Table 3.

Ablation study of ACAFS stages on CSE-CIC-IDS2018 using the Two-Stage CNN.

Feature selection	No. of features	Accuracy	Precision	Recall	F1-Score	FPR	Web_Recall	Inf_Recall
Global MI only	31	97.42	97.10	97.42	96.88	1.84	91.37	94.85
Stage 1 only	40	98.76	98.81	98.76	98.63	0.94	96.85	97.94
Full ACAFS	22	99.39	99.43	99.39	99.40	0.09	98.59	98.69