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java.lang.Object de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance> de.lmu.ifi.dbs.elki.distance.distancefunction.subspace.DimensionSelectingDistanceFunction
public class DimensionSelectingDistanceFunction
Provides a distance function that computes the distance between feature vectors as the absolute difference of their values in a specified dimension.
Nested Class Summary | |
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static class |
DimensionSelectingDistanceFunction.Parameterizer
Parameterization class. |
Field Summary | |
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private int |
dim
The dimension to be considered for distance computation. |
static OptionID |
DIM_ID
Parameter for dimensionality. |
Constructor Summary | |
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DimensionSelectingDistanceFunction(int dim)
Constructor. |
Method Summary | ||
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DoubleDistance |
centerDistance(SpatialComparable mbr1,
SpatialComparable mbr2)
Computes the distance between the centroids of the two given MBRs according to this distance function. |
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DoubleDistance |
distance(NumberVector<?,?> o1,
NumberVector<?,?> o2)
Computes the distance between two given DatabaseObjects according to this distance function. |
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double |
doubleCenterDistance(SpatialComparable mbr1,
SpatialComparable mbr2)
Computes the distance between the centroids of the two given MBRs according to this distance function. |
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double |
doubleDistance(NumberVector<?,?> v1,
NumberVector<?,?> v2)
Computes the distance between two given DatabaseObjects according to this distance function. |
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double |
doubleMinDist(SpatialComparable mbr1,
SpatialComparable mbr2)
Computes the distance between the two given MBRs according to this distance function. |
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boolean |
equals(Object obj)
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DoubleDistance |
getDistanceFactory()
Method to get the distance functions factory. |
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VectorTypeInformation<? super NumberVector<?,?>> |
getInputTypeRestriction()
Get the input data type of the function. |
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int |
getSelectedDimension()
Returns the selected dimension. |
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instantiate(Relation<T> database)
Instantiate with a database to get the actual distance query. |
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DoubleDistance |
minDist(SpatialComparable mbr1,
SpatialComparable mbr2)
Computes the distance between the two given MBRs according to this distance function. |
Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction |
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isMetric, isSymmetric |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction |
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isMetric, isSymmetric |
Field Detail |
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public static final OptionID DIM_ID
private int dim
Constructor Detail |
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public DimensionSelectingDistanceFunction(int dim)
dim
- DimensionMethod Detail |
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public double doubleDistance(NumberVector<?,?> v1, NumberVector<?,?> v2)
doubleDistance
in interface PrimitiveDoubleDistanceFunction<NumberVector<?,?>>
v1
- first DatabaseObjectv2
- second DatabaseObject
public double doubleMinDist(SpatialComparable mbr1, SpatialComparable mbr2)
SpatialPrimitiveDoubleDistanceFunction
doubleMinDist
in interface SpatialPrimitiveDoubleDistanceFunction<NumberVector<?,?>>
mbr1
- the first MBR objectmbr2
- the second MBR object
public double doubleCenterDistance(SpatialComparable mbr1, SpatialComparable mbr2)
SpatialPrimitiveDoubleDistanceFunction
doubleCenterDistance
in interface SpatialPrimitiveDoubleDistanceFunction<NumberVector<?,?>>
mbr1
- the first MBR objectmbr2
- the second MBR object
public DoubleDistance distance(NumberVector<?,?> o1, NumberVector<?,?> o2)
PrimitiveDistanceFunction
distance
in interface PrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
distance
in class AbstractPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
o1
- first DatabaseObjecto2
- second DatabaseObject
public DoubleDistance minDist(SpatialComparable mbr1, SpatialComparable mbr2)
SpatialPrimitiveDistanceFunction
minDist
in interface SpatialPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
mbr1
- the first MBR objectmbr2
- the second MBR object
public DoubleDistance centerDistance(SpatialComparable mbr1, SpatialComparable mbr2)
SpatialPrimitiveDistanceFunction
centerDistance
in interface SpatialPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
mbr1
- the first MBR objectmbr2
- the second MBR object
public int getSelectedDimension()
public VectorTypeInformation<? super NumberVector<?,?>> getInputTypeRestriction()
DistanceFunction
getInputTypeRestriction
in interface DistanceFunction<NumberVector<?,?>,DoubleDistance>
getInputTypeRestriction
in interface PrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
public DoubleDistance getDistanceFactory()
DistanceFunction
getDistanceFactory
in interface DistanceFunction<NumberVector<?,?>,DoubleDistance>
getDistanceFactory
in class AbstractPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
public <T extends NumberVector<?,?>> SpatialPrimitiveDistanceQuery<T,DoubleDistance> instantiate(Relation<T> database)
AbstractPrimitiveDistanceFunction
instantiate
in interface DistanceFunction<NumberVector<?,?>,DoubleDistance>
instantiate
in interface SpatialPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
instantiate
in class AbstractPrimitiveDistanceFunction<NumberVector<?,?>,DoubleDistance>
database
- Representation
public boolean equals(Object obj)
equals
in class Object
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