Table 3.

Table 3 StAC Cross-Validated on the BIDMC Corpus

Assertion Class	StAC
	Precision	Recall	F-Measure
Positive	0.93	0.97	0.95
Negative	0.95	0.93	0.94
Uncertain	0.70	0.56	0.63
Alter-Association	1.00	0.81	0.89

BIDMC = Beth Israel Deaconess Medical Center.