public void should_simulate_OR_gate(float[] input, int output)
{
// Arrange
_sut.SetWeights(TestWeights.OR);
// Act
var activation = _sut.FeedForwards(input);
var actualOutput = (int)Math.Round(ActivationFn.Sigmoid(activation), 0);
// Assert
Assert.That(actualOutput, Is.EqualTo(output));
}
public void should_simulate_XNOR_gate(float[] input, int output)
{
// Act
float[] activation;
_sut.SetWeights(TestWeights.AND);
activation = _sut.FeedForwards(input);
var a1 = (int)Math.Round(ActivationFn.Sigmoid(activation[0]), 0);
_sut.SetWeights(TestWeights.NOR);
activation = _sut.FeedForwards(input);
var a2 = (int)Math.Round(ActivationFn.Sigmoid(activation[0]), 0);
_sut.SetWeights(TestWeights.OR);
activation = _sut.FeedForwards(a1, a2);
var actualOutput = (int)Math.Round(ActivationFn.Sigmoid(activation[0]), 0);
// Assert
Assert.That(actualOutput, Is.EqualTo(output));
}
public void test_known_sigmoid_values(float z, float value)
{
var r = ActivationFn.Sigmoid(z);
Assert.That(r, Is.EqualTo(value));
}