Image-Based Insider Threat Detection via Geometric Transformation

Table 4

Instanced-based results: our feature vs. other works.

Data type		Supervised				Unsupervised
		Random forest				Isolation forest				Deep autoencoder
		IPR	IDR	IAUC	IFPR	IPR	IDR	IAUC	IFPR	IPR	IDR	IAUC	IFPR
Our work		88.92	50.13	92.09	0.15	15.41	38.57	75.20	5.26	39.86	68.72	83.65	5.38
	Xd	91.08	59.28	94.76	0.17	12.86	36.09	73.84	7.32	42.76	70.82	84.71	4.86
	Xs	82.04	41.99	87.99	0.22	12.54	30.39	70.39	9.34	41.68	69.21	80.73	6.81
Work [19]		80.23	54.68	89.23	0.17	12.62	36.31	64.24	8.98	38.18	40.51	80.17	7.42
	Xd	86.01	59.32	92.36	0.17	12.04	34.30	63.63	10.96	40.74	53.42	83.74	5.31
	Xs	75.91	40.65	84.67	0.23	11.09	25.66	60.24	12.90	31.75	47.57	77.63	9.26
Work [10]		83.26	45.43	90.27	0.18	14.65	30.26	66.59	5.64	37.64	40.48	81.34	5.53
	Xd	90.23	54.15	91.46	0.18	13.48	33.54	71.67	8.37	41.25	53.76	84.26	5.29
	Xs	72.24	42.36	85.26	0.24	12.06	25.42	70.84	9.68	38.46	41.45	79.42	8.84