private void AddMetadata(int iinfo, DataViewSchema.Annotations.Builder builder)
{
builder.Add(InputSchema[_parent.ColumnPairs[iinfo].inputColumnName].Annotations, name => name == AnnotationUtils.Kinds.SlotNames);
ValueGetter <VBuffer <ReadOnlyMemory <char> > > getter =
(ref VBuffer <ReadOnlyMemory <char> > dst) =>
{
GetKeyValues(iinfo, ref dst);
};
builder.AddKeyValues(CharsCount, TextDataViewType.Instance, getter);
}
protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
var result = new DataViewSchema.DetachedColumn[_parent.ColumnPairs.Length];
for (int i = 0; i < _parent.ColumnPairs.Length; i++)
{
var builder = new DataViewSchema.Annotations.Builder();
AddMetadata(i, builder);
result[i] = new DataViewSchema.DetachedColumn(_parent.ColumnPairs[i].outputColumnName, _type, builder.ToAnnotations());
}
return(result);
}
protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
var result = new DataViewSchema.DetachedColumn[_parent.ColumnPairs.Length];
for (int i = 0; i < _parent.ColumnPairs.Length; i++)
{
var builder = new DataViewSchema.Annotations.Builder();
builder.Add(InputSchema[ColMapNewToOld[i]].Annotations, x => x == AnnotationUtils.Kinds.KeyValues || x == AnnotationUtils.Kinds.IsNormalized);
result[i] = new DataViewSchema.DetachedColumn(_parent.ColumnPairs[i].outputColumnName, _types[i], builder.ToAnnotations());
}
return(result);
}
protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
var result = new DataViewSchema.DetachedColumn[_parent.ColumnPairs.Length];
for (int i = 0; i < _parent.ColumnPairs.Length; i++)
{
var meta = new DataViewSchema.Annotations.Builder();
meta.Add(InputSchema[ColMapNewToOld[i]].Annotations, name => name == AnnotationUtils.Kinds.SlotNames);
result[i] = new DataViewSchema.DetachedColumn(_parent.ColumnPairs[i].outputColumnName, _types[i], meta.ToAnnotations());
}
return(result);
}
public UngroupBinding(IExceptionContext ectx, DataViewSchema inputSchema, UngroupMode mode, string[] pivotColumns)
{
Contracts.AssertValueOrNull(ectx);
_ectx = ectx;
_ectx.AssertValue(inputSchema);
_ectx.AssertNonEmpty(pivotColumns);
_inputSchema = inputSchema; // This also makes InputColumnCount valid.
Mode = mode;
Bind(_ectx, inputSchema, pivotColumns, out _infos);
_pivotIndex = Utils.CreateArray(InputColumnCount, -1);
for (int i = 0; i < _infos.Length; i++)
{
var info = _infos[i];
_ectx.Assert(_pivotIndex[info.Index] == -1);
_pivotIndex[info.Index] = i;
}
var schemaBuilder = new DataViewSchema.Builder();
// Iterate through input columns. Input columns which are not pivot columns will be copied to output schema with the same column index unchanged.
// Input columns which are pivot columns would also be copied but with different data types and different metadata.
for (int i = 0; i < InputColumnCount; ++i)
{
if (_pivotIndex[i] < 0)
{
// i-th input column is not a pivot column. Let's do a naive copy.
schemaBuilder.AddColumn(inputSchema[i].Name, inputSchema[i].Type, inputSchema[i].Annotations);
}
else
{
// i-th input column is a pivot column. Let's calculate proper type and metadata for it.
var metadataBuilder = new DataViewSchema.Annotations.Builder();
metadataBuilder.Add(inputSchema[i].Annotations, metadataName => ShouldPreserveMetadata(metadataName));
// To explain the output type of pivot columns, let's consider a row
// Age UserID
// 18 {"Amy", "Willy"}
// where "Age" and "UserID" are column names and 18/{"Amy", "Willy"} is "Age"/"UserID" column in this example row.
