private static ValueGetter <StringBuilder> GetGetterAsStringBuilderCore <TSrc>(ColumnType typeSrc, IRow row, int col)
{
Contracts.Assert(typeof(TSrc) == typeSrc.RawType);
var getter = row.GetGetter <TSrc>(col);
var conv = Conversions.Instance.GetStringConversion <TSrc>(typeSrc);
var src = default(TSrc);
return
((ref StringBuilder dst) =>
{
getter(ref src);
conv(in src, ref dst);
});
}
public FeatureContributionSchema(IExceptionContext ectx, string columnName, ColumnType columnType, Schema parentSchema, int featureCol)
{
Contracts.CheckValueOrNull(ectx);
Contracts.CheckValue(parentSchema, nameof(parentSchema));
_ectx = ectx;
_ectx.CheckNonEmpty(columnName, nameof(columnName));
_parentSchema = parentSchema;
_featureCol = featureCol;
_featureVectorSize = _parentSchema[_featureCol].Type.VectorSize;
_hasSlotNames = _parentSchema[_featureCol].HasSlotNames(_featureVectorSize);
_names = new string[] { columnName };
_types = new ColumnType[] { columnType };
_columnNameMap = new Dictionary <string, int>()
{
{ columnName, 0 }
};
}
internal override IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, ColumnType srcType, IRowCursor cursor) => NormalizeTransform.BinUtils.CreateBuilder(this, host, srcIndex, srcType, cursor);
public ColInfo(string name, string source, ColumnType type)
{
Name = name;
Source = source;
TypeSrc = type;
}
private static bool OutputTypeMatches(ColumnType scoreType)
{
return(scoreType.IsKnownSizeVector && scoreType.ItemType == NumberType.Float);
}
// REVIEW: It would be nice to support propagation of select metadata.
public static IDataView Create <TSrc, TDst>(IHostEnvironment env, string name, IDataView input,
string src, string dst, ColumnType typeSrc, ColumnType typeDst, ValueMapper <TSrc, TDst> mapper,
ValueGetter <VBuffer <ReadOnlyMemory <char> > > keyValueGetter = null, ValueGetter <VBuffer <ReadOnlyMemory <char> > > slotNamesGetter = null)
{
Contracts.CheckValue(env, nameof(env));
env.CheckNonEmpty(name, nameof(name));
env.CheckValue(input, nameof(input));
env.CheckNonEmpty(src, nameof(src));
env.CheckNonEmpty(dst, nameof(dst));
env.CheckValue(typeSrc, nameof(typeSrc));
env.CheckValue(typeDst, nameof(typeDst));
env.CheckValue(mapper, nameof(mapper));
env.Check(keyValueGetter == null || typeDst.ItemType.IsKey);
env.Check(slotNamesGetter == null || typeDst.IsKnownSizeVector);
if (typeSrc.RawType != typeof(TSrc))
{
throw env.ExceptParam(nameof(mapper),
"The source column type '{0}' doesn't match the input type of the mapper", typeSrc);
}
if (typeDst.RawType != typeof(TDst))
{
throw env.ExceptParam(nameof(mapper),
"The destination column type '{0}' doesn't match the output type of the mapper", typeDst);
}
bool tmp = input.Schema.TryGetColumnIndex(src, out int colSrc);
if (!tmp)
{
throw env.ExceptParam(nameof(src), "The input data doesn't have a column named '{0}'", src);
}
var typeOrig = input.Schema.GetColumnType(colSrc);
// REVIEW: Ideally this should support vector-type conversion. It currently doesn't.
