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
* b, i. M5 M, @# F/ [5 h) h9 ?

% Example Monte Carlo Simulation in Matlab
% Function: y = x2^2/x1
7 q8 V+ M: k6 }%
% Generate n samples from a normal distribution
% r = ( randn(n,1) * sd ) + mu
% mu : mean
% sd : standard deviation
%
% Generate n samples from a uniform distribution
3 I; z' x! O5 U2 Q0 \* s( t9 z% r = a + rand(n,1) * (b-a)
% a : minimum
% b : maximum
, z" e& ~- a5 O. ^+ {n = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
; ^. t7 u% {) y  K% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
; W1 }1 N5 M# t  Yx1 = ( randn(n,1) * 5 ) + 100;
3 i( A' J& J, K6 b" ]* U8 ?x2 = 5 + rand(n,1) * ( 15 - 5 );
2 c, k- t7 R1 v- X- q: z# d% --- Run the simulation
* |" o- k& n! |9 K( M$ _6 F, |% Note the use of element-wise multiplication
. ^( x- x6 L/ M2 H! Q; Oy = x2.^2 ./ x1;
% --- Create a histogram of the results (50 bins)
hist(y,50);
% --- Calculate summary statistics
$ N: k1 _8 N% J! a; x7 ly_mean = mean(y)
$ p5 j' A5 s& }; Z; b4 @/ a8 Ky_std = std(y)
8 e( J% d- h2 zy_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!