public FeatureNameCollectionSchema(FeatureNameCollection collection)
{
Contracts.CheckValue(collection, nameof(collection));
_collection = collection;
_colType = new VectorType(NumberType.R4, collection.Count);
_slotNamesType = new VectorType(TextType.Instance, collection.Count);
_getSlotNames = GetSlotNames;
}
public FeatureNameCollectionBinding(FeatureNameCollection collection)
{
Contracts.CheckValue(collection, nameof(collection));
_collection = collection;
_colType = new VectorType(NumberDataViewType.Single, collection.Count);
_slotNamesType = new VectorType(TextDataViewType.Instance, collection.Count);
var metadataBuilder = new DataViewSchema.Annotations.Builder();
metadataBuilder.Add(AnnotationUtils.Kinds.SlotNames, _slotNamesType,
(ref VBuffer <ReadOnlyMemory <char> > slotNames) => { GetSlotNames(0, ref slotNames); });
var schemaBuilder = new DataViewSchema.Builder();
schemaBuilder.AddColumn(RoleMappedSchema.ColumnRole.Feature.Value, _colType, metadataBuilder.ToAnnotations());
FeatureNameCollectionSchema = schemaBuilder.ToSchema();
}