Section 4-2 WEIGHTING EFFICIENCY

Weighting recall is the probability that a matched weight will be above threshold and weighting precision is the probability that a particular weight above threshold is matched. We are relating four classes of weights:

1) all those that are accepted above threshold, i.e., linked (Lt ),
2) all those that are matched (M or WM ),
3) those that are matched above threshold (Mt ), and
4) those that are unmatched (WU ) above threshold (Ut ).
recall = P ( Lt | M ) = Mt ÷ M(4.10)

precision = P ( M | Lt ) = Mt ÷ ( Mt + Ut )(4.11)