An Optimized Computational Framework for Isolation Forest

Table 2

Statistics of eight datasets.

Date sets	# of records	# of attributes	The ratio of anomaly data
Breast	198	33	Malignant (23.7%)
Ionosphere	351	33	Bad (35.8%)
Pima-diabetes	768	8	Pos (34.9%)
Breast-diagnostic	569	30	Malignant (37.3%)
CreditCardDefault	30000	23	yes (22.1%)
PenDigits	9868	16	yes (2%)
UnionPay	3074	95	Fraud merchants (11.5%)
Kddcup99	60839	80	Abnormal (0.4%)