public double[] Gradient(double[] threshold)
{
double[] gradient = new double[threshold.Length];
for (int i = 0; i < gradient.Length; i++)
{
gradient[i] = function.Gradient(threshold[i]);
}
return(gradient);
}
public Matrix Gradient(Matrix x)
{
if (!x.IsVector())
{
throw new Exception();
}
Matrix ret = new Matrix(x.GetRowCount(), x.GetColumnCount());
for (int i = 0; i < ret.GetRowCount(); i++)
{
ret[i, 0] = function.Gradient(x[i, 0]);
}
return(ret);
}
public override NDArray <Type> Backward(NDArray <Type> accumGrad)
{
return(accumGrad * activation.Gradient(layerInput));
}
internal double Gradient(double x)
{
return(function.Gradient(x));
}