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
" \2 b# t1 M, F% D5 q% v%
% Generate n samples from a normal distribution
- G1 t: }* g1 R! w. q# q/ P0 {8 a% r = ( randn(n,1) * sd ) + mu
* ?5 j9 _9 @; [% mu : mean
% sd : standard deviation
* H( h, ]# n. e# x8 y%
% Generate n samples from a uniform distribution
4 I; x- x- i* ?9 `; H- u. T3 s% r = a + rand(n,1) * (b-a)
  g) D+ v5 M  C: d% a : minimum
7 X; R+ j! o7 C0 J( E& s' }/ c" B; M& u% b : maximum
% l" e6 X3 O  a) o, E, k) z! Ln = 100000; % The number of function evaluations
/ c" o. Y6 C6 W0 n8 W% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
& V- o7 G: h: d+ B* Ox1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
* @- H) e6 d' P& \( @' E  X! D; \% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
: j0 C1 `/ s* `" B: x* V5 B% --- Create a histogram of the results (50 bins)
hist(y,50);
% --- Calculate summary statistics
3 [7 W% s. j* S- Dy_mean = mean(y)
y_std = std(y)
4 n; o1 Q9 }2 @0 gy_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!