// If the only pivot column is "UserID", the ungroup may produce
// Age UserID
// 18 "Amy"
// 18 "Willy"
// One can see that "UserID" column (in output data) has a type identical to the element's type of the "UserID" column in input data.
schemaBuilder.AddColumn(inputSchema[i].Name, inputSchema[i].Type.GetItemType(), metadataBuilder.ToAnnotations());
}
}
OutputSchema = schemaBuilder.ToSchema();
}
public RowMapper(IHostEnvironment env, BindableMapper parent, RoleMappedSchema schema)
{
Contracts.AssertValue(env);
_env = env;
_env.AssertValue(schema);
_env.AssertValue(parent);
_env.Assert(schema.Feature.HasValue);
_parent = parent;
InputRoleMappedSchema = schema;
var genericMapper = parent.GenericMapper.Bind(_env, schema);
_genericRowMapper = genericMapper as ISchemaBoundRowMapper;
var featureSize = FeatureColumn.Type.GetVectorSize();
if (parent.Stringify)
{
var builder = new DataViewSchema.Builder();
builder.AddColumn(DefaultColumnNames.FeatureContributions, TextDataViewType.Instance, null);
_outputSchema = builder.ToSchema();
if (FeatureColumn.HasSlotNames(featureSize))
{
FeatureColumn.Annotations.GetValue(AnnotationUtils.Kinds.SlotNames, ref _slotNames);
}
else
{
_slotNames = VBufferUtils.CreateEmpty <ReadOnlyMemory <char> >(featureSize);
}
}
else
{
var metadataBuilder = new DataViewSchema.Annotations.Builder();
if (InputSchema[FeatureColumn.Index].HasSlotNames(featureSize))
{
metadataBuilder.AddSlotNames(featureSize, (ref VBuffer <ReadOnlyMemory <char> > value) =>
FeatureColumn.Annotations.GetValue(AnnotationUtils.Kinds.SlotNames, ref value));
}
var schemaBuilder = new DataViewSchema.Builder();
var featureContributionType = new VectorType(NumberDataViewType.Single, FeatureColumn.Type as VectorType);
schemaBuilder.AddColumn(DefaultColumnNames.FeatureContributions, featureContributionType, metadataBuilder.ToAnnotations());
_outputSchema = schemaBuilder.ToSchema();
}
_outputGenericSchema = _genericRowMapper.OutputSchema;
OutputSchema = new ZipBinding(new DataViewSchema[] { _outputGenericSchema, _outputSchema, }).OutputSchema;
}
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();
}
protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
var stdSuffix = ".output";
var info = new DataViewSchema.DetachedColumn[_parent.Outputs.Length];
for (int i = 0; i < _parent.Outputs.Length; i++)
{
var onnxOutputName = _parent.Outputs[i];
var columnName = onnxOutputName.EndsWith(stdSuffix) ? onnxOutputName.Replace(stdSuffix, "") : onnxOutputName;
var builder = new DataViewSchema.Annotations.Builder();
AddSlotNames(columnName, builder);
info[i] = new DataViewSchema.DetachedColumn(columnName, _parent.OutputTypes[i], builder.ToAnnotations());
}
return(info);
}
/// <summary>
/// Manufacture an instance of <see cref="DataViewSchema"/> out of any <see cref="ISchema"/>.
/// </summary>
public static DataViewSchema Create(ISchema inputSchema)
{
Contracts.CheckValue(inputSchema, nameof(inputSchema));
var builder = new DataViewSchema.Builder();
for (int i = 0; i < inputSchema.ColumnCount; i++)
{
var meta = new DataViewSchema.Annotations.Builder();
foreach (var kvp in inputSchema.GetMetadataTypes(i))
{
var getter = Utils.MarshalInvoke(GetMetadataGetterDelegate <int>, kvp.Value.RawType, inputSchema, i, kvp.Key);
meta.Add(kvp.Key, kvp.Value, getter);
}
builder.AddColumn(inputSchema.GetColumnName(i), inputSchema.GetColumnType(i), meta.ToAnnotations());
}
return(builder.ToSchema());
}
private static DataViewSchema CreateSchema(ColumnBindingsBase inputBindings)
{
Contracts.CheckValue(inputBindings, nameof(inputBindings));
var builder = new DataViewSchema.Builder();
for (int i = 0; i < inputBindings.ColumnCount; i++)
{
var meta = new DataViewSchema.Annotations.Builder();
foreach (var kvp in inputBindings.GetAnnotationTypes(i))
{
var getter = Utils.MarshalInvoke(GetAnnotationGetterDelegate <int>, kvp.Value.RawType, inputBindings, i, kvp.Key);
meta.Add(kvp.Key, kvp.Value, getter);
}
builder.AddColumn(inputBindings.GetColumnName(i), inputBindings.GetColumnType(i), meta.ToAnnotations());
}
return(builder.ToSchema());
}
/// <summary>
/// Return a <see cref="DataViewSchema"/> which contains a single score column.
