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
- E- }  I+ }% d

% Example Monte Carlo Simulation in Matlab
5 A6 h3 |# @- |: [% Function: y = x2^2/x1
; G) r- c3 g* k0 a, a%
% Generate n samples from a normal distribution
% r = ( randn(n,1) * sd ) + mu
, O; N6 z# y4 @1 P; h4 f/ z" b! Z' z% mu : mean
% sd : standard deviation
" I: ^6 E* g+ J* R/ h* i; p# S%
  b$ ]( q, ^5 G  ?3 M$ M- _% Generate n samples from a uniform distribution
( n, o0 D3 c& p. _8 B% r = a + rand(n,1) * (b-a)
/ w# c3 s% c: F* r! p# S" v7 k5 n- [% a : minimum
0 Y. n3 q  U! R% b : maximum
6 b! V9 t6 d- bn = 100000; % The number of function evaluations
8 [5 h' X, @2 p+ p/ u8 Y% i3 q% --- Generate vectors of random inputs
6 r' Y' \: G5 O% h+ a% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
, d" Q# y1 Y( m$ Q: B1 P% --- Run the simulation
% Note the use of element-wise multiplication
# X1 V& U& J9 M* U) ^, ly = x2.^2 ./ x1;
/ r7 n5 m. k( M3 v7 J) ?2 M7 L% --- Create a histogram of the results (50 bins)
hist(y,50);
% --- Calculate summary statistics
y_mean = mean(y)
1 |+ N1 \6 A: V, R6 }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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!