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
$ g( j4 P) z6 z+ h; D6 H1 Q%
% Generate n samples from a normal distribution
% r = ( randn(n,1) * sd ) + mu
% mu : mean
. I3 [7 ]. c; ?* b3 G5 O% sd : standard deviation
%
1 Z* A) a# u: u+ @1 o: F% Generate n samples from a uniform distribution
0 p# ]+ S& V1 K1 a, L% r = a + rand(n,1) * (b-a)
% a : minimum
% b : maximum
& g' H& r# ~: j$ @/ c/ S3 P& _: C% }n = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
) k$ [* J2 y9 |7 ^8 Y2 u% x2 ~ Uniform distribution U(a=5,b=15)
7 O& H7 [7 u( H6 \9 mx1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
' t4 v# M7 T8 u% P: Q% --- Run the simulation
% Note the use of element-wise multiplication
" j' f8 @1 V+ z/ D4 dy = x2.^2 ./ x1;
" q) |! Y; _# `) K- J% --- Create a histogram of the results (50 bins)
3 @6 V4 M  V- A& F: @- t' Thist(y,50);
% --- Calculate summary statistics
y_mean = mean(y)
y_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!