BioEve Search: A Novel Framework to Facilitate Interactive Literature Search

Table 1

Classification approaches used: Naïve Bayes classifier (NBC), NBC + Expectation Maximization (EM), Maximum Entropy (MaxEnt), Conditional Random Fields (CRFs).

Granularity	Features	Classifier
Single label,	Bag-of-words (BOW)	NBC
Sentence level	BOW + gene names boosted
	BOW + trigger words boosted
	BOW + gene names and trigger
	words boosted
Multiple labels	BOW	NBC +
		EM
Sentence level		MaxEnt
Event trigger	BOW +	CRFs
phrase labeling	3-gram and 4-gram
	prefixes and suffixes +
	orthographic features +
	trigger phrase dictionary