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pangteng1990

½ð³æ (ÕýʽдÊÖ)

[ÇóÖú] Ũ¶Èһʱ¼ä±È·¨È·¶¨·´Ó¦¼¶ÊýºÍ¼ÆËãËÙÂʳ£Êý ¸½´øMATLAB³ÌÐò³ö´í£¬Çó´óÉñ½ÌÎÒ

edit t.m %ÊäÈëʱ¼äÊý¾Ý
edit c.m %ÊäÈëŨ¶ÈÊý¾Ý¡¢
%Êý¾Ý´¦Àí³ÌÐò fyjs.m
load t.m %µ÷Èëʱ¼äÊý¾Ý
load c.m %µ÷ÈëŨ¶ÈÊý¾Ý
NO=max(size(t));
CO=c(1,1);
x=[];
tb=[];
for i=2:1:NO
    a=(c(1,1)-c(1,i))./c(1,1); %½«Å¨¶ÈÊý¾Ýת»¯Îª×ª»¯ÂÊ
    x=[x,a];
end
t(1:1)=[];
N=max(size(t));
sn=[];
for i=1:1:N-1
    for j=i+1:1:N
        b=t(1,j)./t(1,i); %¼ÆËã²â¶¨Êý¾ÝÖК°Á½×éÊý¾ÝµÄʱ¼ä±È
        tb=[tb,b];
    end
end
st=sum(tb); %¼ÆËã×Üʱ¼ä±È
tn=[];
for n=-3:0.001:3; %Ö𲽱ƽüËÑË÷£¬´Ó-3¼¶µ½3¼¶£¬²½³¤Îª0.001
    xn=[];
    for i=1:1:N-1
        for j=i+1:1:N
            if n==1
                w=log(1-x(1,j))./log(1-x(1,i)); %·´Ó¦¼¶Êýn=1ʱµÄŨ¶È±È
            else
                w=((1-x(1,j)).^(1-n)-1)./((1-x(1,i)).^(1-n)-1); %·´Ó¦¼¶Êýn¡Ù1ʱµÄŨ¶È±È
            end
            xn=[xn,w];
        end
    end
    tn=[tn,n];
    sn=[sn,sum(xn)]; %½¨Á¢²»Í¬¼¶ÊýÏÂ×ÜŨ¶È±È¼¯ºÏ
end
d=[];
for k=1:1:max(size(sn))
    d=abs([d,sn(1,k)-st]); %½¨Á¢×ÜŨ¶È±ÈºÍ×Üʱ¼ä±ÈµÄ²îµÄ¼¯ºÏ
end
for k=1:1:max(size(sn))
    if abs(sn(1,k)-st)==min(d); %ËÑË÷×îС²îÖµµÄλÖÃ
        n=tn(1,k); %¼Ç¼×îС²îÖµµÄ·´Ó¦¼¶Êý
    end
end
kc=[];
for k=1:1:NO-1
    if n==1
        p=-log(1-x(1,k))./t(1,k); %¼ÆËã·´Ó¦¼¶Êýn=1ʱµÄËÙÂʳ£Êý
    else
        p=CO.^(1-n).*((1-x(1,k)).^(1-n)-1)./(n-1)./t(1,k); %¼ÆËã·´Ó¦¼¶Êýn¡Ù1ʱµÄËÙÂʳ£Êý
        kc=[kc,p];
    end
end
k=sum(kc)./(N-1); %¼ÆËãËÙÂʳ£ÊýµÄƽ¾ùÖµ
n
k
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