private Delegate CreateGetterDelegate <TValue>(int col)
{
Ch.Assert(0 <= col && col < _colToActivesIndex.Length);
Ch.Assert(_colToActivesIndex[col] >= 0);
Ch.Assert(Schema.GetColumnType(col).RawType == typeof(TValue));
return(CreateGetterDelegate <TValue>(_pipes[_colToActivesIndex[col]]));
}
/// <summary>
/// Creates a ColumnInfo for the column with the given column index. Note that the name
/// of the column might actually map to a different column, so this should be used with care
/// and rarely.
/// </summary>
public static ColumnInfo CreateFromIndex(Schema schema, int index)
{
Contracts.CheckValue(schema, nameof(schema));
Contracts.CheckParam(0 <= index && index < schema.ColumnCount, nameof(index));
return(new ColumnInfo(schema.GetColumnName(index), index, schema.GetColumnType(index)));
}
/// <summary>
/// The categoricalFeatures is a vector of the indices of categorical features slots.
/// This vector should always have an even number of elements, and the elements should be parsed in groups of two consecutive numbers.
/// So if its value is the range of numbers: 0,2,3,4,8,9
/// look at it as [0,2],[3,4],[8,9].
/// The way to interpret that is: feature with indices 0, 1, and 2 are one categorical
/// Features with indices 3 and 4 are another categorical. Features 5 and 6 don't appear there, so they are not categoricals.
/// </summary>
public static bool TryGetCategoricalFeatureIndices(Schema schema, int colIndex, out int[] categoricalFeatures)
{
Contracts.CheckValue(schema, nameof(schema));
Contracts.Check(colIndex >= 0, nameof(colIndex));
bool isValid = false;
categoricalFeatures = null;
if (!schema.GetColumnType(colIndex).IsKnownSizeVector)
{
return(isValid);
}
var type = schema.GetMetadataTypeOrNull(MetadataUtils.Kinds.CategoricalSlotRanges, colIndex);
if (type?.RawType == typeof(VBuffer <int>))
{
VBuffer <int> catIndices = default(VBuffer <int>);
schema.GetMetadata(MetadataUtils.Kinds.CategoricalSlotRanges, colIndex, ref catIndices);
VBufferUtils.Densify(ref catIndices);
int columnSlotsCount = schema.GetColumnType(colIndex).AsVector.VectorSizeCore;
if (catIndices.Length > 0 && catIndices.Length % 2 == 0 && catIndices.Length <= columnSlotsCount * 2)
{
int previousEndIndex = -1;
isValid = true;
for (int i = 0; i < catIndices.Values.Length; i += 2)
{
if (catIndices.Values[i] > catIndices.Values[i + 1] ||
catIndices.Values[i] <= previousEndIndex ||
catIndices.Values[i] >= columnSlotsCount ||
catIndices.Values[i + 1] >= columnSlotsCount)
{
isValid = false;
break;
}
previousEndIndex = catIndices.Values[i + 1];
}
if (isValid)
{
categoricalFeatures = catIndices.Values.Select(val => val).ToArray();
}
}
}
return(isValid);
}
private Delegate CreateGetterDelegate(int col)
{
Ch.Assert(0 <= col && col < _colToActivesIndex.Length);
Ch.Assert(_colToActivesIndex[col] >= 0);
Func <int, Delegate> createDel = CreateGetterDelegate <int>;
return(Utils.MarshalInvoke(createDel, Schema.GetColumnType(col).RawType, col));
}
public Contents(ModelLoadContext ctx, Schema input, Func <ColumnType[], string> testTypes)
{
Contracts.CheckValue(ctx, nameof(ctx));
Contracts.CheckValue(input, nameof(input));
Contracts.CheckValueOrNull(testTypes);
Input = input;
// *** Binary format ***
// int: number of added columns
// for each added column
// int: id of output column name
// int: number of input column names
// int[]: ids of input column names
int cinfo = ctx.Reader.ReadInt32();
Contracts.CheckDecode(cinfo > 0);
Infos = new ColInfo[cinfo];
Names = new string[cinfo];
for (int i = 0; i < cinfo; i++)
{
Names[i] = ctx.LoadNonEmptyString();
int csrc = ctx.Reader.ReadInt32();
Contracts.CheckDecode(csrc > 0);
int[] indices = new int[csrc];
var srcTypes = new ColumnType[csrc];
