Table 5.

Comparison of the proposed FFB3 model with existing work [20].

Number of	Methods	Performance metrics (%)
classes		Accuracy	Sensitivity	Specificity	Precision	F1_score
2 classes	Existing work	98.08	95.13	95.13	98.03	96.51
	Proposed FFB3	99.52	98.80	98.80	99.70	99.24
3 classes	Existing work	87.02	85.35	92.18	89.96	87.37
	Proposed FFB3	87.64	88.13	92.59	90.87	89.39