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。
. Q7 S* ^0 S3 W% i1 ?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
' y% U7 u' Y' a- B' Z%
$ c  y4 m4 Z! o# @! l% w+ W7 T: c% o% Generate n samples from a normal distribution
# B$ {" W8 N' }2 J! J% r = ( randn(n,1) * sd ) + mu
6 }1 C! _( h$ g: Z+ u. }. W% mu : mean
% sd : standard deviation
%
% Generate n samples from a uniform distribution
% r = a + rand(n,1) * (b-a)
  t: B( Z% U" m* \: t$ G% a : minimum
  ^0 V  D' a) l% I% b : maximum
$ H3 }$ u7 P  r& P* P1 ?8 }n = 100000; % The number of function evaluations
; C  e9 h: P2 o% --- Generate vectors of random inputs
% x1 ~ Normal distribution N(mean=100,sd=5)
7 f/ J5 Z0 U  E% E% x2 ~ Uniform distribution U(a=5,b=15)
x1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
% Note the use of element-wise multiplication
y = x2.^2 ./ x1;
% --- Create a histogram of the results (50 bins)
hist(y,50);
% --- Calculate summary statistics
  Y" w# Z; Z$ D# O' \+ N1 Ry_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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!