Created
July 24, 2013 00:24
-
-
Save x0xMaximus/6067235 to your computer and use it in GitHub Desktop.
Javascript false positive and negative rate
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var user = [0,1,0,0,1,0,0,1,1,0,0,0,1,0], | |
truth = [0,1,1,1,0,0,0,0,1,1,0,0,1,1]; | |
function compare(user, truth) { | |
var a = 0, b = 0, c = 0, d = 0, fpr, fnr; | |
if( truth.length !== user.length ) return; | |
for (var i = 0; i < truth.length; i++) { | |
switch(user[i] + truth[i]) { | |
case 0: ++d; break; | |
case 2: ++a; break; | |
case 1: user[i] ? ++c : ++b; break; | |
} | |
} | |
if( a+b+c+d !== truth.length ) return; | |
fpr = c/(a+c); fnr = b/(b+d); | |
return {'true_pos': a, 'false_neg': b, 'false_pos': c, 'true_neg': d, 'false_pos_rate': fpr, 'false_neg_rate': fnr} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment