Multivariable Regression and Adaptive Neurofuzzy Inference System Predictions of Ash Fusion Temperatures Using Ash Chemical Composition of US Coals

Table 5

Comparison of ANFIS and nonlinear regression prediction of AFTs.

	IDT			ST			FT
	𝑅^2	S.D.	Re < 120°F (%)	𝑅^2	S.D.	Re < 120°F (%)	𝑅^2	S.D.	Re < 120°F (%)
Nonlinear regression	0.89	93.27	83.26	0.917	76.792	89.51	0.94	56.118	98.46
ANFIS	0.972	45.234	98.84	0.98	36.92	100	0.99	23.236	100