public override MultiMatrix getGradientInput(MultiMatrix inData, MultiMatrix nextGradient)
{
var gradientIn = MultiMatrix.Build.repeat(inData.Dimensions, 0);
foreach (var coords in nextGradient.AllCoords())
{
foreach (var offset in Weights.AllCoords())
{
gradientIn.addAt(coords.add(offset), nextGradient.at(coords) * Weights.at(offset));
}
}
return(gradientIn);
}
public double getSumAt(MultiMatrix inData, int[] coord)
{
var sum = 0.0;
foreach (var offset in this.weights.AllCoords())
{
var nearbyCoord = coord.add(offset);
if (inData.areValidCoords(nearbyCoord))
{
sum += inData.at(coord.add(offset)) * weights.at(offset);
}
}
return(sum);
}
}// TODO check ?
public MultiMatrix getGradientWeights(MultiMatrix inData, MultiMatrix nextGradient)
{
var gradientW = new MultiMatrix(this.Dimensions);
foreach (var coord in nextGradient.AllCoords())
{
foreach (var offset in this.weights.AllCoords())
{
var nearbyCoord = coord.add(offset);
gradientW.addAt(offset, nextGradient.at(coord) * inData.at(nearbyCoord));
}
}
return(gradientW);
}