org.openimaj.lsh.functions

Class IntHashFunctionFactory

java.lang.Object

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

org.openimaj.lsh.functions.IntHashFunctionFactory

All Implemented Interfaces:

org.openimaj.util.hash.HashFunctionFactory<int[]>

Direct Known Subclasses:

IntHammingFactory, IntHyperplaneCosineFactory, IntHyperplaneL1Factory, IntPStableFactory

public abstract class IntHashFunctionFactory
extends RandomisedHashFunctionFactory<int[]>

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

Method Summary

Modifier and Type	Method and Description
org.openimaj.util.comparator.DistanceComparator<int[]>	distanceFunction()
protected abstract IntFVComparison	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

IntHashFunctionFactory

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

Method Detail

fvDistanceFunction

protected abstract IntFVComparison fvDistanceFunction()

distanceFunction

public final org.openimaj.util.comparator.DistanceComparator<int[]> distanceFunction()

Specified by:

distanceFunction in class RandomisedHashFunctionFactory<int[]>

Returns:

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