DIGITAL_MOD

基于MATLAB的地震正演模型实现,很适合初学者学习掌握(MATLAB-based seismic forward model implementation, it is suitable for beginners to learn to master)

本文采用小波神经网络进行交通流量预测，短时交通流量存在随机性和非线性因素，影响预测的准确性。传统预测模型难以反映交通流量变化特点，同时传统神经网络易陷入局部极小值，泛化能力差，交通流量预测精度低。为了提高短时交通流量预测精度，提出一种小波神经网络的短时交通流量预测模型。小波神经网络可以对短时交通流量随机性、不确定性进行局部分析，并进行非线性预测，验证了模型的有效性，进行了对比试验。验证结果表明，小波神经网络提高了短时交通流量预精度，预测结果更具应用价值。(In this paper, wavelet neural network is used to forecast traffic flow. There are random and nonlinear factors in short-term traffic flow, affecting the accuracy of prediction. The traditional prediction model is difficult to reflect the characteristics of traffic flow changes. At the same time, the traditional neural network is easy to fall into the local minimum, the generalization ability is poor, and the prediction accuracy of traffic flow is low. In order to improve the accuracy of short-term traffic flow forecasting, a short-term traffic flow prediction model based on wavelet neural network is proposed. The wavelet neural network can analyze the randomness and uncertainty of short-term traffic flow and perform nonlinear prediction. The validity of the model is verified and a comparative experiment is conducted. The verification results show that the wavelet neural network improves the short-term traffic flow pre-precision, and the prediction result has more application value.)

matlab 命令汇总，包括各种常用命令，尤其适用于图像处理(matlab command summary, including a variety of commonly used commands, especially for image processing)

公司专用的抄表册同步工具，仿360页面制作，配合兰德或欧珩杰抄表机使用(Copy list synchronization tool company specific, imitation 360 page production, with Rand or European Hengjie meter reading machine use )

绘制月球磁场分布图，178阶球谐函数编制，目前最准确的月球磁场模型(Drawing the lunar magnetic field maps, the 178 order spherical harmonics preparation, most accurate lunar magnetic field model)

有限单元法求解一阶偏微分方程，使用的方法是加权余量法，比二阶方程更加可靠(Finite element method for second order partial differential equations, a method using a weighted residual method is more reliable than the first-order equation)

说明：  里面包含了插值，函数逼近的各个算法。很知道大家去学习(Which contains the interpolation, function approximation of the various algorithms. We are aware that to learn)

说明：  matlab遗传算法实现论文，十分经典有用，对学习遗传算法编程很有帮助。(matlab genetic algorithm papers, very classic useful and helpful in learning genetic algorithm programming.)

说明：  libsvm的参数c，g的交叉验证子函数(libsvm parameters c, g the cross-validation Functions)

这是对广义高斯分布中两个参数alpha,beta的估计方法，对自然图像的大量统计特征就符合这一分布。(function [f, g] = dggbeta(beta, absx) DGGBETA Derivative of generalized Gaussian pdf with respective to beta [F, G] = DGGBETA(BETA, ABSX) Return partial derivative and second order partial derivative This is an utility function for GGMLE ABSX is the distance of the data from the mean Function is undefined for negative beta if beta <= 0 f = NaN g = NaN )