de.lmu.ifi.dbs.elki.index.preprocessed.knn

Class PartitionApproximationMaterializeKNNPreprocessor.Factory<O,D extends Distance<D>>

java.lang.Object

de.lmu.ifi.dbs.elki.index.preprocessed.knn.AbstractMaterializeKNNPreprocessor.Factory<O,D>

de.lmu.ifi.dbs.elki.index.preprocessed.knn.PartitionApproximationMaterializeKNNPreprocessor.Factory<O,D>

Type Parameters:

O - The object type

D - The distance type

All Implemented Interfaces:

IndexFactory<O,KNNIndex<O>>, InspectionUtilFrequentlyScanned, Parameterizable

Enclosing class:

PartitionApproximationMaterializeKNNPreprocessor<O,D extends Distance<D>>

public static class PartitionApproximationMaterializeKNNPreprocessor.Factory<O,D extends Distance<D>>
extends AbstractMaterializeKNNPreprocessor.Factory<O,D>

The parameterizable factory.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PartitionApproximationMaterializeKNNPreprocessor.Factory.Parameterizer<O,D extends Distance<D>> Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	partitions The number of partitions to use
static OptionID	PARTITIONS_ID Parameter to specify the number of partitions to use for materializing the kNN.

Fields inherited from class de.lmu.ifi.dbs.elki.index.preprocessed.knn.AbstractMaterializeKNNPreprocessor.Factory

DISTANCE_FUNCTION_ID, distanceFunction, k, K_ID

Constructor Summary

Constructors

Constructor and Description
PartitionApproximationMaterializeKNNPreprocessor.Factory(int k, DistanceFunction<? super O,D> distanceFunction, int partitions) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
PartitionApproximationMaterializeKNNPreprocessor<O,D>	instantiate(Relation<O> relation) Sets the database in the distance function of this index (if existing).

Methods inherited from class de.lmu.ifi.dbs.elki.index.preprocessed.knn.AbstractMaterializeKNNPreprocessor.Factory

getDistanceFactory, getDistanceFunction, getInputTypeRestriction

Methods inherited from class java.lang.Object

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

Field Detail

PARTITIONS_ID

public static final OptionID PARTITIONS_ID

Parameter to specify the number of partitions to use for materializing the kNN. Must be an integer greater than 1.

Key: -partknn.p

partitions

int partitions

The number of partitions to use

Constructor Detail

PartitionApproximationMaterializeKNNPreprocessor.Factory

public PartitionApproximationMaterializeKNNPreprocessor.Factory(int k,
                                                        DistanceFunction<? super O,D> distanceFunction,
                                                        int partitions)

Constructor.

Parameters:

k - k

distanceFunction - distance function

partitions - number of partitions

Method Detail

instantiate

public PartitionApproximationMaterializeKNNPreprocessor<O,D> instantiate(Relation<O> relation)

Description copied from interface: IndexFactory

Sets the database in the distance function of this index (if existing).

Specified by:

instantiate in interface IndexFactory<O,KNNIndex<O>>

Specified by:

instantiate in class AbstractMaterializeKNNPreprocessor.Factory<O,D extends Distance<D>>

Parameters:

relation - the relation to index