de.lmu.ifi.dbs.elki.distance.distancefunction
Class SharingDependentItemsetDistanceFunction

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable
          de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction<O,D>
              de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDistanceFunction<O,DoubleDistance>
                  de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDoubleDistanceFunction<BitVector>
                      de.lmu.ifi.dbs.elki.distance.distancefunction.SharingDependentItemsetDistanceFunction

All Implemented Interfaces:

DistanceFunction<BitVector,DoubleDistance>, MeasurementFunction<BitVector,DoubleDistance>, Loggable, Parameterizable

Direct Known Subclasses:

FrequencyDependentItemsetDistanceFunction, SharedMaximumDistanceFunction, SharedUnitedDistanceFunction

public abstract class SharingDependentItemsetDistanceFunction
extends AbstractDoubleDistanceFunction<BitVector>

Provides a DistanceFunction to compute a Distance between BitVectors based on the number of shared bits.

Author:

Arthur Zimek

Field Summary

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

INFINITY_PATTERN

Fields inherited from class de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable

optionHandler

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

debug

Constructor Summary

protected

SharingDependentItemsetDistanceFunction()

Method Summary

protected double

ratio(int i, int card) Returns 1 if card is 0, i divided by card otherwise.

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

infiniteDistance, nullDistance, undefinedDistance, valueOf

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

distance, distance, isInfiniteDistance, isNullDistance, isUndefinedDistance

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

getDatabase, matches, requiredInputPattern, setDatabase, setRequiredInputPattern

Methods inherited from class de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable

addOption, checkGlobalParameterConstraints, deleteOption, description, description, description, getAttributeSettings, getParameters, getParameterValue, getPossibleOptions, inlineDescription, isSet, setParameters, setParameters

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

debugFine, debugFiner, debugFinest, exception, message, progress, progress, progress, verbose, 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.distancefunction.DistanceFunction

distance

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

requiredInputPattern, setDatabase

Methods inherited from interface de.lmu.ifi.dbs.elki.utilities.optionhandling.Parameterizable

checkGlobalParameterConstraints, description, getAttributeSettings, getParameters, getPossibleOptions, inlineDescription, setParameters

Constructor Detail

SharingDependentItemsetDistanceFunction

protected SharingDependentItemsetDistanceFunction()

Method Detail

ratio

protected double ratio(int i,
                       int card)

Returns 1 if card is 0, i divided by card otherwise.

Parameters:

i - the number of bits

card - the cardinality of a bitset

Returns:

1 if card is 0, i divided by card otherwise