public override void Backward(Tensor outputgrad)
{
if (Act != null)
{
Act.Backward(outputgrad);
outputgrad = Act.Input.Grad;
}
Input.Grad = K.Dot(outputgrad, base["w"].Data.Transpose());
this["w"].Grad = K.Dot(Input.Data.Transpose(), outputgrad);
if (UseBias)
{
this["b"].Grad = K.Sum(outputgrad, 0);
}
}