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


% Example Monte Carlo Simulation in Matlab
* h! d4 t8 I: H8 g: R% Function: y = x2^2/x1
( O5 _" h" I  y%
% Generate n samples from a normal distribution
5 w8 u: F/ g2 Y1 Z$ ~- `% r = ( randn(n,1) * sd ) + mu
, J( W$ F* y- F' E+ A% mu : mean
% sd : standard deviation
2 o7 H3 t3 u7 d! z6 \/ [  R/ }/ _  A4 A%
% Generate n samples from a uniform distribution
3 Q2 Y0 t* y" {, u! M9 K7 f3 |' h5 U% r = a + rand(n,1) * (b-a)
% a : minimum
% b : maximum
n = 100000; % The number of function evaluations
0 I6 d9 |& T, X2 o% --- Generate vectors of random inputs
7 C! r( G2 F- S7 ~% x1 ~ Normal distribution N(mean=100,sd=5)
0 E, U0 Y* {5 ]" g% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
. i0 s% G% E) T! K7 ^* Y% --- Run the simulation
% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
% --- Create a histogram of the results (50 bins)
: A$ u. x) }9 O' L* lhist(y,50);
  L" E' ~  G+ C7 Z& b9 {1 r% --- Calculate summary statistics
y_mean = mean(y)
y_std = std(y)
- X9 r/ R5 u6 i9 Hy_median = median(y)

mma

多谢拉！！！！！！！

sjtucat5

thankyouverymuch

tzhggx

顶啊！不错啊！

BigTou

谢谢啦...................

rever99

个盲目反卷积程序是用模拟退火法做的，想请教

jafy2009

哈哈哈。。。谢谢！！！

eyehappy

thank you!!!!

cherry_s1218

看看。。。。。。

shuxinjian24134

xinga!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!