ambit2.similarity.measure

Class FingerprintDistance

java.lang.Object

ambit2.similarity.measure.FingerprintDistance

All Implemented Interfaces:

IDistanceFunction<BitSet>

public class FingerprintDistance
extends Object
implements IDistanceFunction<BitSet>

Tanimoto similarity index between fingerprints.

 1 - objects are same
 0 - objects are different
 

Author:

Nina Jeliazkova nina@acad.bg Modified Feb 18, 2007

Constructor Summary

Constructors

Constructor and Description
FingerprintDistance()

Method Summary

Modifier and Type	Method and Description
float	getDistance(BitSet object1, BitSet object2) Distance should be large if objects are "far away" from each other, i.e.
float	getNativeComparison(BitSet bitset1, BitSet bitset2) Calculates native comparison index between two objects (distance or similarity).
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FingerprintDistance

public FingerprintDistance()

Method Detail

getDistance

public float getDistance(BitSet object1,
                         BitSet object2)
                  throws Exception

Description copied from interface: IDistanceFunction

Distance should be large if objects are "far away" from each other, i.e. dissimilar.

Specified by:

getDistance in interface IDistanceFunction<BitSet>

Returns:

the distance

Throws:

Exception

getNativeComparison

public float getNativeComparison(BitSet bitset1,
                                 BitSet bitset2)
                          throws Exception

Description copied from interface: IDistanceFunction

Calculates native comparison index between two objects (distance or similarity). Similarity is large if objects are similar to each other, in contrast with IDistanceFunction.getDistance(Object, Object).

Specified by:

getNativeComparison in interface IDistanceFunction<BitSet>

Returns:

the distance

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object