Natural Jute Fibre-Reinforced Polymer Composite System for Posttensioned Beam Strengthening in Flexure

Table 6

Determination coefficient R² for different learning algorithms to predict deflection for Scheme C.

Number of hidden layers	Neurons in hidden layer	Coefficient of determination R^2
		Training data	Validating data	Testing data	All data
1	8	0.99957	0.99778	0.99954	0.99913
1	10	0.99966	0.99780	0.99958	0.99918
1	20	0.99970	0.99784	0.99960	0.99925
1	30	0.99973	0.99787	0.99962	0.99930
1	40	0.99977	0.99789	0.99964	0.99933
1	50	0.99972	0.99786	0.99961	0.99931

The bold values indicate the optimum value.