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。
# S3 ?/ B$ o& h1 H  V祝大家比赛都能取得好成绩

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- [" z4 p( G+ x  E9 w8 `. d" d% Example Monte Carlo Simulation in Matlab
% Function: y = x2^2/x1
%
2 v# k4 U# p1 M# t, i% Generate n samples from a normal distribution
5 D& ?4 i# Y) p0 ?% r = ( randn(n,1) * sd ) + mu
% mu : mean
% sd : standard deviation
8 L7 p. U2 A1 ~  p%
, e3 R& n/ a9 j- ?# _% Generate n samples from a uniform distribution
* }$ G7 a: {' o; e% r = a + rand(n,1) * (b-a)
$ P8 N$ i' b; g. b5 z5 o9 p% a : minimum
% b : maximum
+ L# q) w3 J7 w0 \7 f2 Xn = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
7 O% T- q- I2 O% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
$ Z/ C& \% Y; ^: r8 U% --- Run the simulation
% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
( G, k& t* X: Z% V! p! j) z' c6 ]% --- Create a histogram of the results (50 bins)
4 G3 `3 H' f, Ghist(y,50);
, J3 P1 u  ?% _% --- Calculate summary statistics
y_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!