snipplrCallback({"id":22110,"title":"true-positive-rate-and-false-positive-rate-for-receiver-operating-characteristics-roc-and-area-under-the-curve","source":"
  1. function<\/span> [<\/span>TP,FP]<\/span>=getfptp(<\/span>T,Y)<\/span><\/div><\/li>
  2.     Y(<\/span>Y>=0<\/span>)<\/span>=1<\/span>;Y(<\/span>Y<0<\/span>)<\/span>=-1<\/span>;  % target class (positive) is 1<\/span><\/div><\/li>
  3.     TP=sum<\/span><\/a>(<\/span> (<\/span> (<\/span>Y==1<\/span>)<\/span> + (<\/span>T==1<\/span>)<\/span> )<\/span>==2<\/span> )<\/span>;<\/div><\/li>
  4.     FN=sum<\/span><\/a>(<\/span> (<\/span> (<\/span>Y==-1<\/span>)<\/span> + (<\/span>T==1<\/span>)<\/span> )<\/span>==2<\/span> )<\/span>;<\/div><\/li>
  5.     FP=sum<\/span><\/a>(<\/span> (<\/span> (<\/span>Y==1<\/span>)<\/span> + (<\/span>T==-1<\/span>)<\/span> )<\/span>==2<\/span> )<\/span>;<\/div><\/li>
  6.     TN=sum<\/span><\/a>(<\/span> (<\/span> (<\/span>Y==-1<\/span>)<\/span> + (<\/span>T==-1<\/span>)<\/span> )<\/span>==2<\/span> )<\/span>;<\/div><\/li>
  7.     TP=TP\/(<\/span>TP+FN)<\/span>;<\/div><\/li>
  8.     FP=FP\/(<\/span>FP+TN)<\/span>;<\/div><\/li>
  9. end<\/span><\/div><\/li><\/ol><\/pre>","link":"https:\/\/snipplr.com\/view\/22110\/true-positive-rate-and-false-positive-rate-for-receiver-operating-characteristics-roc-and-area-under-the-curve"});