Table 7.

F1-score values of the RF algorithm obtained with different parameters.

		Entropy-50	Entropy-100	Entropy-500	Entropy-1000	Gini-50	Gini-100	Gini-500	Gini-1000
All	TF-IDF	0.84	0.84	0.85	0.85	0.84	0.85	0.85	0.85
	W2v	0.79	0.8	0.8	0.81	0.78	0.79	0.8	0.81
Topic-1	TF-IDF	0.89	0.89	0.90	0.9	0.88	0.89	0.9	0.89
	W2v	0.8	0.81	0.83	0.83	0.8	0.82	0.83	0.84
Topic-2	TF-IDF	0.78	0.78	0.77	0.78	0.77	0.77	0.79	0.78
	W2v	0.76	0.77	0.77	0.77	0.75	0.76	0.76	0.77
Topic-3	TF-IDF	0.8	0.81	0.82	0.82	0.8	0.8	0.81	0.81
	W2v	0.83	0.83	0.84	0.84	0.83	0.83	0.84	0.84