Biomedical Relation Extraction: From Binary to Complex

Table 9

Performance of the biomedical event extraction systems not participating in the BioNLP shared tasks.

Category	Recall (%)	Precision (%)	-score (%)	Corpus	References
Nonpipeline	NA	NA	56.0	BioNLP’11	[87]
	NA	NA	57.4	BioNLP’11	[85]
Rule-based	38.01	52.06	43.94	BioNLP’11	[58]
	33.66	41.77	37.28	BioNLP’09	[79]
	10.12	27.17	14.75	BioNLP’11	[62]
Machine learning	51.25	64.92	57.28	BioNLP’11	[86]
	NA	NA	53.15	BioNLP’09	[82]
	NA	NA	53.30	BioNLP’11	[82]