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 (L_t ),
2) all those that are matched (M or W_M ),
3) those that are matched above threshold (M_t ), and
4) those that are unmatched (W_U ) above threshold (U_t ).

recall = P ( Lt | M ) = Mt ÷ M	(4.10)

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