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clear;clc;
muX = [22;10;2];sigmaX = [2;0.9;0.6];
sLn = sqrt(log(1+(sigmaX(1)/muX(1))^2));
mLn = log(muX(1))-sLn^2/2;
aEv = sqrt(6)*sigmaX(3)/pi;
uEv = -psi(1)*aEv-muX(3);  
muX1=muX;sigmaX1 =sigmaX;   
x =muX;normX = eps;         
while abs(norm(x)-normX)/normX > 1e-6
    normX=norm(x);
    g = x(1)-x(2)-x(3);
    gX = [1;-1;-1];
    cdfX =[logncdf(x(1),mLn,sLn);1-evcdf(-x(3),uEv,aEv)];
    pdfX =[lognpdf(x(1),mLn,sLn);evpdf(-x(3),uEv,aEv)];
    nc = norminv(cdfX);
    sigmaX1(1:2:3) =normpdf(nc)./pdfX;
    muX1(1:2:3) = [x(1:2:3)-nc.*sigmaX1(1:2:3)];
    gs = gX.*sigmaX1;
    alphaX = -gs./norm(gs);
    bbeta = (g+gX'*(muX1-x))/norm(gs);
    x =muX1+bbeta*sigmaX1.*alphaX;
   end
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Ìú³æ (ÖøÃûдÊÖ)

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2Â¥: Originally posted by liaobudenan at 2014-10-21 21:53:08
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