KeyValuePair <double, double[, , ]> SetBackwardErrors(double[,,] input, double[,,] t)
{
double[,,] output = GetOutput(input);
//Console.WriteLine("{0} {1}", (float)output[0, 0, 0], (float)output[0, 0, 1]);
int depth2 = output.GetLength(0);
int height2 = output.GetLength(1);
int width2 = output.GetLength(2);
double[,,] out_err = errors.Last();
loss.Error(output, t, out_err);
double[,,] diff = layers.Last().GetCachedDiff();
for (int z2 = 0; z2 < depth2; z2++)
{
for (int y2 = 0; y2 < height2; y2++)
{
for (int x2 = 0; x2 < width2; x2++)
{
//temp = t[z2, y2, x2] - output[z2, y2, x2];
out_err[z2, y2, x2] *= -diff[z2, y2, x2];
}
}
}
errors[errors.Count - 1] = out_err;
for (int i = layers.Count - 1; i >= 0; i--)
{
Layer prev = null;
if (i != 0)
{
prev = layers[i - 1];
if (prev != null)
{
errors[i - 1] = layers[i].GetError(errors[i], prev.GetCachedDiff(), prev.GetCachedOutpur());
}
else
{
double[,,] diff2 = (double[, , ])input.Clone();
diff2.ForEach(x => 1);
errors[i - 1] = layers[i].GetError(errors[i], diff2, input);
}
}
}
return(new KeyValuePair <double, double[, , ]>(loss.Metric(output, t), output));
}