private void ProcessRowSecondPass()
{
AssertValid(assertGetters: true);
_featGetter(ref _features);
_scoreGetter(ref _scores);
Host.Check(_scores.Length == _scoresArr.Length);
if (VBufferUtils.HasNaNs(ref _scores) || VBufferUtils.HasNonFinite(ref _scores))
{
return;
}
_scores.CopyTo(_scoresArr);
int j = 0;
foreach (var index in Enumerable.Range(0, _scoresArr.Length).OrderBy(i => _scoresArr[i]))
{
_indicesArr[j++] = index;
}
UnweightedCounters.UpdateSecondPass(ref _features, _indicesArr);
if (WeightedCounters != null)
{
WeightedCounters.UpdateSecondPass(ref _features, _indicesArr);
}
}
private void ProcessRowFirstPass()
{
AssertValid(assertGetters: true);
Single label = 0;
_labelGetter(ref label);
if (Single.IsNaN(label))
{
NumUnlabeledInstances++;
label = 0;
}
var intLabel = (int)label;
if (intLabel != label || intLabel < 0)
{
throw Host.Except("Invalid label: {0}", label);
}
_scoreGetter(ref _scores);
Host.Check(_scores.Length == _scoresArr.Length);
if (VBufferUtils.HasNaNs(ref _scores) || VBufferUtils.HasNonFinite(ref _scores))
{
NumBadScores++;
return;
}
_scores.CopyTo(_scoresArr);
Single weight = 1;
if (_weightGetter != null)
{
_weightGetter(ref weight);
if (!FloatUtils.IsFinite(weight))
{
NumBadWeights++;
weight = 1;
}
}
int j = 0;
foreach (var index in Enumerable.Range(0, _scoresArr.Length).OrderBy(i => _scoresArr[i]))
{
_indicesArr[j++] = index;
}
UnweightedCounters.UpdateFirstPass(intLabel, _scoresArr, 1, _indicesArr);
if (WeightedCounters != null)
{
WeightedCounters.UpdateFirstPass(intLabel, _scoresArr, weight, _indicesArr);
}
if (_clusterCentroids != null)
{
_featGetter(ref _features);
VectorUtils.Add(ref _features, ref _clusterCentroids[_indicesArr[0]]);
}
}