/// </summary>
/// <param name="scoreType">The type of the score column.</param>
/// <param name="scoreColumnKindValue">The kind of the score column. It's the value of <see cref="AnnotationUtils.Kinds.ScoreColumnKind"/> in the score column's metadata.</param>
/// <param name="scoreColumnName">The score column's name in the generated <see cref="DataViewSchema"/>.</param>
/// <returns><see cref="DataViewSchema"/> which contains only one column.</returns>
public static DataViewSchema Create(DataViewType scoreType, string scoreColumnKindValue, string scoreColumnName = AnnotationUtils.Const.ScoreValueKind.Score)
{
Contracts.CheckValue(scoreType, nameof(scoreType));
Contracts.CheckNonEmpty(scoreColumnKindValue, nameof(scoreColumnKindValue));
// Two metadata fields. One can set up by caller of this function while the other one is a constant.
var metadataBuilder = new DataViewSchema.Annotations.Builder();
metadataBuilder.Add(AnnotationUtils.Kinds.ScoreColumnKind, TextDataViewType.Instance,
(ref ReadOnlyMemory <char> value) => { value = scoreColumnKindValue.AsMemory(); });
metadataBuilder.Add(AnnotationUtils.Kinds.ScoreValueKind, TextDataViewType.Instance,
(ref ReadOnlyMemory <char> value) => { value = AnnotationUtils.Const.ScoreValueKind.Score.AsMemory(); });
// Build a schema consisting of a single column.
var schemaBuilder = new DataViewSchema.Builder();
schemaBuilder.AddColumn(scoreColumnName, scoreType, metadataBuilder.ToAnnotations());
return(schemaBuilder.ToSchema());
}
private protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
var infos = new DataViewSchema.DetachedColumn[3];
infos[ClusterIdCol] = new DataViewSchema.DetachedColumn(ClusterId, _types[ClusterIdCol], null);
var slotNamesType = new VectorType(TextDataViewType.Instance, _numClusters);
var sortedClusters = new DataViewSchema.Annotations.Builder();
int vectorSize = slotNamesType.GetVectorSize();
sortedClusters.AddSlotNames(vectorSize, CreateSlotNamesGetter(_numClusters, "Cluster"));
var builder = new DataViewSchema.Annotations.Builder();
builder.AddSlotNames(vectorSize, CreateSlotNamesGetter(_numClusters, "Score"));
infos[SortedClusterCol] = new DataViewSchema.DetachedColumn(SortedClusters, _types[SortedClusterCol], sortedClusters.ToAnnotations());
infos[SortedClusterScoreCol] = new DataViewSchema.DetachedColumn(SortedClusterScores, _types[SortedClusterScoreCol], builder.ToAnnotations());
return(infos);
}
void SimpleTest()
{
var metadataBuilder = new DataViewSchema.Annotations.Builder();
metadataBuilder.Add("M", NumberDataViewType.Single, (ref float v) => v = 484f);
var schemaBuilder = new DataViewSchema.Builder();
schemaBuilder.AddColumn("A", new VectorDataViewType(NumberDataViewType.Single, 94));
schemaBuilder.AddColumn("B", new KeyDataViewType(typeof(uint), 17));
schemaBuilder.AddColumn("C", NumberDataViewType.Int32, metadataBuilder.ToAnnotations());
var shape = SchemaShape.Create(schemaBuilder.ToSchema());
var fakeSchema = FakeSchemaFactory.Create(shape);
var columnA = fakeSchema[0];
var columnB = fakeSchema[1];
var columnC = fakeSchema[2];
Assert.Equal("A", columnA.Name);
Assert.Equal(NumberDataViewType.Single, columnA.Type.GetItemType());
Assert.Equal(10, columnA.Type.GetValueCount());
Assert.Equal("B", columnB.Name);
Assert.Equal(InternalDataKind.U4, columnB.Type.GetRawKind());
Assert.Equal(10u, columnB.Type.GetKeyCount());
Assert.Equal("C", columnC.Name);
Assert.Equal(NumberDataViewType.Int32, columnC.Type);
var metaC = columnC.Annotations;
Assert.Single(metaC.Schema);
float mValue = -1;
metaC.GetValue("M", ref mValue);
Assert.Equal(default, mValue);
public BoundMapper(IExceptionContext ectx, TreeEnsembleFeaturizerBindableMapper owner, RoleMappedSchema schema,
string treesColumnName, string leavesColumnName, string pathsColumnName)
{
Contracts.AssertValue(ectx);
ectx.AssertValue(owner);
ectx.AssertValue(schema);
ectx.Assert(schema.Feature.HasValue);
_ectx = ectx;
_owner = owner;
InputRoleMappedSchema = schema;
// A vector containing the output of each tree on a given example.
