public static void Backward(this NdArray <Real> ndArray)
{
if (ndArray.ParentFunc != null)
{
if (ndArray.Grad == null)
{
ndArray.Grad = new Real[ndArray.Length * ndArray.BatchCount];
for (int i = 0; i < ndArray.Grad.Length; i++)
{
ndArray.Grad[i] = 1;
}
}
NdArray.Backward(ndArray);
}
}
public void Backward()
{
if (this.ParentFunc != null)
{
if (this.Grad == null)
{
this.Grad = new Real[this.Length * this.BatchCount];
for (int i = 0; i < this.Grad.Length; i++)
{
Grad[i] = 1;
}
}
NdArray.Backward(this);
}
}
public static void Backward(NdArray y)
{
if (y.ParentFunc != null)
{
List <NdArray[]> prevInputs = y.ParentFunc.PrevInputs;
NdArray[] xs = prevInputs[prevInputs.Count - 1];
y.ParentFunc.Backward(y);
for (int i = 0; i < xs.Length; i++)
{
if (xs[i].UseCount == 0)
{
NdArray.Backward(xs[i]);
}
}
}
}
//Backward
public override void Backward(params NdArray[] ys)
{
NdArray.Backward(ys[0]);
}
//Backward
public void BackwardFD(params NdArray <T>[] ys)
{
NdArray.Backward(ys[0]);
}