com.meapsoft
Class ChunkDist

java.lang.Object
  com.meapsoft.ChunkDist

All Implemented Interfaces:

java.util.Comparator, java.io.Serializable

Direct Known Subclasses:

CosineDist, EuclideanDist

public abstract class ChunkDist

extends java.lang.Object

implements java.io.Serializable, java.util.Comparator

A way to measure the distance between two chunks. Constructor can accept another ChunkDist, which will be added to the first distance, so that distance measures can be chained together.

See Also:

Serialized Form

Field Summary

int[]	featdim
ChunkDist	next
Chunk	targetChunk

Constructor Summary

ChunkDist()

ChunkDist(ChunkDist next)

ChunkDist(ChunkDist next, int[] fd)

ChunkDist(int[] fd)

Method Summary

int	compare(java.lang.Object o1, java.lang.Object o2) Compare two Chunk's based on their distances from targetChunk
double	distance(Chunk c1, Chunk c2) Compute distance between two Chunks
boolean	equals(java.lang.Object obj)
void	setTarget(Chunk t) Set target chunk for compare function to use.

Methods inherited from class java.lang.Object

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

Field Detail

targetChunk

public Chunk targetChunk

next

public ChunkDist next

featdim

public int[] featdim

Constructor Detail

ChunkDist

public ChunkDist()

ChunkDist

public ChunkDist(ChunkDist next)

ChunkDist

public ChunkDist(int[] fd)

ChunkDist

public ChunkDist(ChunkDist next,
                 int[] fd)

Method Detail

distance

public double distance(Chunk c1,
                       Chunk c2)

Compute distance between two Chunks

setTarget

public void setTarget(Chunk t)

Set target chunk for compare function to use. This needs to be called before compare() is called or there will be NullPointerExceptions.

compare

public int compare(java.lang.Object o1,
                   java.lang.Object o2)
            throws java.lang.ClassCastException

Compare two Chunk's based on their distances from targetChunk

Specified by:

compare in interface java.util.Comparator

Throws:

java.lang.ClassCastException

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface java.util.Comparator