%编写惩罚函数pen.m function y=pen(x) s=0; for i=1:1:length(x) s=s+x(i) end y=min(0,min(x)).^2+(1-s).^2; %编写交易费用函数h.m function y=h(x,u,p) if(x>u) y=x*p else if(i>0) y=x*p else y=0 end end %编写目标函数f.m function y=f(x) global w; global M; r=[0.28,0.21,0.23,0.25,0.05]; q=0.01*[2.5,1.5,5.5,2.6,0]; p=0.01*[1,2,4.5,6.5,0]; u=[103,198,52,40,0]; penalty=1e-25; t=0; for i=1:1:4 t=t+h(x(i)*M,u(1),p(i)); end t=t-M*sum(r.*x); y=w*t-(1-w)*max(x.*q)*M+penalty*pen(x); for k=1:1:11 w=(k-1)*0.1; s=5000; for j=1:1:50 c=rand(1,5); d=sum©; x0=c/d; [x,fval]=fminsearch('f',x0); if(f(x)<s) s=f(x); xc=x; end t=0; for i=1:1:4 t=t=h(xc(i)*M,u(i),p(i)); end FR(k)=f(xc); net(k)=t+M*sum(r.*xc); risk(k)=M*max(xc.q); xn(k,=xc; end figure(1); plot(w,xn(:,1),'.',w,xn(:2),'-',w,xn(:3),'--',w,xn(:,4),'\-',w,xn(:,5),'\');
自己找了这个方法,但是最后为什么画不出表啊~~~~~~+ z3 o: L9 x Q% W
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