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Lecture4

于 2010-05-01 发布文件大小:148KB

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说明：关于解微分方程的matlab小程序，适合本科生学习使用。(MATLAB in Physics is a four lecture series in MATLAB that is offered to first year physics undergraduate students. This lecture shows how to use MATLAB to simulate physical systems using a range of methods. Projectile motion is analysed using the Symbolic Math Toolbox, then more complicated chaotic systems are simulated using the MATLAB ODE solvers. Some advanced programming techniques such as Object Oriented Programming (OOP) and Graphical User Interface (GUI) programming are briefly covered. The aim of this lecture series is to introduce students to computational methods in MATLAB to solve problems arising in physics that cannot be solved analytically. No prior knowledge of MATLAB is required. Themes of data analysis, visualization, modelling and programming are explored throughout these lectures. )

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poin
此MATLAB程序为运行非线性系统的庞家莱截面程序，以DUFFING系统为例。(This is the MATLAB procedure for running the nonlinear system of pincare section program,take DUFFING system, for instance.)

2013-04-30 08:36:18下载

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sorted
它通过对矩阵分解，相当于对矩阵做了正交化处理，方法我们进行信号检测信道估计等。(It can matrix factorization, the matrix made equivalent to orthogonalization processing, signal detection method we channel estimation.)

2014-12-02 10:54:13下载

积分：1
PSOTrainBP
BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

2018-08-06 11:04:45下载

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mli2niveauxMLI
COMMANDE D un convertiseur AC/DC 脿 deux niveaux par MLI

2009-03-03 17:02:29下载

积分：1
sjwl
神经网络的matlab源码，可以运行，查看结果，非常棒(Neural network matlab source)

2012-11-19 20:57:16下载

积分：1
数字信号处理的上机实习报告！关于声音的采样！
说明：健身球检验分类机MATLAB应用--音乐信号处理MATLAB应用--音乐信号处理(fitness test signal separation machines MATLAB applications-- music MATLAB signal processing applications-- music Signal Processing)

2006-01-08 14:56:00下载

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gui
该功能用matlab实现的几个界面，可供新手们参考学习下哈(This feature is implemented with a few matlab interface for novices to learn under reference Ha)

2011-06-09 21:04:52下载

积分：1
NGA
小生境遗传算法，该算法易于找出优化问题的所有局部最优解和全局最优解(Niche Genetic Algorithm. The algorithm is easy to find the optimization problem in all local optimal solution and the global optimal solution)

2014-11-17 21:46:00下载

积分：1
coefficientcalculating
计算一个序列的AR模型系数的前3个系数值,非常好用(Calculating a sequence of former three coefficients AR model coefficients, very handy)

2015-03-03 16:18:47下载

积分：1
industrial-strength
eBook - Industrial Strength C++ - Visual C++ guide

2014-02-02 13:03:09下载

积分：1

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