protected override Delegate GetPredictionGetter(IRow input, int colSrc)
{
Contracts.AssertValue(input);
Contracts.Assert(0 <= colSrc && colSrc < input.Schema.ColumnCount);
var typeSrc = input.Schema.GetColumnType(colSrc);
Contracts.Assert(typeSrc.IsVector && typeSrc.ItemType == NumberType.Float);
Contracts.Assert(ValueMapper == null ||
typeSrc.VectorSize == ValueMapper.InputType.VectorSize || ValueMapper.InputType.VectorSize == 0);
Contracts.Assert(Utils.Size(_quantiles) > 0);
var featureGetter = input.GetGetter <VBuffer <Float> >(colSrc);
var featureCount = ValueMapper != null ? ValueMapper.InputType.VectorSize : 0;
var quantiles = new Float[_quantiles.Length];
for (int i = 0; i < quantiles.Length; i++)
{
quantiles[i] = (Float)_quantiles[i];
}
var map = _qpred.GetMapper(quantiles);
var features = default(VBuffer <Float>);
ValueGetter <VBuffer <Float> > del =
(ref VBuffer <Float> value) =>
{
featureGetter(ref features);
Contracts.Check(features.Length == featureCount || featureCount == 0);
map(in features, ref value);
};
protected override Delegate GetPredictionGetter(DataViewRow input, int colSrc)
{
Contracts.AssertValue(input);
Contracts.Assert(0 <= colSrc && colSrc < input.Schema.Count);
var column = input.Schema[colSrc];
var typeSrc = column.Type as VectorType;
Contracts.Assert(typeSrc != null && typeSrc.ItemType == NumberDataViewType.Single);
Contracts.Assert(ValueMapper == null ||
typeSrc.Size == ValueMapper.InputType.GetVectorSize() || ValueMapper.InputType.GetVectorSize() == 0);
Contracts.Assert(Utils.Size(_quantiles) > 0);
var featureGetter = input.GetGetter <VBuffer <float> >(column);
var featureCount = ValueMapper != null?ValueMapper.InputType.GetVectorSize() : 0;
var quantiles = new float[_quantiles.Length];
for (int i = 0; i < quantiles.Length; i++)
{
quantiles[i] = (float)_quantiles[i];
}
var map = _qpred.GetMapper(quantiles);
var features = default(VBuffer <float>);
ValueGetter <VBuffer <float> > del =
(ref VBuffer <float> value) =>
{
featureGetter(ref features);
Contracts.Check(features.Length == featureCount || featureCount == 0);
map(in features, ref value);
};