org.openimaj.lsh.functions

Class ByteHashFunctionFactory

java.lang.Object

org.openimaj.lsh.functions.RandomisedHashFunctionFactory<byte[]>

org.openimaj.lsh.functions.ByteHashFunctionFactory

All Implemented Interfaces:

HashFunctionFactory<byte[]>

Direct Known Subclasses:

ByteHammingFactory, ByteHyperplaneCosineFactory, ByteHyperplaneL1Factory, BytePStableFactory

public abstract class ByteHashFunctionFactory
extends RandomisedHashFunctionFactory<byte[]>

Base RandomisedHashFunction for producing hash functions seeded by random numbers.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Field Summary

Fields inherited from class org.openimaj.lsh.functions.RandomisedHashFunctionFactory

ndims, rng

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ByteHashFunctionFactory(int ndims, cern.jet.random.engine.MersenneTwister rng)

Method Summary

Modifier and Type	Method and Description
DistanceComparator<byte[]>	distanceFunction()
protected abstract ByteFVComparison	fvDistanceFunction()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openimaj.util.hash.HashFunctionFactory

create

Constructor Detail

ByteHashFunctionFactory

protected ByteHashFunctionFactory(int ndims,
                                  cern.jet.random.engine.MersenneTwister rng)

Method Detail

fvDistanceFunction

protected abstract ByteFVComparison fvDistanceFunction()

distanceFunction

public final DistanceComparator<byte[]> distanceFunction()

Specified by:

distanceFunction in class RandomisedHashFunctionFactory<byte[]>

Returns:

a distance comparator that produces distances of the type approximated by this hashing scheme