private void ComputeBiasGradient(double[,,] gradients)
{
for (int i = 0; i < gradients.GetLength(0); i++)
{
_biasOptimizers[i].SetGradient(gradients.GetChannel(i).Cast <double>().Sum());
}
}
private void ComputeFilterGradients(double[,,] gradients)
{
_weightOptimizers
.AsParallel()
.Select((q, i) => new { Kernel = q, Index = i })
.ForAll(q =>
{
var dEdO = gradients.GetChannel(q.Index);
for (int j = 0; j < _cache.GetLength(0); j++)
{
var dedf = MatrixHelper.Convolution(_cache.GetChannel(j), dEdO);
q.Kernel
.GetChannel(j)
.ForEach((w, ii, jj) => w.SetGradient(dedf[ii, jj]));
}
});
}
