DataKind Enum

Definition

Namespace:

Microsoft.ML.Data

Assembly:

Microsoft.ML.Core.dll

Package:

Microsoft.ML v3.0.1

Specifies a simple data type.

public enum DataKind

type DataKind = 

Public Enum DataKind

Inheritance

Enum

DataKind

Fields

Name	Value	Description
SByte	1	1-byte integer, type of SByte.
Byte	2	1-byte unsigned integer, type of Byte.
Int16	3	2-byte integer, type of Int16.
UInt16	4	2-byte unsigned integer, type of UInt16.
Int32	5	4-byte integer, type of Int32.
UInt32	6	4-byte unsigned integer, type of UInt32.
Int64	7	8-byte integer, type of Int64.
UInt64	8	8-byte unsigned integer, type of UInt64.
Single	9	4-byte floating-point number, type of Single.
Double	10	8-byte floating-point number, type of Double.
String	11	string, type of ReadOnlyMemory<T>, where T is Char. Also compatible with String.
Boolean	12	boolean variable type, type of Boolean.
TimeSpan	13	type of TimeSpan.
DateTime	14	type of DateTime.
DateTimeOffset	15	type of DateTimeOffset.

Remarks

Some transforms use the default value and/or missing value of the data types. The table below shows the default value definition for each of the data types.

Type	Default Value	IsDefault Indicator
String or text	Empty or null string (both result in empty System.ReadOnlyMemory<char>	IsEmpty
Key type (supported by the unsigned integer types in DataKind)	Not defined	Always false
All other types	Default value of the corresponding system type as defined by .NET standard. In C#, default value expression default(T) provides that value.	Equality test with the default value

The table below shows the missing value definition for each of the data types.

Type	Missing Value	IsMissing Indicator
String or text	Not defined	Always false
Key type (supported by the unsigned integer types in DataKind)	0	Equality test with 0
Single	NaN	IsNaN(Single)
Double	NaN	IsNaN(Double)
All other types	Not defined	Always false