Package org.tribuo.hash

Class ModHashCodeHasher

java.lang.Object

org.tribuo.hash.Hasher

org.tribuo.hash.ModHashCodeHasher

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.config.Configurable, com.oracle.labs.mlrg.olcut.provenance.Provenancable<com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance>, Serializable

public final class ModHashCodeHasher
extends Hasher

Hashes names using String.hashCode(), then reduces the dimension.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ModHashCodeHasher.ModHashCodeHasherProvenance	Provenance for the ModHashCodeHasher.

Field Summary

Fields inherited from class org.tribuo.hash.Hasher

MIN_LENGTH

Constructor Summary

Constructors

Constructor	Description
ModHashCodeHasher(int dimension, String salt)	Constructs a ModHashCodeHasher with the supplied parameters.
ModHashCodeHasher(String salt)	Constructs a ModHashCodeHasher with a fixed dimensionality of 100.

Method Summary

Modifier and Type	Method	Description
com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance	getProvenance()
String	hash(String name)	Hashes the supplied input using the hashing function.
void	postConfig()	Used by the OLCUT configuration system, and should not be called by external code.
void	setSalt(String salt)	The salt is transient, it must be set **to the same value as it was trained with** after the Model is deserialized.
String	toString()

Methods inherited from class org.tribuo.hash.Hasher

validateSalt

Methods inherited from class java.lang.Object

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

Constructor Details

ModHashCodeHasher

public ModHashCodeHasher(String salt)

Constructs a ModHashCodeHasher with a fixed dimensionality of 100.

Parameters:

salt - The salt value.

ModHashCodeHasher

public ModHashCodeHasher(int dimension,
 String salt)

Constructs a ModHashCodeHasher with the supplied parameters.

Parameters:

dimension - The dimensionality.

salt - The salt value.

Method Details

postConfig

public void postConfig()
                throws com.oracle.labs.mlrg.olcut.config.PropertyException

Used by the OLCUT configuration system, and should not be called by external code.

Throws:

com.oracle.labs.mlrg.olcut.config.PropertyException

hash

public String hash(String name)

Description copied from class: Hasher

Hashes the supplied input using the hashing function.

Specified by:

hash in class Hasher

Parameters:

name - The input to hash.

Returns:

A String representation of the hashed output.

setSalt

public void setSalt(String salt)

Description copied from class: Hasher

The salt is transient, it must be set **to the same value as it was trained with** after the Model is deserialized.

Specified by:

setSalt in class Hasher

Parameters:

salt - Salt value.

getProvenance

public com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance getProvenance()

toString

public String toString()

Overrides:

toString in class Object