Table 4.

Discrimination of serum samples from H. pylori seropositive vs seronegative individuals based on IR spectra and artificial neural networks.

No	Topology	Correct classification percentage		Error function	Activation function
					Hidden neurons	Output neurons
		Trening subset	Validation subset
1	MLP 5-5-2	98.73	96.15	Entropy	Tanh	Softmax
2	MLP 5-4-2	94.94	89.74	Entropy	Tanh	Softmax
3	MLP 4-4-2	94.94	89.74	Entropy	Tanh	Softmax
4	MLP 4-5-2	96.20	89.74	Entropy	Exponential	Softmax
5	MLP 5-3-2	94.94	88.46	Entropy	Tanh	Softmax
6	MLP 5-2-2	97.47	88.46	Entropy	Tanh	Softmax
7	MLP 4-3-2	93.67	88.46	Entropy	Tanh	Softmax
8	MLP 3-5-2	94.94	88.46	Entropy	Logistic	Softmax
9	MLP 3-4-2	94.94	88.46	SOS	Logistic	Identity
10	MLP 2-4-2	93.67	85.90	SOS	Logistic	Identity