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
%
9 L. Q4 V+ q  I$ e) S% Generate n samples from a normal distribution
) a3 |; c& ^- b5 g- h, g! x% r = ( randn(n,1) * sd ) + mu
% mu : mean
) ^8 E5 N' k% c( x  C9 R: C, N& F% sd : standard deviation
%
% Generate n samples from a uniform distribution
  s1 ~' h  ?* N0 M. M* i  v0 y% r = a + rand(n,1) * (b-a)
1 W; m  c7 P' A8 E9 ?2 G6 T% a : minimum
% b : maximum
2 ?; b* h$ x5 O) v3 `n = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
3 ^1 V$ a5 d# o+ ]" ^% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
: Y0 e( d6 D5 n, K, wx2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
1 C6 d' F6 [* Q' _0 Q% C- b: Z% Note the use of element-wise multiplication
6 e. P4 i! e$ ]2 h: P& iy = x2.^2 ./ x1;
% --- Create a histogram of the results (50 bins)
" i  t, q' j$ }: {# b( @  ?$ H' Chist(y,50);
% --- Calculate summary statistics
% l; T1 i' {7 s, m0 P4 xy_mean = mean(y)
! o$ s! c5 Y) d# H: Q3 o# {  my_std = std(y)
9 J5 R6 \, f+ C; m& z& }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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!