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
" Q. v% ~+ O' c" n4 {  d' ~% Function: y = x2^2/x1
%
' E; i& {- I% \8 z6 O# h; a2 N% Generate n samples from a normal distribution
1 o2 ~# |1 u. A" E% r = ( randn(n,1) * sd ) + mu
; A1 K/ t9 r1 c: p% mu : mean
% sd : standard deviation
%
% Generate n samples from a uniform distribution
% r = a + rand(n,1) * (b-a)
% a : minimum
. A7 S# W7 q  @7 p5 |% b : maximum
( }# E# i3 Z* S% D7 Hn = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
3 a! e& F# N/ C( y( i% q/ V% x2 ~ Uniform distribution U(a=5,b=15)
* N5 G$ M2 B0 Y3 gx1 = ( randn(n,1) * 5 ) + 100;
0 A/ I) }/ M8 O4 `* K8 Dx2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
% Note the use of element-wise multiplication
4 e$ j& a; ]3 ]2 R3 ~# Y& ^y = x2.^2 ./ x1;
% --- Create a histogram of the results (50 bins)
hist(y,50);
+ j& r+ ]( [4 _! k, n% --- Calculate summary statistics
y_mean = mean(y)
& Z+ \0 k  H$ |+ j6 U4 iy_std = std(y)
y_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!