private protected override IEnumerable <string> GetPerInstanceColumnsToSave(RoleMappedSchema schema)
{
Host.CheckValue(schema, nameof(schema));
Host.CheckParam(schema.Label.HasValue, nameof(schema), "Schema must contain a label column");
// The regression evaluator outputs the label and score columns.
yield return(schema.Label.Value.Name);
var scoreCol = EvaluateUtils.GetScoreColumn(Host, schema.Schema, ScoreCol, nameof(Arguments.ScoreColumn),
MetadataUtils.Const.ScoreColumnKind.Regression);
yield return(scoreCol.Name);
// Return the output columns.
yield return(RegressionPerInstanceEvaluator.L1);
yield return(RegressionPerInstanceEvaluator.L2);
// REVIEW: Identify by metadata.
int col;
if (schema.Schema.TryGetColumnIndex("FeatureContributions", out col))
{
yield return("FeatureContributions");
}
}
private IEnumerable <KeyValuePair <RoleMappedSchema.ColumnRole, string> > GetColumnRoles(
RoleMappedSchema testSchema, Schema scoredSchema)
{
switch (PredictionKind)
{
case PredictionKind.BinaryClassification:
yield return(RoleMappedSchema.CreatePair(RoleMappedSchema.ColumnRole.Label, testSchema.Label.Value.Name));
var scoreCol = EvaluateUtils.GetScoreColumn(Host, scoredSchema, null, nameof(BinaryClassifierMamlEvaluator.ArgumentsBase.ScoreColumn),
MetadataUtils.Const.ScoreColumnKind.BinaryClassification);
yield return(RoleMappedSchema.CreatePair(MetadataUtils.Const.ScoreValueKind.Score, scoreCol.Name));
// Get the optional probability column.
var probCol = EvaluateUtils.GetOptAuxScoreColumn(Host, scoredSchema, null, nameof(BinaryClassifierMamlEvaluator.Arguments.ProbabilityColumn),
scoreCol.Index, MetadataUtils.Const.ScoreValueKind.Probability, NumberType.Float.Equals);
if (probCol.HasValue)
{
yield return(RoleMappedSchema.CreatePair(MetadataUtils.Const.ScoreValueKind.Probability, probCol.Value.Name));
}
yield break;
case PredictionKind.Regression:
yield return(RoleMappedSchema.CreatePair(RoleMappedSchema.ColumnRole.Label, testSchema.Label.Value.Name));
scoreCol = EvaluateUtils.GetScoreColumn(Host, scoredSchema, null, nameof(RegressionMamlEvaluator.Arguments.ScoreColumn),
MetadataUtils.Const.ScoreColumnKind.Regression);
yield return(RoleMappedSchema.CreatePair(MetadataUtils.Const.ScoreValueKind.Score, scoreCol.Name));
yield break;
case PredictionKind.MultiClassClassification:
yield return(RoleMappedSchema.CreatePair(RoleMappedSchema.ColumnRole.Label, testSchema.Label.Value.Name));
scoreCol = EvaluateUtils.GetScoreColumn(Host, scoredSchema, null, nameof(MultiClassMamlEvaluator.Arguments.ScoreColumn),
MetadataUtils.Const.ScoreColumnKind.MultiClassClassification);
yield return(RoleMappedSchema.CreatePair(MetadataUtils.Const.ScoreValueKind.Score, scoreCol.Name));
yield break;
default:
throw Host.Except("Unrecognized prediction kind '{0}'", PredictionKind);
}
}
private protected virtual IEnumerable <KeyValuePair <RoleMappedSchema.ColumnRole, string> > GetInputColumnRolesCore(RoleMappedSchema schema)
{
// Get the score column information.
var scoreCol = EvaluateUtils.GetScoreColumn(Host, schema.Schema, ScoreCol, nameof(ArgumentsBase.ScoreColumn),
ScoreColumnKind);
yield return(RoleMappedSchema.CreatePair(MetadataUtils.Const.ScoreValueKind.Score, scoreCol.Name));
// Get the label column information.
string label = EvaluateUtils.GetColName(LabelCol, schema.Label, DefaultColumnNames.Label);
yield return(RoleMappedSchema.ColumnRole.Label.Bind(label));
string weight = EvaluateUtils.GetColName(WeightCol, schema.Weight, null);
if (!string.IsNullOrEmpty(weight))
{
yield return(RoleMappedSchema.ColumnRole.Weight.Bind(weight));
}
}
private protected override IEnumerable <string> GetPerInstanceColumnsToSave(RoleMappedSchema schema)
{
Host.CheckValue(schema, nameof(schema));
Host.CheckParam(schema.Label.HasValue, nameof(schema), "Data must contain a label column");
Host.CheckParam(schema.Group.HasValue, nameof(schema), "Data must contain a group column");
// The ranking evaluator outputs the label, group key and score columns.
yield return(schema.Group.Value.Name);
yield return(schema.Label.Value.Name);
var scoreCol = EvaluateUtils.GetScoreColumn(Host, schema.Schema, ScoreCol, nameof(Arguments.ScoreColumn),
AnnotationUtils.Const.ScoreColumnKind.Ranking);
yield return(scoreCol.Name);
// Return the output columns.
yield return(RankingPerInstanceTransform.Ndcg);
yield return(RankingPerInstanceTransform.Dcg);
yield return(RankingPerInstanceTransform.MaxDcg);
}
