Table 1.

Comparative evaluation on GENIA-MK and BioNLP-ST corpora

Corpus	System	Precision	Recall	F-score
GENIA-MK	ML only	0.79	0.67	0.72
	Rules only	0.81	0.52	0.63
	ML + Rules	0.76	0.77	0.77
	ML + Rule features	0.94	0.83	0.88
BioNLP-ST	ML only	0.82	0.64	0.73
	Rules only	0.42	1.0	0.59
	ML + Rules	0.35	0.77	0.48
	ML + Rule features	0.87	0.68	0.76

Values in bold indicate best performance obtained for each corpus.