Fuzzy inference 36 Fuzzy systems 16 Fuzzy neural networks 14 Fuzzy inference systems 6 Fuzzy rules 6 Adaptive neuro-fuzzy inference system 5 Decision making 5 Fuzzy logic 5 Mean square error 5 Membership functions 5 fuzzy inference system 5 Errors 4 Fuzzy inference system 4 Fuzzy-neural-networks 4 adaptive neuro-fuzzy inference system 4 Climate change 3 Clustering 3 Coal 3 Controllers 3 Energy utilization 3 Forecasting 3 Learning algorithms 3 Regression analysis 3 ALGORITHM 2 Adaptive neuro-fuzzy inference 2 Adaptive-network- based fuzzy inference systems 2 Benchmarking 2 Bibliometrics 2 Catchments 2 Coal consumption 2