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。
  @% M% a( ~1 Q2 C4 C' B3 ?6 s祝大家比赛都能取得好成绩
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: |5 _% F1 j4 v% u" J1 Y% Example Monte Carlo Simulation in Matlab
0 p( x  `8 w0 @3 J% Function: y = x2^2/x1
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% Generate n samples from a normal distribution
  [& v9 q5 m0 U3 U% r = ( randn(n,1) * sd ) + mu
" S$ P8 ~% J, g1 B; e2 Y% mu : mean
% sd : standard deviation
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+ A$ V9 ~, h2 I! `! V8 z( z* t# A% Generate n samples from a uniform distribution
, C; I+ K+ @; s+ U0 E. Y% r = a + rand(n,1) * (b-a)
% a : minimum
% b : maximum
$ A) L& _9 N) fn = 100000; % The number of function evaluations
% --- Generate vectors of random inputs
; ]  n; N( Y5 ]4 A- K% x1 ~ Normal distribution N(mean=100,sd=5)
% x2 ~ Uniform distribution U(a=5,b=15)
# j8 ?1 k% u/ D: px1 = ( randn(n,1) * 5 ) + 100;
x2 = 5 + rand(n,1) * ( 15 - 5 );
% --- Run the simulation
  l! ~) c9 X1 R# f- N& y% Note the use of element-wise multiplication
9 C5 `5 B( j$ N* w' p9 o5 }0 i( yy = x2.^2 ./ x1;
7 J+ _( {$ U) I/ t2 B2 f% --- Create a histogram of the results (50 bins)
) d0 a8 l( o2 t  q1 m. F' uhist(y,50);
/ s+ a) R( R$ }8 R% --- 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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!