huadli 可以用如下sas程序 proc reg data=sdata outtest=data graphics; model v1=v2 v3 / ridge=0.0 to 0.1 by 0.01 0.2 0.3 0.4 0.5; plot/ridgeplot; run; 下面还有主成分估计 proc reg data=data outest=data; model v1=v2 v3/pcomit=1,2,3,4,5; run;