de.lmu.ifi.dbs.elki.distance.distancefunction
Class WeightedDistanceFunction<V extends NumberVector<V,?>>

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction<O,D>
          de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDistanceFunction<V,DoubleDistance>
              de.lmu.ifi.dbs.elki.distance.distancefunction.WeightedDistanceFunction<V>

Type Parameters:

V - the type of FeatureVector to compute the distances in between

All Implemented Interfaces:

DistanceFunction<V,DoubleDistance>, MeasurementFunction<V,DoubleDistance>, Parameterizable

Direct Known Subclasses:

HSBHistogramQuadraticDistanceFunction, RGBHistogramQuadraticDistanceFunction

public class WeightedDistanceFunction<V extends NumberVector<V,?>>
extends AbstractDistanceFunction<V,DoubleDistance>

Provides the Weighted distance for feature vectors.

Author:

Elke Achtert

Field Summary

protected Matrix

weightMatrix The weight matrix.

Fields inherited from class de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction

distanceFactory

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug, logger

Constructor Summary

WeightedDistanceFunction(Matrix weightMatrix)
Provides the Weighted distance for feature vectors.

Method Summary

DoubleDistance

distance(V o1, V o2) Provides the Weighted distance for feature vectors.

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDistanceFunction

distance, distance

Methods inherited from class de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction

getDatabase, getDistanceFactory, infiniteDistance, nullDistance, setDatabase, undefinedDistance, valueOf

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, progress, verbose, warning

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.MeasurementFunction

getDistanceFactory, infiniteDistance, nullDistance, setDatabase, undefinedDistance, valueOf

Field Detail

weightMatrix

protected Matrix weightMatrix

The weight matrix.

Constructor Detail

WeightedDistanceFunction

public WeightedDistanceFunction(Matrix weightMatrix)

Provides the Weighted distance for feature vectors.

Parameters:

weightMatrix - weight matrix

Method Detail

distance

public DoubleDistance distance(V o1,
                               V o2)

Provides the Weighted distance for feature vectors.

Parameters:

o1 - first DatabaseObject

o2 - second DatabaseObject

Returns:

the Weighted distance between the given two vectors as an instance of DoubleDistance.