bool ident;
Delegate conv;
if (typeOrig.SameSizeAndItemType(typeSrc))
{
ident = true;
conv = null;
}
else if (!Conversions.Instance.TryGetStandardConversion(typeOrig, typeSrc, out conv, out ident))
{
throw env.ExceptParam(nameof(mapper),
"The type of column '{0}', '{1}', cannot be converted to the input type of the mapper '{2}'",
src, typeOrig, typeSrc);
}
var col = new Column(src, dst);
IDataView impl;
if (ident)
{
impl = new Impl <TSrc, TDst, TDst>(env, name, input, col, typeDst, mapper, keyValueGetter: keyValueGetter, slotNamesGetter: slotNamesGetter);
}
else
{
Func <IHostEnvironment, string, IDataView, Column, ColumnType, ValueMapper <int, int>,
ValueMapper <int, int>, ValueGetter <VBuffer <ReadOnlyMemory <char> > >, ValueGetter <VBuffer <ReadOnlyMemory <char> > >,
Impl <int, int, int> > del = CreateImpl <int, int, int>;
var meth = del.GetMethodInfo().GetGenericMethodDefinition()
.MakeGenericMethod(typeOrig.RawType, typeof(TSrc), typeof(TDst));
impl = (IDataView)meth.Invoke(null, new object[] { env, name, input, col, typeDst, conv, mapper, keyValueGetter, slotNamesGetter });
}
return(new OpaqueDataView(impl));
}
public RowMapperColumnInfo(string name, ColumnType type, IRow metadata)
{
Name = name;
ColType = type;
Metadata = metadata;
}
public GetterImpl(string name, IRow meta, ColumnType type, ValueGetter <T> getter)
: base(name, meta, type)
{
Contracts.CheckValueOrNull(getter);
_getter = getter;
}
private SchemaShape.Column CheckInputsAndMakeColumn(
SchemaShape inputSchema, string name, string[] sources)
{
_host.AssertNonEmpty(sources);
var cols = new SchemaShape.Column[sources.Length];
// If any input is a var vector, so is the output.
bool varVector = false;
// If any input is not normalized, the output is not normalized.
bool isNormalized = true;
// If any input has categorical indices, so will the output.
bool hasCategoricals = false;
// If any is scalar or had slot names, then the output will have slot names.
bool hasSlotNames = false;
// We will get the item type from the first column.
ColumnType itemType = null;
for (int i = 0; i < sources.Length; ++i)
{
if (!inputSchema.TryFindColumn(sources[i], out var col))
{
throw _host.ExceptSchemaMismatch(nameof(inputSchema), "input", sources[i]);
}
if (i == 0)
{
itemType = col.ItemType;
}
// For the sake of an estimator I am going to have a hard policy of no keys.
// Appending keys makes no real sense anyway.
if (col.IsKey)
{
throw _host.Except($"Column '{sources[i]}' is key." +
$"Concatenation of keys is unsupported.");
}
if (!col.ItemType.Equals(itemType))
{
throw _host.Except($"Column '{sources[i]}' has values of {col.ItemType}" +
$"which is not the same as earlier observed type of {itemType}.");
}
varVector |= col.Kind == SchemaShape.Column.VectorKind.VariableVector;
isNormalized &= col.IsNormalized();
hasCategoricals |= HasCategoricals(col);
hasSlotNames |= col.Kind == SchemaShape.Column.VectorKind.Scalar || col.HasSlotNames();
}
var vecKind = varVector ? SchemaShape.Column.VectorKind.VariableVector :
SchemaShape.Column.VectorKind.Vector;
List <SchemaShape.Column> meta = new List <SchemaShape.Column>();
if (isNormalized)
{
meta.Add(new SchemaShape.Column(MetadataUtils.Kinds.IsNormalized, SchemaShape.Column.VectorKind.Scalar, BoolType.Instance, false));
}
if (hasCategoricals)
{
meta.Add(new SchemaShape.Column(MetadataUtils.Kinds.CategoricalSlotRanges, SchemaShape.Column.VectorKind.Vector, NumberType.I4, false));
