Environment for
DeveLoping
KDD-Applications
Supported by Index-Structures

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

java.lang.Object
  extended by de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      extended by de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction<O,D>
          extended by de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDistanceFunction<V,DoubleDistance>
              extended by de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.SimilarityAdapterAbstract<V>
                  extended by de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.SimilarityAdapterArccos<V>
Type Parameters:
V - Vector class to process.
All Implemented Interfaces:
DistanceFunction<V,DoubleDistance>, MeasurementFunction<V,DoubleDistance>, Parameterizable

public class SimilarityAdapterArccos<V extends NumberVector<V,?>>
extends SimilarityAdapterAbstract<V>

Adapter from a normalized similarity function to a distance function using arccos(sim).

Author:
Erich Schubert

Field Summary
 
Fields inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.SimilarityAdapterAbstract
SIMILARITY_FUNCTION_ID, SIMILARITY_FUNCTION_PARAM, similarityFunction
 
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
SimilarityAdapterArccos(Parameterization config)
          Constructor.
 
Method Summary
 DoubleDistance distance(V v1, V v2)
          Distance implementation
 
Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.adapter.SimilarityAdapterAbstract
setDatabase
 
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, 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, undefinedDistance, valueOf
 

Constructor Detail

SimilarityAdapterArccos

public SimilarityAdapterArccos(Parameterization config)
Constructor.

Parameters:
config - Configuration
Method Detail

distance

public DoubleDistance distance(V v1,
                               V v2)
Distance implementation

Specified by:
distance in interface DistanceFunction<V extends NumberVector<V,?>,DoubleDistance>
Specified by:
distance in class SimilarityAdapterAbstract<V extends NumberVector<V,?>>
Parameters:
v1 - first DatabaseObject
v2 - second DatabaseObject
Returns:
the distance between two given DatabaseObjects according to this distance function

Release 0.3 (2010-03-31_1612)