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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7 U* N7 @0 I0 ~# {
% Example Monte Carlo Simulation in Matlab
- U& y4 {. x3 ~, S& [2 Q4 B% Function: y = x2^2/x1
) Z& K/ O! g1 i* |3 j/ m/ d& \. l- \%
7 U  _6 l/ z) V: Y5 A; e* V% Generate n samples from a normal distribution
" v/ w! Z# X- N) V& b% r = ( randn(n,1) * sd ) + mu
% mu : mean
% sd : standard deviation
%
% Generate n samples from a uniform distribution
+ l& T# Q2 [" F6 D$ i" ?; u# m% r = a + rand(n,1) * (b-a)
% a : minimum
% b : maximum
: b+ s/ t3 Q9 a2 u$ an = 100000; % The number of function evaluations
" X- T8 g7 f% F, f  X1 A  d% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
8 j: e$ ~& O2 c0 q% d7 s+ }x2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
3 W$ \& t5 e4 i  ?3 `- l; D. r; o% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
/ s  ]1 d7 B- N  ^5 k& }" j% --- Create a histogram of the results (50 bins)
hist(y,50);
# S6 r8 Z# ?9 h3 N7 L7 @% --- Calculate summary statistics
y_mean = mean(y)
2 J/ ~+ M" A" `- }1 b: Y" A$ ky_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!