}
if (hasSlotNames)
{
meta.Add(new SchemaShape.Column(MetadataUtils.Kinds.SlotNames, SchemaShape.Column.VectorKind.Vector, TextType.Instance, false));
}
return(new SchemaShape.Column(name, vecKind, itemType, false, new SchemaShape(meta)));
}
public ConstOneImpl(string name, IRow meta, ColumnType type, T value)
: base(name, meta, type)
{
Contracts.Assert(type.IsPrimitive);
_value = value;
}
public ConstVecImpl(string name, IRow meta, ColumnType type, VBuffer <T> value)
: base(name, meta, type)
{
_value = value;
}
public InactiveImpl(string name, IRow meta, ColumnType type)
: base(name, meta, type)
{
}
private static ValueGetter <TDst> GetGetterAsCore <TSrc, TDst>(ColumnType typeSrc, ColumnType typeDst, IRow row, int col)
{
Contracts.Assert(typeof(TSrc) == typeSrc.RawType);
Contracts.Assert(typeof(TDst) == typeDst.RawType);
var getter = row.GetGetter <TSrc>(col);
bool identity;
var conv = Conversions.Instance.GetStandardConversion <TSrc, TDst>(typeSrc, typeDst, out identity);
if (identity)
{
Contracts.Assert(typeof(TSrc) == typeof(TDst));
return((ValueGetter <TDst>)(Delegate) getter);
}
var src = default(TSrc);
return
((ref TDst dst) =>
{
getter(ref src);
conv(in src, ref dst);
});
}
public static string TestGetLabelGetter(ColumnType type)
{
return(TestGetLabelGetter(type, true));
}
private Delegate GetIsNADelegate <T>(ColumnType type)
{
return(Conversions.Instance.GetIsNAPredicate <T>(type.ItemType));
}
private static void ShowMetadataValue <T>(IndentingTextWriter itw, ISchema schema, int col, string kind, ColumnType type)
{
Contracts.AssertValue(itw);
Contracts.AssertValue(schema);
Contracts.Assert(0 <= col && col < schema.ColumnCount);
Contracts.AssertNonEmpty(kind);
Contracts.AssertValue(type);
Contracts.Assert(!type.IsVector);
Contracts.Assert(type.RawType == typeof(T));
var conv = Conversions.Instance.GetStringConversion <T>(type);
var value = default(T);
var sb = default(StringBuilder);
schema.GetMetadata(kind, col, ref value);
conv(in value, ref sb);
itw.Write(": '{0}'", sb);
}
/// <summary>
/// Given a type and metadata kind string, returns a key-value pair. This is useful when
/// implementing GetMetadataTypes(col).
/// </summary>
public static KeyValuePair <string, ColumnType> GetPair(this ColumnType type, string kind)
{
Contracts.CheckValue(type, nameof(type));
return(new KeyValuePair <string, ColumnType>(kind, type));
}
private static void ShowMetadataValueVec(IndentingTextWriter itw, ISchema schema, int col, string kind, ColumnType type)
{
Contracts.AssertValue(itw);
Contracts.AssertValue(schema);
Contracts.Assert(0 <= col && col < schema.ColumnCount);
Contracts.AssertNonEmpty(kind);
Contracts.AssertValue(type);
Contracts.Assert(type.IsVector);
if (!type.ItemType.IsStandardScalar && !type.ItemType.IsKey)
{
itw.Write(": Can't display value of this type");
return;
}
Action <IndentingTextWriter, ISchema, int, string, ColumnType> del = ShowMetadataValueVec <int>;
var meth = del.GetMethodInfo().GetGenericMethodDefinition().MakeGenericMethod(type.ItemType.RawType);
meth.Invoke(null, new object[] { itw, schema, col, kind, type });
}
private static bool OutputTypeMatches(ColumnType scoreType)
{
return(scoreType == NumberType.Float);
}
private static void ShowMetadataValueVec <T>(IndentingTextWriter itw, ISchema schema, int col, string kind, ColumnType type)