int? srcSize = 0;
for (int j = 0; j < csrc; j++)
{
string src = ctx.LoadNonEmptyString();
if (!input.TryGetColumnIndex(src, out indices[j]))
{
throw Contracts.Except("Source column '{0}' is required but not found", src);
}
srcTypes[j] = input.GetColumnType(indices[j]);
var size = srcTypes[j].ValueCount;
srcSize = size == 0 ? null : checked (srcSize + size);
}
if (testTypes != null)
{
string reason = testTypes(srcTypes);
if (reason != null)
{
throw Contracts.Except("Source columns '{0}' have invalid types: {1}. Source types: '{2}'.",
string.Join(", ", indices.Select(k => input.GetColumnName(k))),
reason,
string.Join(", ", srcTypes.Select(type => type.ToString())));
}
}
Infos[i] = new ColInfo(srcSize.GetValueOrDefault(), indices, srcTypes);
}
}
public ColumnType GetColumnType(int col)
{
_ectx.Check(0 <= col && col < ColumnCount);
if (!IsPivot(col))
{
return(_inputSchema.GetColumnType(col));
}
_ectx.Assert(0 <= _pivotIndex[col] && _pivotIndex[col] < _infos.Length);
return(_infos[_pivotIndex[col]].ItemType);
}
public static Bindings Create(OneToOneTransformBase parent, ModelLoadContext ctx, Schema input,
ITransposeSchema transInput, Func <ColumnType, string> testType)
{
Contracts.AssertValue(parent);
var host = parent.Host;
host.CheckValue(ctx, nameof(ctx));
host.AssertValue(input);
host.AssertValueOrNull(transInput);
host.AssertValueOrNull(testType);
// *** Binary format ***
// int: number of added columns
// for each added column
// int: id of output column name
// int: id of input column name
int cinfo = ctx.Reader.ReadInt32();
host.CheckDecode(cinfo > 0);
var names = new string[cinfo];
var infos = new ColInfo[cinfo];
for (int i = 0; i < cinfo; i++)
{
string dst = ctx.LoadNonEmptyString();
names[i] = dst;
// Note that in old files, the source name may be null indicating that
// the source column has the same name as the added column.
string tmp = ctx.LoadStringOrNull();
string src = tmp ?? dst;
host.CheckDecode(!string.IsNullOrEmpty(src));
int colSrc;
if (!input.TryGetColumnIndex(src, out colSrc))
{
throw host.Except("Source column '{0}' is required but not found", src);
}
var type = input.GetColumnType(colSrc);
if (testType != null)
{
string reason = testType(type);
if (reason != null)
{
throw host.Except(InvalidTypeErrorFormat, src, type, reason);
}
}
var slotType = transInput == null ? null : transInput.GetSlotType(colSrc);
infos[i] = new ColInfo(dst, colSrc, type, slotType);
}
return(new Bindings(parent, infos, input, false, names));
}
protected ManyToOneColumnBindingsBase(ManyToOneColumn[] column, Schema input, Func <ColumnType[], string> testTypes)
: base(input, true, GetNamesAndSanitize(column))
{
Contracts.AssertNonEmpty(column);
Contracts.Assert(column.Length == InfoCount);
// In lieu of actual protections, I have the following silly asserts, so we can have some
// warning if we decide to rename this argument, and so know to change the below hard-coded
// standard column name.
const string standardColumnArgName = "Column";
Contracts.Assert(nameof(ValueToKeyMappingTransformer.Arguments.Column) == standardColumnArgName);
Contracts.Assert(nameof(ColumnConcatenatingTransformer.Arguments.Column) == standardColumnArgName);
Infos = new ColInfo[InfoCount];
for (int i = 0; i < Infos.Length; i++)
{
var item = column[i];
Contracts.AssertNonEmpty(item.Name);
Contracts.AssertNonEmpty(item.Source);
var src = item.Source;
var srcIndices = new int[src.Length];
var srcTypes = new ColumnType[src.Length];
int?srcSize = 0;
for (int j = 0; j < src.Length; j++)
{
Contracts.CheckUserArg(!string.IsNullOrWhiteSpace(src[j]), nameof(ManyToOneColumn.Source));
#pragma warning disable MSML_ContractsNameUsesNameof // Unfortunately, there is no base class for the columns bindings.
