public double [ /*actual*/ ] [ /*predicted*/ ] buildCM ( int idx ) { // \ predicted: 0 1 // actual 0: TN FP // 1: FN TP return new double [ ] [ ] { { tn ( idx ) , fp ( idx ) } , { fn ( idx ) , tp ( idx ) } } ; }
Build a CM for a threshold index . - typed as doubles because of double observation weights