public void BipolarSigmoidPrimeTest()
{
var a = new Matrix(2, 2);
a.InRandomize();
var b = a.Duplicate();
a = new BipolarSigmoid().Backward(a);
b.InMap((x) => 0.5 * (1 + (-1 + 2 / (1 + Math.Exp(-x)))) * (1 - (-1 + 2 / (1 + Math.Exp(-x)))));
Assert.IsTrue(Math.Abs(a.FrobeniusNorm() - b.FrobeniusNorm()) < 0.1,
new BipolarSigmoid().Type().ToString() + " Derivative.");
}
public void BipolarSigmoidTest()
{
var a = new Matrix(2, 2);
a.InRandomize();
var b = a.Duplicate();
a = new BipolarSigmoid().Forward(a);
b.InMap((x) => - 1 + 2 / (1 + Math.Exp(-x)));
Assert.IsTrue(Math.Abs(a.FrobeniusNorm() - b.FrobeniusNorm()) < 0.1,
new BipolarSigmoid().Type().ToString() + " Activation.");
}