GSPSO-LRF-ELM: Grid Search and Particle Swarm Optimization-Based Local Receptive Field-Enabled Extreme Learning Machine for Surface Defects Detection and Classification on the Magnetic Tiles

Table 2

Training and testing data categories and quantities used in the experiment.

Data category	Defect image					Defect-free image	Total
	Break	Crack	Fray	Uneven	Blowhole	Free
Training	60	40	20	70	80	270	540
Testing	25	17	12	33	34	121	242