Surrounding Object Material Detection and Identification Method for Robots Based on Ultrasonic Echo Signals

Table 5

Comparison table between the method in this paper and the methods in the existing literature.

Reference	Method	Accuracy (%)
Present study	SVM	97.3
	KNN	91.9
	Decision tree	94.6
Bystrov et al. [19, 20]	KNN	94.3
	K-means	91
González et al. [21]	Peniel	100