-
BFGS
拟牛顿法和最速下降法(Steepest Descent Methods)一样只要求每一步迭代时知道目标函数的梯度。通过测量梯度的变化，构造一个目标函数的模型使之足以产生超线性收敛性。这类方法大大优于最速下降法，尤其对于困难的问题。另外，因为拟牛顿法不需要二阶导数的信息，所以有时比牛顿法(Newton s Method)更为有效。如今，优化软件中包含了大量的拟牛顿算法用来解决无约束，约束，和大规模的优化问题。(The quasi-Newton method and the Steepest Descent Methods only require that each step iterations know the gradient of the objective function. By measuring the change of the gradient, constructing a model of the objective function is sufficient to produce superlinear convergence. This method is much better than the steepest descent method, especially for difficult problems. In addition, because the quasi-Newton method does not require information on the second derivative, it is sometimes more effective than the Newton s Method. Today, the optimization software contains a large number of quasi-Newton algorithm used to solve the unconstrained, constraint, and large-scale optimization problems.)
- 2017-05-05 10:28:29下载
- 积分：1
-
MonteCarlosimulation
几何布朗运动的Monte Carlo模拟以及美式期权定价(Geometric Brownian motion of the Monte Carlo simulation as well as the American option pricing)
- 2007-11-07 11:46:27下载
- 积分：1
-
function-trans
Function tranfer example
- 2011-01-29 04:43:13下载
- 积分：1
-
LBGMatlab
使用matlab实现的矢量量化的LBG算法，内有文档说明(Matlab achieved using the LBG vector quantization algorithm, there are documented)
- 2009-04-27 17:27:16下载
- 积分：1
-
fdtda
i need FDTD code using MATLAB
- 2015-03-16 21:41:16下载
- 积分：1
-
LMS
最小均方濾波器是一類可通過最小化誤差訊號之均方值而修正濾波器係數，以類比所需理想濾波器的自適應濾波器，其中作為修正依據的誤差訊號為理想參考訊號與實際輸出訊號之差。該種濾波器所用之最小均方法只以當前之訊號誤差值為準進行修正，是一種隨機梯度下降法。最小均方法係由斯坦福大學的Bernard Widrow教授及他的首位博士班學生Marcian Hoff於1960年提出。最小均方濾波器屬於常見的自適應濾波器種類之一。(The minimum mean square filter is an adaptive filter that can correct the filter coefficients by minimizing the mean square value of the error signal to analogize the desired ideal filter. The error signal used as the correction reference is the ideal reference signal and the actual output. The difference between the signals. The minimum averaging method used in this kind of filter is only corrected based on the current signal error value, which is a stochastic gradient descent method. The minimum mean method was proposed in 1960 by Professor Bernard Widrow of Stanford University and his first PhD student, Marcian Hoff. The least mean square filter is one of the common types of adaptive filters.)
- 2019-02-21 22:43:06下载
- 积分：1
-
WalshHadamardtransforms
一维沃尔什和哈达马变换核计算程序，数字图像处理的基础算法(Walsh and Hada Ma Weaver transformation of a nuclear computer program based on digital image processing algorithms)
- 2010-12-06 10:02:52下载
- 积分：1
-
fengjunbi
目前已经提出了许多不同的算法来解决OFDM 系统中的PAPR 问题，本章详
细介绍了其中的限幅法、压缩扩张法、星座图扩展法、选择性映射法和部分传输
序列法。在介绍每一种算法时，针对其主要存在的问题进行了相应的改进，使每
一种算法都成为比较实用的算法。(Has put forward a number of different algorithms to solve the problem PAPR OFDM system, this chapter details
Fine describes one of the limiting, compression expansion method, constellation expansion method, selective mapping method and partial transmission
Sequence method. In introducing each algorithm, for which the main problem for the corresponding improvements, so that each
An algorithm have become more practical algorithms.)
- 2014-08-17 12:32:24下载
- 积分：1
-
LTE
the matlab code for lte simulation and 4g mobile
- 2013-12-04 16:36:29下载
- 积分：1
-
Underwater--channel-simulation-
水声信道仿真程序。用于水下声信道的仿真。(Underwater acoustic channel simulation program.Used in underwater acoustic channel simulation.)
- 2021-04-25 22:08:46下载
- 积分：1
