public override void CalculateGradients(Tensor nextLayerGradients)
{
for (int x = 0; x < In.Size.X; x++)
{
for (int y = 0; y < In.Size.Y; y++)
{
Range range = MapToOutput(x, y);
for (int z = 0; z < In.Size.Z; z++)
{
float sum_error = 0;
for (int i = range.MinX; i <= range.MaxX; i++)
{
int minx = i * Stride;
for (int j = range.MinY; j <= range.MaxY; j++)
{
int miny = j * Stride;
int is_max = (In.Get(x, y, z) == Out.Get(i, j, z)) ? 1 : 0;
sum_error += is_max * nextLayerGradients.Get(i, j, z);
}
}
GradsIn.Set(x, y, z, sum_error);
}
}
}
}