CNN	convolution neural network	CWRU	Case Western Reverse University
SVM	support vector machine	AR	autoregressive
ARX	autoregressive with external input	PI	Proportional Integral
SVR	support vector regression	SVAL	support vector autoregressive–Laguerre
HOVSO	high-order variable structure observer	ANFIS	adaptive neural-fuzzy inference system
ANFSO	adaptive neural-fuzzy structure observer	NRM	normal condition
BLF	ball fault	IRF	inner race fault
ORF	outer race fault	AL	autoregressive Laguerre
UPI	uncertainty performance index	Proposed + CNN	combination of the SVAL algorithm and adaptive neural-fuzzy structure (proposed) + CNN
SVAL-VSO + CNN	combination of the SVAL algorithm and variable structure technique + CNN	SVAL-HVSO + CNN	combination of the SVAL algorithm and high-order variable structure technique + CNN
Proposed + SVM	combination of the SVAL algorithm and adaptive neural-fuzzy structure (proposed) + SVM	SVAL-VSO + SVM	combination of the SVAL algorithm and variable structure technique + SVM
RAW + CNN	Combination of the RAW signal + CNN	SVAL-HVSO + CNN	combination of the SVAL algorithm and high-order variable structure technique + CNN