{
Contracts.AssertValue(itw);
Contracts.AssertValue(schema);
Contracts.Assert(0 <= col && col < schema.ColumnCount);
Contracts.AssertNonEmpty(kind);
Contracts.AssertValue(type);
Contracts.Assert(type.IsVector);
Contracts.Assert(type.ItemType.RawType == typeof(T));
var conv = Conversions.Instance.GetStringConversion <T>(type.ItemType);
var value = default(VBuffer <T>);
schema.GetMetadata(kind, col, ref value);
itw.Write(": Length={0}, Count={0}", value.Length, value.GetValues().Length);
using (itw.Nest())
{
var sb = default(StringBuilder);
int count = 0;
foreach (var item in value.Items())
{
if ((count % 10) == 0)
{
itw.WriteLine();
}
else
{
itw.Write(", ");
}
var val = item.Value;
conv(in val, ref sb);
itw.Write("[{0}] '{1}'", item.Key, sb);
count++;
}
}
}
protected MetadataInfo(ColumnType type)
{
Contracts.AssertValueOrNull(type);
Type = type;
}
private KeyToValueMap GetKeyMetadata <TKey, TValue>(int iinfo, ColumnType typeKey, ColumnType typeVal)
{
Host.Assert(0 <= iinfo && iinfo < Infos.Length);
Host.AssertValue(typeKey);
Host.AssertValue(typeVal);
Host.Assert(typeKey.ItemType.RawType == typeof(TKey));
Host.Assert(typeVal.ItemType.RawType == typeof(TValue));
var keyMetadata = default(VBuffer <TValue>);
Source.Schema.GetMetadata <VBuffer <TValue> >(MetadataUtils.Kinds.KeyValues, Infos[iinfo].Source, ref keyMetadata);
Host.Check(keyMetadata.Length == typeKey.ItemType.KeyCount);
VBufferUtils.Densify <TValue>(ref keyMetadata);
return(new KeyToValueMap <TKey, TValue>(this, typeKey.ItemType.AsKey, typeVal.ItemType.AsPrimitive, keyMetadata.Values, iinfo));
}
private static ColumnType GetPredColType(ColumnType scoreType, ISchemaBoundRowMapper mapper)
{
return(new KeyType(DataKind.U4, 0, scoreType.VectorSize));
}
private Delegate CreateGetterDelegateCore <TValue>(int col, ColumnType type)
{
return((Delegate)GetterDelegateCore <TValue>(col, type));
}
public GetterInfoPrimitive(string kind, ColumnType type, TValue value)
: base(kind, type)
{
Contracts.Check(type.RawType == typeof(TValue), "Incompatible types");
Value = value;
}
public SchemaImpl(IExceptionContext ectx, TreeEnsembleFeaturizerBindableMapper parent,
ColumnType treeValueColType, ColumnType leafIdColType, ColumnType pathIdColType)
{
Contracts.CheckValueOrNull(ectx);
_ectx = ectx;
_ectx.AssertValue(parent);
_ectx.AssertValue(treeValueColType);
_ectx.AssertValue(leafIdColType);
_ectx.AssertValue(pathIdColType);
_parent = parent;
_names = new string[3];
_names[TreeIdx] = OutputColumnNames.Trees;
_names[LeafIdx] = OutputColumnNames.Leaves;
_names[PathIdx] = OutputColumnNames.Paths;
_types = new ColumnType[3];
_types[TreeIdx] = treeValueColType;
_types[LeafIdx] = leafIdColType;
_types[PathIdx] = pathIdColType;
}
public static bool IsValidRangeFilterColumnType(IExceptionContext ectx, ColumnType type)
{
ectx.CheckValue(type, nameof(type));
return(type == NumberType.R4 || type == NumberType.R8 || type.KeyCount > 0);
}
/// <summary>
/// Returns the isNA predicate for the respective type.
/// </summary>
private Delegate GetIsNADelegate(ColumnType type)
{
Func <ColumnType, Delegate> func = GetIsNADelegate <int>;
return(Utils.MarshalInvoke(func, type.ItemType.RawType, type));
}
internal abstract IColumnFunctionBuilder MakeBuilder(IHost host, int srcIndex, ColumnType srcType, IRowCursor cursor);
protected ValueMap(ColumnType type)
{
Type = type;
}