if (!input.TryGetColumnIndex(src[j], out srcIndices[j]))
{
throw Contracts.ExceptUserArg(standardColumnArgName, "Source column '{0}' not found", src[j]);
}
#pragma warning restore MSML_ContractsNameUsesNameof
srcTypes[j] = input.GetColumnType(srcIndices[j]);
var size = srcTypes[j].ValueCount;
srcSize = size == 0 ? null : checked (srcSize + size);
}
if (testTypes != null)
{
string reason = testTypes(srcTypes);
if (reason != null)
{
#pragma warning disable MSML_ContractsNameUsesNameof // Unfortunately, there is no base class for the columns bindings.
throw Contracts.ExceptUserArg(standardColumnArgName, "Column '{0}' has invalid source types: {1}. Source types: '{2}'.",
item.Name, reason, string.Join(", ", srcTypes.Select(type => type.ToString())));
#pragma warning restore MSML_ContractsNameUsesNameof
}
}
Infos[i] = new ColInfo(srcSize.GetValueOrDefault(), srcIndices, srcTypes);
}
}
/// <summary>
/// Tries to create a ColumnInfo for the column with the given name in the given schema. Returns
/// false if the name doesn't map to a column.
/// </summary>
public static bool TryCreateFromName(Schema schema, string name, out ColumnInfo colInfo)
{
Contracts.CheckValue(schema, nameof(schema));
Contracts.CheckNonEmpty(name, nameof(name));
colInfo = null;
if (!schema.TryGetColumnIndex(name, out int index))
return false;
colInfo = new ColumnInfo(name, index, schema.GetColumnType(index));
return true;
}
private void CheckInputColumnTypes(Schema schema, out ColumnType labelType, out ColumnType scoreType,
out Schema.Metadata labelMetadata, out Schema.Metadata 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);
var builder = new Schema.Metadata.Builder();
builder.AddSlotNames(t.VectorSize, CreateSlotNamesGetter(schema, LabelIndex, labelType.VectorSize, "True"));
labelMetadata = builder.GetMetadata();
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);
builder = new Schema.Metadata.Builder();
builder.AddSlotNames(t.VectorSize, CreateSlotNamesGetter(schema, ScoreIndex, scoreType.VectorSize, "Predicted"));
ValueGetter <ReadOnlyMemory <char> > getter = GetScoreColumnKind;
builder.Add(new Schema.Column(MetadataUtils.Kinds.ScoreColumnKind, TextType.Instance, null), getter);
getter = GetScoreValueKind;
builder.Add(new Schema.Column(MetadataUtils.Kinds.ScoreValueKind, TextType.Instance, null), getter);
ValueGetter <uint> uintGetter = GetScoreColumnSetId(schema);
builder.Add(new Schema.Column(MetadataUtils.Kinds.ScoreColumnSetId, MetadataUtils.ScoreColumnSetIdType, null), uintGetter);
scoreMetadata = builder.GetMetadata();
}
/// <summary>
/// Gets the mapping from T into a StringBuilder representation, using various heuristics.
/// This StringBuilder representation will be a component of the composed KeyValues for the
/// hash outputs.
/// </summary>
public static ValueMapper <T, StringBuilder> GetSimpleMapper <T>(Schema schema, int col)
{
Contracts.AssertValue(schema);
Contracts.Assert(0 <= col && col < schema.ColumnCount);
var type = schema.GetColumnType(col).ItemType;
Contracts.Assert(type.RawType == typeof(T));
var conv = Conversion.Conversions.Instance;
// First: if not key, then get the standard string converison.
if (!type.IsKey)
{
return(conv.GetStringConversion <T>(type));
}
bool identity;
// Second choice: if key, utilize the KeyValues metadata for that key, if it has one and is text.
if (schema.HasKeyNames(col, type.KeyCount))
{
// REVIEW: Non-textual KeyValues are certainly possible. Should we handle them?
// Get the key names.
