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%»ùÓÚìØµÄÊôÐÔÀëÉ¢»¯·½·¨£¬²Î¼û¡¶Ò»ÖÖ»ùÓÚìØµÄÁ¬ÐøÊôÐÔÀëÉ¢»¯·½·¨¡· function [result,dds]=shang(data) [m,n]=size(data); result=zeros(10,5); for i=1:n %%%%%%%%%%%%%%%%%¼ÆËã»®·Öµã setpoints=[]; seqs=[]; locs=[]; %%%%%%%%%%%%%%%µ±³öÏÖÓÐÏàͨÊôÐÔÖµµÄÑù±¾µãʱ£¬È¥µôÆäÓàµÄÖ»±£ÁôÒ»¸ö£¬ÎªºóÃæ %ΪºóÃæ¼ÆËã¶Ïµã×ö×¼±¸ [seqs,locs]=sort(data(:,i)); se=seqs; for bbs=1:m-1 if se(bbs)==se(bbs+1) qs=bbs+1; while se(bbs)==se(qs) se(qs)=inf; end end end se(find(se==inf))=[]; newlen=length(se); %%%%%%%%%%%%%%%%% for j=1:newlen-1 %¼ÆËã¶ÏµãµÄÖµ setpoints(j)=(se(j)+se(j+1))/2; end %%%%%%%%%%%%%%%%% nn=length(setpoints);%¼ÆËãÏÖÓÐÄÚ²¿¶ÏµãÊý for t1=1:nn+1 %¼ÆËã¸÷¸ö¶Ïµã´¦µÄ¿¨·½Í³¼ÆÖµ %%%%%%%%%%¼ÆË㿨·½·Ö²¼Öµ if t1==1 s1=length(find(-inf s1=length(find(setpoints(t1-1)<=seqs&seqs s1=length(find(setpoints(t1-1)<=seqs&seqs num(t1)=s1; P(t1)=s1/m; end%½Ó for t1=1:nn+1 Hmin(1)=-sum(P.*log2(P));%³õʼìØÖµ k0=length(setpoints); H0=Hmin(1); Ck=zeros(1,2);%³õʼ»¯Ck,ÁíCk(2)=0ÊÇΪÁËËüÄܹ»½øÈëÑ»·while Ck(2)-Ck(1)>=0 %Ck(2)ÊǺϲ¢Çø¼äºóµÄÖµ£¬ÔÚwhileÑ»·ÖлáÉèÖà %%%%%%%%%%%%%%%%%%Ñ»· symbol=0; while Ck(2)-Ck(1)>=0 Ck(1)=Ck(2); if symbol==1 setpt(ad)=[]; setpoints=[]; setpoints=setpt; end Q=[]; H=[]; num=[]; setpt=[]; nn=length(setpoints);%¼ÆËãÏÖÓÐÄÚ²¿¶ÏµãÊý setpt=setpoints; for c1=1:nn%¼ÆËãÈ¥µôÿ¸ö¶ÏµãËùµÃµÄìØÖµ£¬ÕÒ³öÆäÖÐìØ²î×îСµÄÒ»¸ö×÷ΪºÏ²¢¶ÔÏó setpoints=[]; setpoints=setpt; setpoints(c1)=[]; tt=length(setpoints); for t2=1:tt+1 %¼ÆËã¸÷¸ö¶Ïµã´¦µÄ¿¨·½Í³¼ÆÖµ %%%%%%%%%%¼ÆË㿨·½·Ö²¼Öµ if t2==1 s1=length(find(-inf s1=length(find(setpoints(t2-1)<=seqs&seqs s1=length(find(setpoints(t2-1)<=seqs&seqs num(t2)=s1; Q(t1)=s1/m; end%½Ó for t1=1:nn+1 H(c1)=-sum(Q.*log2(Q));%ºóÐø¼ÆËãËùµÃìØÖµ end symbol=1; [Hmin(2),ad]=min(H); % Ck(2)=(nn)*Hmin(2)-Hmin(1)*(nn-1); Ck(2)=(k0)*Hmin(2)-H0*(nn-1); Hmin(1)=Hmin(2); end nt=length(setpt); result(1:nt,i)=setpt; end pointsnum=[]; %½«¸÷¸öÇø¼äµÄÖµÀëÉ¢»¯ dds=zeros(m,n); for i=1:n locd=[]; locd=result(:,i); locd(find(locd==0))=[]; pointsnum(i)=length(locd)+1;%Çø¼ä¸öÊý if length(locd)~=0 for j=1:pointsnum(i) if j==1 dds(find(-inf elseif j==pointsnum(i) dds(find(locd(j-1)<=data(:,i)&data(:,i) dds(find(locd(j-1)<=data(:,i)&data(:,i)<=locd(j)),i)=j; end end end end |
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