org.openimaj.lsh.functions

Class ShortPStableFactory.PStableFunction

java.lang.Object

org.openimaj.lsh.functions.RandomisedHashFunction<short[]>

org.openimaj.lsh.functions.ShortHashFunction

org.openimaj.lsh.functions.ShortPStableFactory.PStableFunction

All Implemented Interfaces:

HashFunction<short[]>

Enclosing class:

ShortPStableFactory

protected abstract class ShortPStableFactory.PStableFunction
extends ShortHashFunction

Field Summary

Fields

Modifier and Type	Field and Description
protected double	b
protected double[]	r

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

random

Method Summary

Modifier and Type	Method and Description
int	computeHashCode(short[] point) Compute the hash code for the object
int	computeHashCode(SparseShortArray array) Compute the hash code for the sparse array.

Methods inherited from class org.openimaj.lsh.functions.ShortHashFunction

computeHashCode, computeHashCode

Methods inherited from class java.lang.Object

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

Field Detail

r

protected double[] r

b

protected double b

Method Detail

computeHashCode

public final int computeHashCode(short[] point)

Description copied from interface: HashFunction

Compute the hash code for the object

Parameters:

point - the object

Returns:

the hash code

computeHashCode

public int computeHashCode(SparseShortArray array)

Description copied from class: ShortHashFunction

Compute the hash code for the sparse array. This method converts the sparse array to a dense one and computes the hash code from that. Subclasses should override this method for improved performance.

Overrides:

computeHashCode in class ShortHashFunction

Parameters:

array - the sparse array

Returns:

the hash code