void ComputeDerivativeSigmoid()
{
Random rnd = new Random(DateTime.Now.Millisecond);
Perceptron.entity.Layer l = new Perceptron.entity.Layer();
l.Activation = Perceptron.entity.ActivationType.Sigmoid;
double activation = rnd.NextDouble();
double derivativeActual = Perceptron.core.Utils.ComputeDerivativeOfActivation(l, null, 0, activation);
double derivativeExpected = activation * (1 - activation);
Assert.Equal(derivativeActual, derivativeActual, 5);
}
void ComputeActivationSigmoid()
{
Random rnd = new Random(DateTime.Now.Millisecond);
Perceptron.entity.Layer l = new Perceptron.entity.Layer();
l.Activation = Perceptron.entity.ActivationType.Sigmoid;
double dotproduct = rnd.NextDouble();
double activationActual = Perceptron.core.Utils.ComputeActivation(l, null, dotproduct);
double activationExpected = 1 / (1 + Math.Exp(-dotproduct));
Assert.Equal(activationActual, activationActual, 5);
}
