蒙特卡洛方法matlab程序

hattrick110

贴一个蒙特卡洛方法的matlab程序，供大家使用。
祝大家比赛都能取得好成绩


" ?7 }8 _! U+ u- T8 q3 O% Example Monte Carlo Simulation in Matlab
% Function: y = x2^2/x1
%
/ p) Q, N3 [, _3 S9 I0 @+ X% Generate n samples from a normal distribution
% r = ( randn(n,1) * sd ) + mu
% mu : mean
% sd : standard deviation
%
& P. L# Q( N3 N: m% Generate n samples from a uniform distribution
% r = a + rand(n,1) * (b-a)
3 Y7 h6 ]& \0 u% a : minimum
% b : maximum
n = 100000; % The number of function evaluations
& T- w' O( E! f$ ^! F, P5 q+ v. h% --- Generate vectors of random inputs
( {& q7 s: Q  k" p% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
/ B2 n8 d- c, q/ e: a* fx2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
% Note the use of element-wise multiplication
" r5 i  ~7 P9 U# l' }9 M/ Cy = x2.^2 ./ x1;
& o* _# J8 E0 V1 ?& K& j% ^% --- Create a histogram of the results (50 bins)
hist(y,50);
% --- Calculate summary statistics
1 B% J# z: y" F+ B8 w% ^' T! [! ty_mean = mean(y)
8 W  ~# a0 c& m# V/ S" K6 sy_std = std(y)
y_median = median(y)

FANGGB

gyy1627207

虽然看不懂，但是也别想学习

空空火柴盒

太赞了，还不用体力值下载，楼主好人啊

空空火柴盒

太赞了，还不用体力值下载，楼主好人啊

谢小谢

多谢额。。。。。。

薛云涛

蚍蜉的野望

8ilovel8

看着很简单……但到底怎么回事啊……

gzxz

我是菜鸟，不懂。好好学习