de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.mktrees.mkmax
Class MkMaxTreeNode<O,D extends Distance<D>>

java.lang.Object
  de.lmu.ifi.dbs.elki.persistent.AbstractPage
      de.lmu.ifi.dbs.elki.index.tree.AbstractNode<E>
          de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.AbstractMTreeNode<O,D,MkMaxTreeNode<O,D>,MkMaxEntry<D>>
              de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.mktrees.mkmax.MkMaxTreeNode<O,D>

Type Parameters:

O - the type of DatabaseObject to be stored in the MkMaxTree

D - the type of Distance used in the MkMaxTree

All Implemented Interfaces:

Node<MkMaxEntry<D>>, Page, Externalizable, Serializable

 class MkMaxTreeNode<O,D extends Distance<D>>
extends AbstractMTreeNode<O,D,MkMaxTreeNode<O,D>,MkMaxEntry<D>>

Represents a node in an MkMaxTree.

Field Summary

private static long

serialVersionUID Serial version

Fields inherited from class de.lmu.ifi.dbs.elki.index.tree.AbstractNode

entries, isLeaf, numEntries

Constructor Summary

MkMaxTreeNode()
Empty constructor for Externalizable interface.

MkMaxTreeNode(int capacity, boolean isLeaf)
Creates a new MkMaxTreeNode object.

Method Summary

void	adjustEntry(MkMaxEntry<D> entry, DBID routingObjectID, D parentDistance, AbstractMTree<O,D,MkMaxTreeNode<O,D>,MkMaxEntry<D>> mTree) Calls the super method and adjust additionally the k-nearest neighbor distance of this node as the maximum of the k-nearest neighbor distances of all its entries.
protected void	integrityCheckParameters(MkMaxEntry<D> parentEntry, MkMaxTreeNode<O,D> parent, int index, AbstractMTree<O,D,MkMaxTreeNode<O,D>,MkMaxEntry<D>> mTree) Calls the super method and tests if the k-nearest neighbor distance of this node is correctly set.
protected D	kNNDistance(DistanceQuery<O,D> distanceFunction) Determines and returns the k-nearest neighbor distance of this node as the maximum of the k-nearest neighbor distances of all entries.

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.AbstractMTreeNode

coveringRadius, integrityCheck

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.AbstractNode

addDirectoryEntry, addLeafEntry, children, deleteAllEntries, deleteEntry, equals, getCapacity, getEntries, getEntry, getNumEntries, isLeaf, readExternal, splitTo, splitTo, toString, writeExternal

Methods inherited from class de.lmu.ifi.dbs.elki.persistent.AbstractPage

getPageID, hashCode, isDirty, setDirty, setPageID

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.persistent.Page

getPageID, isDirty, setDirty, setPageID

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial version

See Also:

Constant Field Values

Constructor Detail

MkMaxTreeNode

public MkMaxTreeNode()

Empty constructor for Externalizable interface.

MkMaxTreeNode

public MkMaxTreeNode(int capacity,
                     boolean isLeaf)

Creates a new MkMaxTreeNode object.

Parameters:

capacity - the capacity (maximum number of entries plus 1 for overflow) of this node

isLeaf - indicates whether this node is a leaf node

Method Detail

kNNDistance

protected D kNNDistance(DistanceQuery<O,D> distanceFunction)

Determines and returns the k-nearest neighbor distance of this node as the maximum of the k-nearest neighbor distances of all entries.

Parameters:

distanceFunction - the distance function

Returns:

the knn distance of this node

adjustEntry

public void adjustEntry(MkMaxEntry<D> entry,
                        DBID routingObjectID,
                        D parentDistance,
                        AbstractMTree<O,D,MkMaxTreeNode<O,D>,MkMaxEntry<D>> mTree)

Calls the super method and adjust additionally the k-nearest neighbor distance of this node as the maximum of the k-nearest neighbor distances of all its entries.

Overrides:

adjustEntry in class AbstractMTreeNode<O,D extends Distance<D>,MkMaxTreeNode<O,D extends Distance<D>>,MkMaxEntry<D extends Distance<D>>>

Parameters:

entry - the entry representing this node

routingObjectID - the id of the (new) routing object of this node

parentDistance - the distance from the routing object of this node to the routing object of the parent node

mTree - the M-Tree object holding this node

integrityCheckParameters

protected void integrityCheckParameters(MkMaxEntry<D> parentEntry,
                                        MkMaxTreeNode<O,D> parent,
                                        int index,
                                        AbstractMTree<O,D,MkMaxTreeNode<O,D>,MkMaxEntry<D>> mTree)

Calls the super method and tests if the k-nearest neighbor distance of this node is correctly set.

Overrides:

integrityCheckParameters in class AbstractMTreeNode<O,D extends Distance<D>,MkMaxTreeNode<O,D extends Distance<D>>,MkMaxEntry<D extends Distance<D>>>

Parameters:

parentEntry - the entry representing the parent

parent - the parent holding the entry representing this node

index - the index of the entry in the parents child arry

mTree - the M-Tree holding this node