Image-Based Insider Threat Detection via Geometric Transformation

Table 5

Transformation selection results.

Model	Transformation selection setup	R4.2 dataset
		AUROC (instance)			AUROC (user)
			Xd	Xs		Xd	Xs
Transform36	None (original transformation set)	85.34	87.26	80.69	89.76	90.69	88.03
Transform63	Add nongeometric transformations	85.23	86.94	79.48	89.01	89.34	87.26
Transform18	Optimization selection over Transform63	86.31	88.23	81.47	90.15	92.13	89.71