var treeValueType = new VectorDataViewType(NumberDataViewType.Single, owner._ensemble.TrainedEnsemble.NumTrees);
// An indicator vector with length = the total number of leaves in the ensemble, indicating which leaf the example
// ends up in all the trees in the ensemble.
var leafIdType = new VectorDataViewType(NumberDataViewType.Single, owner._totalLeafCount);
// An indicator vector with length = the total number of nodes in the ensemble, indicating the nodes on
// the paths of the example in all the trees in the ensemble.
// The total number of nodes in a binary tree is equal to the number of internal nodes + the number of leaf nodes,
// and it is also equal to the number of children of internal nodes (which is 2 * the number of internal nodes)
// plus one (since the root node is not a child of any node). So we have #internal + #leaf = 2*(#internal) + 1,
// which means that #internal = #leaf - 1.
// Therefore, the number of internal nodes in the ensemble is #leaf - #trees.
var pathIdType = new VectorDataViewType(NumberDataViewType.Single, owner._totalLeafCount - owner._ensemble.TrainedEnsemble.NumTrees);
// Start creating output schema with types derived above.
var schemaBuilder = new DataViewSchema.Builder();
_treesColumnName = treesColumnName;
if (treesColumnName != null)
{
// Metadata of tree values.
var treeIdMetadataBuilder = new DataViewSchema.Annotations.Builder();
treeIdMetadataBuilder.Add(AnnotationUtils.Kinds.SlotNames, AnnotationUtils.GetNamesType(treeValueType.Size),
(ValueGetter <VBuffer <ReadOnlyMemory <char> > >)owner.GetTreeSlotNames);
// Add the column of trees' output values
schemaBuilder.AddColumn(treesColumnName, treeValueType, treeIdMetadataBuilder.ToAnnotations());
}
_leavesColumnName = leavesColumnName;
if (leavesColumnName != null)
{
// Metadata of leaf IDs.
var leafIdMetadataBuilder = new DataViewSchema.Annotations.Builder();
leafIdMetadataBuilder.Add(AnnotationUtils.Kinds.SlotNames, AnnotationUtils.GetNamesType(leafIdType.Size),
(ValueGetter <VBuffer <ReadOnlyMemory <char> > >)owner.GetLeafSlotNames);
leafIdMetadataBuilder.Add(AnnotationUtils.Kinds.IsNormalized, BooleanDataViewType.Instance, (ref bool value) => value = true);
// Add the column of leaves' IDs where the input example reaches.
schemaBuilder.AddColumn(leavesColumnName, leafIdType, leafIdMetadataBuilder.ToAnnotations());
}
_pathsColumnName = pathsColumnName;
if (pathsColumnName != null)
{
// Metadata of path IDs.
var pathIdMetadataBuilder = new DataViewSchema.Annotations.Builder();
pathIdMetadataBuilder.Add(AnnotationUtils.Kinds.SlotNames, AnnotationUtils.GetNamesType(pathIdType.Size),
(ValueGetter <VBuffer <ReadOnlyMemory <char> > >)owner.GetPathSlotNames);
pathIdMetadataBuilder.Add(AnnotationUtils.Kinds.IsNormalized, BooleanDataViewType.Instance, (ref bool value) => value = true);
// Add the column of encoded paths which the input example passes.
schemaBuilder.AddColumn(pathsColumnName, pathIdType, pathIdMetadataBuilder.ToAnnotations());
}
OutputSchema = schemaBuilder.ToSchema();
}
internal static DataViewSchema GetModelSchema(IExceptionContext ectx, Graph graph, string opType = null)
{
var schemaBuilder = new DataViewSchema.Builder();
foreach (Operation op in graph)
{
if (opType != null && opType != op.OpType)
{
continue;
}
var tfType = op.OutputType(0);
// Determine element type in Tensorflow tensor. For example, a vector of floats may get NumberType.R4 here.
var mlType = Tf2MlNetTypeOrNull(tfType);
// If the type is not supported in ML.NET then we cannot represent it as a column in an Schema.
