Sensors Anomaly Detection of Industrial Internet of Things Based on Isolated Forest Algorithm and Data Compression

Table 2

Comparison of detection results of three algorithms.

Algorithm category	Box diagram	K-means	iForest
Accuracy	99.98%, 96.95%	99.95%, 96.08%	100%, 99.52%
Precision	99.98%, 96.92%	99.99%, 99.3%	100%, 99.78%
Recall	100%, 99.25%	99.95%, 96.52%	100%, 99.72%
Execution time	15.33 s, 3.98 s	10.87 s, 2.85 s	14.21 s, 3.04 s