Table 3.

The added value of individual features based on ``leave-one-out'' methodology

Setting	Threshold	Precision	Recall	F-Score	Added value
All features	0.53	84.8	86.8	85.8	-
A—Compound frequency	0.47	82.8	86.2	84.5	1.3
B—Compound section	0.40	95.5	70.0	80.8	5.0
C—Compound length	0.40	75.9	75.5	75.7	10.1
D—Surrounding characters	0.53	85.1	82.9	84.0	1.8
E—Compound section uniqueness	0.53	84.8	82.9	83.9	1.9
F—Compound without solvent	0.53	85.1	82.9	84.0	1.8
G—Compound wide usage	0.53	83.9	76.4	80.0	5.8