Applying Adaptive Neural Fuzzy Inference System to Improve Concrete Strength Estimation in Ultrasonic Pulse Velocity Tests

Table 4

Adaptive neuro-fuzzy inference system (ANFIS) model.

Attribution function	MAPE (%)				MAPE (%)
	One-input: number of functions				Two-input: number of functions
	[2]	[3]	[4]	[5]	[2 2]	[3 3]	[4 4]	[5 5]
Trimf	10.04	9.80	9.66	9.80	9.98	9.94	10.05	10.46
Trapmf	10.26	10.94	9.48	10.00	10.52	10.94	10.43	9.18
Gbellmf	9.73	9.89	9.46	9.37	9.68	9.89	10.40	9.56
Gaussmf	9.76	10.01	9.41	9.76	9.77	10.85	10.28	9.94
Gauss2mf	9.78	10.01	9.49	9.88	10.18	10.54	10.26	10.98
Pimf	10.48	10.50	10.50	10.50	10.73	10.66	10.31	10.49
Dsigmf	10.15	9.97	9.46	9.69	10.11	10.56	10.67	10.58
Psigmf	10.15	9.91	9.46	9.43	10.11	10.57	10.67	10.56
Trimf	10.04	9.80	9.66	9.80	9.98	9.94	10.05	10.46
Trapmf	10.26	10.94	9.48	10.00	10.52	10.94	10.43	9.18