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
% Function: y = x2^2/x1
%
% Generate n samples from a normal distribution
% r = ( randn(n,1) * sd ) + mu
8 [$ k% H* @2 K7 o$ _. \% mu : mean
# K& W* `! r. l! M: T6 }- X) A% sd : standard deviation
& h9 m+ J0 m; Q2 `, r6 ]! A%
" Q% ^5 U# B. k& F' g- [" J% Generate n samples from a uniform distribution
1 n5 K) k7 c) l" N% r = a + rand(n,1) * (b-a)
& d2 U4 j# b! S# M7 S- R0 f% a : minimum
% b : maximum
+ j6 x0 I6 b* N! Gn = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
+ }& J& b& T/ M. lx1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
$ w) ^! _  U( V8 z. n1 y% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
) D- ~3 O9 f& Z$ `3 W! {% --- Create a histogram of the results (50 bins)
hist(y,50);
$ W6 p9 \  ~/ R% --- Calculate summary statistics
9 _5 H  Z+ k/ @" @y_mean = mean(y)
' z4 Z* K/ @  T  Yy_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!