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164                                                         G. Polhill

                           /       /
                           0))     0))      1,  1,    0))/    0))/
                           1,      1,       DD  DD    1,      1,
                           1,      1,         0))  0))  1,    0,
                           DD      DD       model  1,  1,  model  1,  1,  DD  DD
                           model  0))  model  0))  &  1  DD  &  1  DD  model  0))  model  0))


                           &  1,   &  1,    DD  DD    &  1,   &  1,
                           1  1,   1  1,            p)  0  0,  1  1,
                           DD  DD  DD  DD   sum(ifelse(vdata sum(ifelse(model sum(ifelse(vdata sum(ifelse(vdata  C  DD  DD  DD  DD
                           sum(ifelse(vdata sum(ifelse(model  sum(ifelse(vdata sum(ifelse(vdata  /  /  p)/(t  * sum(ifelse(vdata sum(ifelse(vdata  sum(ifelse(vdata sum(ifelse(vdata






                        code                   0))     0))  (t  *
                        R                   p<  1,  r<  1,  2
                               it                             –
                           said  Ideally  a  said  where  would  ideal  –  error  number  error  where
                           correctly  cases  the  correctly  cases  it  of  mean  the  in  I  Type  an  the  of  II  Type  phenomenon  cases


                           model  all  of  occurred.  the  all  Ideally  harmonic  1  is  it  of  predicted  fraction  of  the  of  number

                           the  fraction  phenomenon  model  of  occurred.  that  equivalent  has  a  as  data  equivalent  predicted  the
                           where  a  the  fraction  a  the  is  such  the  model  the  in  the  has  of

                           cases  as  the  where  as  phenomenon  score  scaled  case  is  the  phenomenon  doesn’t  is  rate  model  fraction

                           the  occurred  said  cases  occurred  F 1  recall,  worst  rate  where  the  a
                           is  model  the  is  the  or  measure  and  the  in  positive  cases  the  of  it  where  negative  where  as  occur  data  the
                        Description  precision  The  phenomenon  the  where  1  be  would  recall  The  phenomenon  said  data  the  1  be  F  The  precision  0  and  case  false  The  the  is  and  occurrence  cases  of  false  The  cases  the  not  does  in  does  it


                             a
                                   true               (FPR)
                             (PPV)
                     (continued)  positive  value  or sensitivity  (TPR)  score  F 1  or  rate



                     8.3   or  predictive  rate  measure  positive  fall-out  Falsenegativerate  (FNR)ormissrate
                     Table  Metric  Precision  Recall,  positive  F  False  or
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