VBuffer <ReadOnlyMemory <char> > keyValues = default;
schema.GetMetadata(MetadataUtils.Kinds.KeyValues, col, ref keyValues);
ReadOnlyMemory <char> value = default;
// REVIEW: We could optimize for identity, but it's probably not worthwhile.
var keyMapper = conv.GetStandardConversion <T, uint>(type, NumberType.U4, out identity);
return
((ref T src, ref StringBuilder dst) =>
{
ClearDst(ref dst);
uint intermediate = 0;
keyMapper(ref src, ref intermediate);
if (intermediate == 0)
{
return;
}
keyValues.GetItemOrDefault((int)(intermediate - 1), ref value);
dst.AppendMemory(value);
});
}
// Third choice: just use the key value itself, subject to offsetting by the min.
return(conv.GetKeyStringConversion <T>(type.AsKey));
}
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.GetColumnType(_featureCol).VectorSize;
_hasSlotNames = _parentSchema.HasSlotNames(_featureCol, _featureVectorSize);
_names = new string[] { columnName };
_types = new ColumnType[] { columnType };
_columnNameMap = new Dictionary <string, int>()
{
{ columnName, 0 }
};
}
public override Schema GetOutputSchema(Schema inputSchema)
{
Host.CheckValue(inputSchema, nameof(inputSchema));
if (FeatureColumn != null)
{
if (!inputSchema.TryGetColumnIndex(FeatureColumn, out int col))
{
throw Host.ExceptSchemaMismatch(nameof(inputSchema), RoleMappedSchema.ColumnRole.Feature.Value, FeatureColumn, FeatureColumnType.ToString(), null);
}
if (!inputSchema.GetColumnType(col).Equals(FeatureColumnType))
{
throw Host.ExceptSchemaMismatch(nameof(inputSchema), RoleMappedSchema.ColumnRole.Feature.Value, FeatureColumn, FeatureColumnType.ToString(), inputSchema.GetColumnType(col).ToString());
}
}
return(Transform(new EmptyDataView(Host, inputSchema)).Schema);
}
public InputRowBase(IHostEnvironment env, Schema schema, InternalSchemaDefinition schemaDef, Delegate[] peeks, Func <int, bool> predicate)
{
Contracts.AssertValue(env);
Host = env.Register("Row");
Host.AssertValue(schema);
Host.AssertValue(schemaDef);
Host.AssertValue(peeks);
Host.AssertValue(predicate);
Host.Assert(schema.ColumnCount == schemaDef.Columns.Length);
Host.Assert(schema.ColumnCount == peeks.Length);
_colCount = schema.ColumnCount;
Schema = schema;
_getters = new Delegate[_colCount];
for (int c = 0; c < _colCount; c++)
{
_getters[c] = predicate(c) ? CreateGetter(schema.GetColumnType(c), schemaDef.Columns[c], peeks[c]) : null;
}
}
public static Bindings Create(OneToOneTransformBase parent, OneToOneColumn[] column, Schema input,
ITransposeSchema transInput, Func <ColumnType, string> testType)
{
Contracts.AssertValue(parent);
var host = parent.Host;
host.CheckUserArg(Utils.Size(column) > 0, nameof(column));
host.AssertValue(input);
host.AssertValueOrNull(transInput);
host.AssertValueOrNull(testType);
var names = new string[column.Length];
var infos = new ColInfo[column.Length];
for (int i = 0; i < names.Length; i++)
{
var item = column[i];
host.CheckUserArg(item.TrySanitize(), nameof(OneToOneColumn.Name), "Invalid new column name");
names[i] = item.Name;
int colSrc;
if (!input.TryGetColumnIndex(item.Source, out colSrc))
{
throw host.ExceptUserArg(nameof(OneToOneColumn.Source), "Source column '{0}' not found", item.Source);
}
var type = input.GetColumnType(colSrc);
if (testType != null)
{
string reason = testType(type);
if (reason != null)
{
throw host.ExceptUserArg(nameof(OneToOneColumn.Source), InvalidTypeErrorFormat, item.Source, type, reason);
}
}
var slotType = transInput == null ? null : transInput.GetSlotType(colSrc);
infos[i] = new ColInfo(names[i], colSrc, type, slotType);
}
return(new Bindings(parent, infos, input, true, names));
}
/// <summary>
/// Initializes a new reference of <see cref="SingleFeaturePredictionTransformerBase{TModel, TScorer}"/>.
