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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: W  X6 x' j; P2 q/ `6 P1 W) Z$ |. {% Example Monte Carlo Simulation in Matlab
: ~1 Q. a4 c  ]- ^9 z5 i8 V& D% Function: y = x2^2/x1
%
% Generate n samples from a normal distribution
" @. a5 z3 q4 N/ w; T: ^# u% r = ( randn(n,1) * sd ) + mu
% mu : mean
% sd : standard deviation
%
% Generate n samples from a uniform distribution
% E9 K/ r# Z% i% D+ O* o$ R% r = a + rand(n,1) * (b-a)
% a : minimum
% b : maximum
+ @* `3 [( B6 |8 K2 vn = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
" \6 ^8 t9 m: F0 H1 R6 v3 S% x1 ~ Normal distribution N(mean=100,sd=5)
, g5 _# A. L) o1 u; @% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
0 ?* @8 w" I% |, Z5 H6 `$ ?, {% --- Run the simulation
! i) O, t2 b( G  u% M% Note the use of element-wise multiplication
. r) t* v7 z$ D1 V" T8 i& Uy = x2.^2 ./ x1;
3 z& t: ]# Z6 a, N% --- Create a histogram of the results (50 bins)
! l" s1 W' A! ?* Y2 e! J; c5 ~6 jhist(y,50);
% --- Calculate summary statistics
1 a5 f3 w" o, g% @. py_mean = mean(y)
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!