Table 3.

Computational time (seconds)

Phase	Text Type	Language model
		TFIDF	LDA	DEEP
Training	Titles	5.8*10−5	1.0*10−3	4.4*10−1
	Abstracts	3.3*10−4	2.9*10−3	9.0*10−1
	Function Dsc.	6.3*10−4	1.5*10−2	1.2
Feature generation	Titles	7.8*10−4	3.3*10−4	1.8*10−4
	Abstracts	3.2*10−3	6.6*10−4	2.4*10−4
	Function Dsc.	2.2*10−3	1.0*10−3	2.0*10−4
Classification	Titles	5.1*10−2	3.8*10−3	9.2*10−3
	Abstracts	1.2*10−1	4.0*10−3	1.3*10−2
	Function Dsc.	7.0*10−2	5.3*10−3	6.1*10−3