org.apache.ignite.ml.selection.split.mapper

Class SHA256UniformMapper<K,V>

java.lang.Object

org.apache.ignite.ml.selection.split.mapper.SHA256UniformMapper<K,V>

Type Parameters:

K - Type of a key.

V - Type of a value.

All Implemented Interfaces:

Serializable, UniformMapper<K,V>

public class SHA256UniformMapper<K,V>
extends Object
implements UniformMapper<K,V>

Implementation of uniform mappers based on SHA-256 hashing algorithm.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SHA256UniformMapper() Constructs a new instance of SHA-256 uniform mapper.
SHA256UniformMapper(Random random) Constructs a new instance of SHA-256 uniform mapper.

Method Summary

Modifier and Type	Method and Description
double	map(K key, V val) Maps key-value pair to a point on the segment (0, 1).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SHA256UniformMapper

public SHA256UniformMapper()

Constructs a new instance of SHA-256 uniform mapper.

SHA256UniformMapper

public SHA256UniformMapper(Random random)

Constructs a new instance of SHA-256 uniform mapper.

Parameters:

random - Random used to define shuffle strategy.

Method Detail

map

public double map(K key,
                  V val)

Maps key-value pair to a point on the segment (0, 1).

Specified by:

map in interface UniformMapper<K,V>

Parameters:

key - Key.

val - Value.

Returns:

Point on the segment (0, 1).