A Novel Feature Selection Strategy for Enhanced Biomedical Event Extraction Using the Turku System

Table 6

Comparison of 𝐹-score performance in Task 1 with other systems (under primary criterion: approximate span and recursive).

	Bjorne et al. 2009 [13]	Bjorne et al. 2011 [15]	Bjorne et al. 2012 [16]	TEES1.01	Riedel et al. 2011 [14]	Ours
𝐹-score (%)	51.95	52.86	53.15	55.65	56.00	57.24