internal IEnumerable<double?> GetFeatureValues(Feature feature, DoubleRange normalizationRange)
{
Contract.Requires(feature != null);
Contract.Requires(!normalizationRange.IsFixed);
foreach (double? value in GetFeatureValues(feature))
{
if (value.HasValue)
{
yield return OriginalValueRange.Normalize(value.Value, normalizationRange);
}
else
{
yield return null;
}
}
}
protected internal override IEnumerable<double?> GetFeatureValues(Feature feature)
{
var bytes = ((BinaryFeature)feature).Bytes;
if (bytes == null)
{
for (int idx = 0; idx < ItemCount; idx++) yield return null;
}
else
{
using (var reader = new BinaryReader(new MemoryStream(bytes)))
{
for (int idx = 0; idx < ItemCount; idx++) yield return ReadItem(reader);
}
}
}
private IEnumerable<double?> GetValues(Feature feature)
{
return GetValues(feature);
}
protected internal override IEnumerable<double?> GetOriginalValues(Feature feature)
{
return GetValues(feature);
}
protected internal override IEnumerable<double?> GetFeatureValues(Feature feature)
{
yield return ((ValueFeature)feature).Value;
}
protected internal abstract IEnumerable<double?> GetFeatureValues(Feature feature);
protected internal override IEnumerable<double?> GetOriginalValues(Feature feature)
{
yield return ((RealFeature)feature).Value;
}
