Hybrid Feature Extraction of Pipeline Microstates Based on Φ-OTDR Sensing System

Table 3

Recognition of four microstates with different features.

Algorithms	Features
	PAR and STI-ZCR (%)	PAR and FF (%)	STI-ZCR and FF (%)	PAR, STI-ZCR, and FF (%)
C5.0	55.24	48.92	53.15	59.68
SVM	61.47	58.32	62.75	71.55
Random forest	69.23	60.78	66.22	83.51