// We also cannot output it with a TensorFlowTransform, so we skip it.
// Furthermore, operators which have NumOutputs <= 0 needs to be filtered.
// The 'GetTensorShape' method crashes TensorFlow runtime
// (https://github.com/dotnet/machinelearning/issues/2156) when the operator has no outputs.
if (mlType == null || op.NumOutputs <= 0)
{
continue;
}
// Construct the final ML.NET type of a Tensorflow variable.
var tensorShape = op.output.TensorShape.dims;
var columnType = new VectorDataViewType(mlType);
if (!(Utils.Size(tensorShape) == 1 && tensorShape[0] <= 0) &&
(Utils.Size(tensorShape) > 0 && tensorShape.Skip(1).All(x => x > 0)))
{
columnType = new VectorDataViewType(mlType, tensorShape[0] > 0 ? tensorShape : tensorShape.Skip(1).ToArray());
}
// There can be at most two metadata fields.
// 1. The first field always presents. Its value is this operator's type. For example,
// if an output is produced by an "Softmax" operator, the value of this field should be "Softmax".
// 2. The second field stores operators whose outputs are consumed by this operator. In other words,
// these values are names of some upstream operators which should be evaluated before executing
// the current operator. It's possible that one operator doesn't need any input, so this field
// can be missing.
var metadataBuilder = new DataViewSchema.Annotations.Builder();
// Create the first metadata field.
metadataBuilder.Add(TensorflowOperatorTypeKind, TextDataViewType.Instance, (ref ReadOnlyMemory <char> value) => value = op.OpType.AsMemory());
if (op.NumInputs > 0)
{
// Put upstream operators' names to an array (type: VBuffer) of string (type: ReadOnlyMemory<char>).
VBuffer <ReadOnlyMemory <char> > upstreamOperatorNames = default;
var bufferEditor = VBufferEditor.Create(ref upstreamOperatorNames, op.NumInputs);
for (int i = 0; i < op.NumInputs; ++i)
{
bufferEditor.Values[i] = op.inputs[i].op.name.AsMemory();
}
upstreamOperatorNames = bufferEditor.Commit(); // Used in metadata's getter.
// Create the second metadata field.
metadataBuilder.Add(TensorflowUpstreamOperatorsKind, new VectorDataViewType(TextDataViewType.Instance, op.NumInputs),
(ref VBuffer <ReadOnlyMemory <char> > value) => { upstreamOperatorNames.CopyTo(ref value); });
}
schemaBuilder.AddColumn(op.name, columnType, metadataBuilder.ToAnnotations());
}
return(schemaBuilder.ToSchema());
}
private void HashTestCore <T>(T val, PrimitiveDataViewType type, uint expected, uint expectedOrdered, uint expectedOrdered3, uint expectedCombined, uint expectedCombinedSparse)
{
const int bits = 10;
var builder = new DataViewSchema.Annotations.Builder();
builder.AddPrimitiveValue("Foo", type, val);
var inRow = AnnotationUtils.AnnotationsAsRow(builder.ToAnnotations());
//helper
ValueGetter <TType> hashGetter <TType>(HashingEstimator.ColumnOptions colInfo)
{
var xf = new HashingTransformer(Env, new[] { colInfo });
var mapper = ((ITransformer)xf).GetRowToRowMapper(inRow.Schema);
var col = mapper.OutputSchema["Bar"];
var outRow = mapper.GetRow(inRow, col);
return(outRow.GetGetter <TType>(col));
};
// First do an unordered hash.
var info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits);
var getter = hashGetter <uint>(info);
uint result = 0;
getter(ref result);
Assert.Equal(expected, result);
// Next do an ordered hash.
