de.lmu.ifi.dbs.elki.distance.distancefunction.minkowski

Class LPIntegerNormDistanceFunction

java.lang.Object

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction<NumberVector<?>,DoubleDistance>

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractVectorDoubleDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractVectorDoubleDistanceNorm

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractSpatialDoubleDistanceNorm

de.lmu.ifi.dbs.elki.distance.distancefunction.minkowski.LPNormDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.minkowski.LPIntegerNormDistanceFunction

All Implemented Interfaces:

DistanceFunction<NumberVector<?>,DoubleDistance>, DoubleNorm<NumberVector<?>>, Norm<NumberVector<?>,DoubleDistance>, NumberVectorDistanceFunction<DoubleDistance>, PrimitiveDistanceFunction<NumberVector<?>,DoubleDistance>, PrimitiveDoubleDistanceFunction<NumberVector<?>>, SpatialPrimitiveDistanceFunction<NumberVector<?>,DoubleDistance>, SpatialPrimitiveDoubleDistanceFunction<NumberVector<?>>, Parameterizable

Direct Known Subclasses:

EuclideanDistanceFunction, ManhattanDistanceFunction

public class LPIntegerNormDistanceFunction
extends LPNormDistanceFunction

Provides a LP-Norm for number vectors. Optimized version for integer values of p. This will likely not have huge impact, but YMMV.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LPIntegerNormDistanceFunction.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	intp Integer value of p.

Fields inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.minkowski.LPNormDistanceFunction

invp, p, P_ID

Constructor Summary

Constructors

Constructor and Description
LPIntegerNormDistanceFunction(int p) Constructor, internal version.

Method Summary

Methods

Modifier and Type	Method and Description
double	doubleDistance(NumberVector<?> v1, NumberVector<?> v2) Computes the distance between two given Objects according to this distance function.
double	doubleMinDist(SpatialComparable mbr1, SpatialComparable mbr2) Computes the distance between the two given MBRs according to this distance function.
double	doubleNorm(NumberVector<?> v) Compute the norm of object obj as double value.
private double	doublePreDistance(NumberVector<?> v1, NumberVector<?> v2, int start, int end, double agg)
private double	doublePreDistanceMBR(SpatialComparable mbr1, SpatialComparable mbr2, int start, int end, double agg)
private double	doublePreDistanceVM(NumberVector<?> v, SpatialComparable mbr, int start, int end, double agg)
private double	doublePreNorm(NumberVector<?> v, int start, int end, double agg)
private double	doublePreNormMBR(SpatialComparable mbr, int start, int end, double agg)

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

equals, getInputTypeRestriction, getP, isMetric, toString

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

instantiate, minDist

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

norm

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

dimensionality, dimensionality, dimensionality, dimensionality, distance, getDistanceFactory

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

isSymmetric

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.PrimitiveDistanceFunction

distance

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction

getDistanceFactory, isSymmetric

Field Detail

intp

int intp

Integer value of p.

Constructor Detail

LPIntegerNormDistanceFunction

public LPIntegerNormDistanceFunction(int p)

Constructor, internal version.

Parameters:

p - Parameter p

Method Detail

doublePreDistance

private final double doublePreDistance(NumberVector<?> v1,
                       NumberVector<?> v2,
                       int start,
                       int end,
                       double agg)

doublePreDistanceVM

private final double doublePreDistanceVM(NumberVector<?> v,
                         SpatialComparable mbr,
                         int start,
                         int end,
                         double agg)

doublePreDistanceMBR

private final double doublePreDistanceMBR(SpatialComparable mbr1,
                          SpatialComparable mbr2,
                          int start,
                          int end,
                          double agg)

doublePreNorm

private final double doublePreNorm(NumberVector<?> v,
                   int start,
                   int end,
                   double agg)

doublePreNormMBR

private final double doublePreNormMBR(SpatialComparable mbr,
                      int start,
                      int end,
                      double agg)

doubleDistance

public double doubleDistance(NumberVector<?> v1,
                    NumberVector<?> v2)

Description copied from interface: PrimitiveDoubleDistanceFunction

Computes the distance between two given Objects according to this distance function.

Specified by:

doubleDistance in interface PrimitiveDoubleDistanceFunction<NumberVector<?>>

Overrides:

doubleDistance in class LPNormDistanceFunction

Parameters:

v1 - first Object

v2 - second Object

Returns:

the distance between two given Objects according to this distance function

doubleNorm

public double doubleNorm(NumberVector<?> v)

Description copied from interface: DoubleNorm

Compute the norm of object obj as double value.

Specified by:

doubleNorm in interface DoubleNorm<NumberVector<?>>

Overrides:

doubleNorm in class LPNormDistanceFunction

Parameters:

v - Object

Returns:

Double

doubleMinDist

public double doubleMinDist(SpatialComparable mbr1,
                   SpatialComparable mbr2)

Description copied from interface: SpatialPrimitiveDoubleDistanceFunction

Computes the distance between the two given MBRs according to this distance function.

Specified by:

doubleMinDist in interface SpatialPrimitiveDoubleDistanceFunction<NumberVector<?>>

Overrides:

doubleMinDist in class LPNormDistanceFunction

Parameters:

mbr1 - the first MBR object

mbr2 - the second MBR object

Returns:

the distance between the two given MBRs according to this distance function