private void CheckInputColumnTypes(ISchema schema, out ColumnType labelType, out ColumnType scoreType,
out ColumnMetadataInfo labelMetadata, out ColumnMetadataInfo scoreMetadata)
{
Host.AssertNonEmpty(ScoreCol);
Host.AssertNonEmpty(LabelCol);
var t = schema.GetColumnType(LabelIndex);
if (!t.IsKnownSizeVector || (t.ItemType != NumberType.R4 && t.ItemType != NumberType.R8))
{
throw Host.Except("Label column '{0}' has type '{1}' but must be a known-size vector of R4 or R8", LabelCol, t);
}
labelType = new VectorType(t.ItemType.AsPrimitive, t.VectorSize);
var slotNamesType = new VectorType(TextType.Instance, t.VectorSize);
labelMetadata = new ColumnMetadataInfo(LabelCol);
labelMetadata.Add(MetadataUtils.Kinds.SlotNames, new MetadataInfo <VBuffer <DvText> >(slotNamesType,
CreateSlotNamesGetter(schema, LabelIndex, labelType.VectorSize, "True")));
t = schema.GetColumnType(ScoreIndex);
if (t.VectorSize == 0 || t.ItemType != NumberType.Float)
{
throw Host.Except("Score column '{0}' has type '{1}' but must be a known length vector of type R4", ScoreCol, t);
}
scoreType = new VectorType(t.ItemType.AsPrimitive, t.VectorSize);
scoreMetadata = new ColumnMetadataInfo(ScoreCol);
scoreMetadata.Add(MetadataUtils.Kinds.SlotNames, new MetadataInfo <VBuffer <DvText> >(slotNamesType,
CreateSlotNamesGetter(schema, ScoreIndex, scoreType.VectorSize, "Predicted")));
scoreMetadata.Add(MetadataUtils.Kinds.ScoreColumnKind, new MetadataInfo <DvText>(TextType.Instance, GetScoreColumnKind));
scoreMetadata.Add(MetadataUtils.Kinds.ScoreValueKind, new MetadataInfo <DvText>(TextType.Instance, GetScoreValueKind));
scoreMetadata.Add(MetadataUtils.Kinds.ScoreColumnSetId,
new MetadataInfo <uint>(MetadataUtils.ScoreColumnSetIdType, GetScoreColumnSetId(schema)));
}
public override RowMapperColumnInfo[] GetOutputColumns()
{
var infos = new RowMapperColumnInfo[2];
var slotNamesType = new VectorType(TextType.Instance, _scoreSize);
var l1Metadata = new ColumnMetadataInfo(L1);
l1Metadata.Add(MetadataUtils.Kinds.SlotNames, new MetadataInfo <VBuffer <DvText> >(slotNamesType, CreateSlotNamesGetter(L1)));
var l2Metadata = new ColumnMetadataInfo(L2);
l2Metadata.Add(MetadataUtils.Kinds.SlotNames, new MetadataInfo <VBuffer <DvText> >(slotNamesType, CreateSlotNamesGetter(L2)));
infos[L1Col] = new RowMapperColumnInfo(L1, _outputType, l1Metadata);
infos[L2Col] = new RowMapperColumnInfo(L2, _outputType, l2Metadata);
return(infos);
}
public override RowMapperColumnInfo[] GetOutputColumns()
{
var infos = new RowMapperColumnInfo[3];
infos[ClusterIdCol] = new RowMapperColumnInfo(ClusterId, _types[ClusterIdCol], null);
var slotNamesType = new VectorType(TextType.Instance, _numClusters);
var sortedClusters = new ColumnMetadataInfo(SortedClusters);
sortedClusters.Add(MetadataUtils.Kinds.SlotNames, new MetadataInfo <VBuffer <DvText> >(slotNamesType,
CreateSlotNamesGetter(_numClusters, "Cluster")));
var sortedClusterScores = new ColumnMetadataInfo(SortedClusterScores);
sortedClusterScores.Add(MetadataUtils.Kinds.SlotNames, new MetadataInfo <VBuffer <DvText> >(slotNamesType,
CreateSlotNamesGetter(_numClusters, "Score")));
infos[SortedClusterCol] = new RowMapperColumnInfo(SortedClusters, _types[SortedClusterCol], sortedClusters);
infos[SortedClusterScoreCol] = new RowMapperColumnInfo(SortedClusterScores,
_types[SortedClusterScoreCol], sortedClusterScores);
return(infos);
}
public RowMapperColumnInfo(string name, ColumnType type, ColumnMetadataInfo metadata)
{
Name = name;
ColType = type;
Metadata = metadata;
}
