the photovoltaic cells)