/// </summary>
/// <param name="host">The local instance of <see cref="IHost"/>.</param>
/// <param name="model">The model used for scoring.</param>
/// <param name="trainSchema">The schema of the training data.</param>
/// <param name="featureColumn">The feature column name.</param>
public SingleFeaturePredictionTransformerBase(IHost host, TModel model, Schema trainSchema, string featureColumn)
: base(host, model, trainSchema)
{
FeatureColumn = featureColumn;
FeatureColumn = featureColumn;
if (featureColumn == null)
{
FeatureColumnType = null;
}
else if (!trainSchema.TryGetColumnIndex(featureColumn, out int col))
{
throw Host.ExceptSchemaMismatch(nameof(featureColumn), RoleMappedSchema.ColumnRole.Feature.Value, featureColumn);
}
else
{
FeatureColumnType = trainSchema.GetColumnType(col);
}
BindableMapper = ScoreUtils.GetSchemaBindableMapper(Host, model);
}
private bool SchemasMatch(Schema schema1, Schema schema2)
{
if (schema1.ColumnCount != schema2.ColumnCount)
{
return(false);
}
int colLim = schema1.ColumnCount;
for (int col = 0; col < colLim; col++)
{
var type1 = schema1.GetColumnType(col);
var type2 = schema2.GetColumnType(col);
if (!type1.Equals(type2))
{
return(false);
}
}
return(true);
}
public void SaveAsOnnx(OnnxContext ctx)
{
Host.CheckValue(ctx, nameof(ctx));
Host.Assert(CanSaveOnnx);
for (int iinfo = 0; iinfo < Infos.Length; ++iinfo)
{
ColInfo info = Infos[iinfo];
string sourceColumnName = Source.Schema.GetColumnName(info.Source);
if (!ctx.ContainsColumn(sourceColumnName))
{
ctx.RemoveColumn(info.Name, false);
continue;
}
if (!SaveAsOnnxCore(ctx, iinfo, info, ctx.GetVariableName(sourceColumnName),
ctx.AddIntermediateVariable(Schema.GetColumnType(_bindings.MapIinfoToCol(iinfo)), info.Name)))
{
ctx.RemoveColumn(info.Name, true);
}
}
}
private static void PrintSchema(TextWriter writer, Arguments args, Schema schema, ITransposeSchema tschema)
{
Contracts.AssertValue(writer);
Contracts.AssertValue(args);
Contracts.AssertValue(schema);
Contracts.AssertValueOrNull(tschema);
#if !CORECLR
if (args.ShowJson)
{
writer.WriteLine("Json Schema not supported.");
return;
}
#endif
int colLim = schema.ColumnCount;
var itw = new IndentedTextWriter(writer, " ");
itw.WriteLine("{0} columns:", colLim);
using (itw.Nest())
{
var names = default(VBuffer <ReadOnlyMemory <char> >);
for (int col = 0; col < colLim; col++)
{
var name = schema.GetColumnName(col);
var type = schema.GetColumnType(col);
var slotType = tschema == null ? null : tschema.GetSlotType(col);
itw.WriteLine("{0}: {1}{2}", name, type, slotType == null ? "" : " (T)");
bool metaVals = args.ShowMetadataValues;
if (metaVals || args.ShowMetadataTypes)
{
ShowMetadata(itw, schema, col, metaVals);
continue;
}
if (!args.ShowSlots)
{
continue;
}
if (!type.IsKnownSizeVector)
{
continue;
}
ColumnType typeNames;
if ((typeNames = schema.GetMetadataTypeOrNull(MetadataUtils.Kinds.SlotNames, col)) == null)
{
continue;
}
if (typeNames.VectorSize != type.VectorSize || !typeNames.ItemType.IsText)
{
Contracts.Assert(false, "Unexpected slot names type");
continue;
}
schema.GetMetadata(MetadataUtils.Kinds.SlotNames, col, ref names);
if (names.Length != type.VectorSize)
{
Contracts.Assert(false, "Unexpected length of slot names vector");
continue;
}
using (itw.Nest())
{
bool verbose = args.Verbose ?? false;
foreach (var kvp in names.Items(all: verbose))
{
if (verbose || !kvp.Value.IsEmpty)
{
itw.WriteLine("{0}:{1}", kvp.Key, kvp.Value);
}
}
}
}
}
}
public ColumnType GetColumnType(int col)
{
Contracts.CheckParam(0 <= col && col < ColumnCount, nameof(col));
return(_input.GetColumnType(Sources[col]));
}
