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

Table 2

Top 10 best classifiers with corresponding feature classes in combination experiment.

Rank	𝐹-score (%)	Trigger feature combination with fixed trigger feature	𝐹-score (%)	Edge feature combination with fixed edge feature
1st	51.34	1&2&3&4&5	52.16	1&2&4&5&6&7&8
2nd	51.21	1&2&3&4&5&6	51.81	1&2&4&5&6&8
3rd	50.71	1&2&4&5	51.29	1&2&5&6&7&8
4th	50.19	1&2&3&4&6	51.18	1&2&5&6&8
5th	49.9	1&2&4&5&6	50.33	1&2&4&6&7&8
6th	49.74	1&3&4&5	50.23	1&2&4&6&8
7th	49.44	1&4&5	49.26	2&4&5&6&8
8th	49.16	1&2&3&4	49.02	1&2&4&5&6
9th	48.82	1&2&4&6	48.32	2&4&5&6&7&8
10th	47.82	1&2&4	47.42	2&5&6&8