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, useOrderedHashing: true);
getter = hashGetter <uint>(info);
getter(ref result);
Assert.Equal(expectedOrdered, result);
// Next build up a vector to make sure that hashing is consistent between scalar values
// at least in the first position, and in the unordered case, the last position.
const int vecLen = 5;
var denseVec = new VBuffer <T>(vecLen, Utils.CreateArray(vecLen, val));
builder = new DataViewSchema.Annotations.Builder();
builder.Add("Foo", new VectorDataViewType(type, vecLen), (ref VBuffer <T> dst) => denseVec.CopyTo(ref dst));
inRow = AnnotationUtils.AnnotationsAsRow(builder.ToAnnotations());
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, useOrderedHashing: false);
var vecGetter = hashGetter <VBuffer <uint> >(info);
VBuffer <uint> vecResult = default;
vecGetter(ref vecResult);
Assert.Equal(vecLen, vecResult.Length);
// They all should equal this in this case.
Assert.All(vecResult.DenseValues(), v => Assert.Equal(expected, v));
// Now do ordered with the dense vector.
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, useOrderedHashing: true);
vecGetter = hashGetter <VBuffer <uint> >(info);
vecGetter(ref vecResult);
Assert.Equal(vecLen, vecResult.Length);
Assert.Equal(expectedOrdered, vecResult.GetItemOrDefault(0));
Assert.Equal(expectedOrdered3, vecResult.GetItemOrDefault(3));
Assert.All(vecResult.DenseValues(), v => Assert.True((v == 0) == (expectedOrdered == 0)));
// Now combine into one hash.
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, combine: true);
getter = hashGetter <uint>(info);
getter(ref result);
Assert.Equal(expectedCombined, result);
// Let's now do a sparse vector.
var sparseVec = new VBuffer <T>(10, 3, Utils.CreateArray(3, val), new[] { 0, 3, 7 });
builder = new DataViewSchema.Annotations.Builder();
builder.Add("Foo", new VectorDataViewType(type, vecLen), (ref VBuffer <T> dst) => sparseVec.CopyTo(ref dst));
inRow = AnnotationUtils.AnnotationsAsRow(builder.ToAnnotations());
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, useOrderedHashing: false);
vecGetter = hashGetter <VBuffer <uint> >(info);
vecGetter(ref vecResult);
Assert.Equal(10, vecResult.Length);
Assert.Equal(expected, vecResult.GetItemOrDefault(0));
Assert.Equal(expected, vecResult.GetItemOrDefault(3));
Assert.Equal(expected, vecResult.GetItemOrDefault(7));
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, useOrderedHashing: true);
vecGetter = hashGetter <VBuffer <uint> >(info);
vecGetter(ref vecResult);
Assert.Equal(10, vecResult.Length);
Assert.Equal(expectedOrdered, vecResult.GetItemOrDefault(0));
Assert.Equal(expectedOrdered3, vecResult.GetItemOrDefault(3));
info = new HashingEstimator.ColumnOptions("Bar", "Foo", numberOfBits: bits, combine: true);
getter = hashGetter <uint>(info);
getter(ref result);
Assert.Equal(expectedCombinedSparse, result);
}
/// <summary> /// Add key values annotation. /// </summary> /// <typeparam name="TValue">The value type of key values.</typeparam> /// <param name="builder">The <see cref="DataViewSchema.Annotations.Builder"/> to which to add the key values.</param> /// <param name="size">The size of key values vector.</param> /// <param name="valueType">The value type of key values. Its raw type must match <typeparamref name="TValue"/>.</param> /// <param name="getter">The getter delegate for the key values.</param> public static void AddKeyValues <TValue>(this DataViewSchema.Annotations.Builder builder, int size, PrimitiveDataViewType valueType, ValueGetter <VBuffer <TValue> > getter) => builder.Add(AnnotationUtils.Kinds.KeyValues, new VectorType(valueType, size), getter);
/// <summary> /// Add slot names annotation. /// </summary> /// <param name="builder">The <see cref="DataViewSchema.Annotations.Builder"/> to which to add the slot names.</param> /// <param name="size">The size of the slot names vector.</param> /// <param name="getter">The getter delegate for the slot names.</param> public static void AddSlotNames(this DataViewSchema.Annotations.Builder builder, int size, ValueGetter <VBuffer <ReadOnlyMemory <char> > > getter) => builder.Add(AnnotationUtils.Kinds.SlotNames, new VectorType(TextDataViewType.Instance, size), getter);
