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
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% Example Monte Carlo Simulation in Matlab
% Function: y = x2^2/x1
! l& R# H7 s2 N. a0 K8 Q( \  F6 p%
% Generate n samples from a normal distribution
% r = ( randn(n,1) * sd ) + mu
% mu : mean
2 K7 W9 B( L& u2 Z) W- M% sd : standard deviation
%
% Generate n samples from a uniform distribution
8 l2 w. c# g7 ^% r = a + rand(n,1) * (b-a)
" J( w% m4 n5 C1 L0 p# q. n% a : minimum
( _& _4 z  w' e% b : maximum
  H" o9 s' C3 T2 Nn = 100000; % The number of function evaluations
4 r( p# v9 T- D" Z" U% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
4 Q1 V! x" C7 F% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
3 i3 B2 a. y5 ^) o% G" N' ~0 ix2 = 5 + rand(n,1) * ( 15 - 5 );
- L& R4 e6 J; g: ~3 q7 z- l% --- Run the simulation
5 o9 @& p. v; }  x% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
% --- Create a histogram of the results (50 bins)
hist(y,50);
  F( B/ \! s( x; K$ _$ N/ K# D% --- Calculate summary statistics
y_mean = mean(y)
y_std = std(y)
) V3 o1 X, a, |3 h" S9 u- ~7 fy_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!