net.obsearch.pivots.bustos.impl
Class IncrementalBustosNavarroChavezDouble<O extends OBDouble>

java.lang.Object
  net.obsearch.pivots.AbstractIncrementalPivotSelector<O>
      net.obsearch.pivots.bustos.AbstractIncrementalBustosNavarroChavez<O>
          net.obsearch.pivots.bustos.impl.IncrementalBustosNavarroChavezDouble<O>

All Implemented Interfaces:

net.obsearch.pivots.IncrementalPivotSelector<O>

public class IncrementalBustosNavarroChavezDouble<O extends OBDouble>
extends net.obsearch.pivots.bustos.AbstractIncrementalBustosNavarroChavez<O>
implements net.obsearch.pivots.IncrementalPivotSelector<O>

IncrementalBustosNavarroChavezDouble is an implementation for OBDouble objects

Author:

Arnoldo Jose Muller Molina

Field Summary

Fields inherited from class net.obsearch.pivots.AbstractIncrementalPivotSelector

pivotable, r

Constructor Summary

IncrementalBustosNavarroChavezDouble(net.obsearch.pivots.Pivotable<O> pivotable, int l, int m)
Receives the object that accepts pivots as possible candidates.

Method Summary

protected double	calculateMedian(long[] pivots, long[] x, long[] y, net.obsearch.Index<O> index)
protected void	resetCache(int x)
protected boolean	validatePivots(long[] pivots, long id, net.obsearch.Index<O> index)

Methods inherited from class net.obsearch.pivots.bustos.AbstractIncrementalBustosNavarroChavez

generatePivots

Methods inherited from class net.obsearch.pivots.AbstractIncrementalPivotSelector

enableAcceptRepeated, generatePivots, getObject, mapId, max, select, selectO, selectUnique

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.obsearch.pivots.IncrementalPivotSelector

generatePivots, generatePivots

Constructor Detail

IncrementalBustosNavarroChavezDouble

public IncrementalBustosNavarroChavezDouble(net.obsearch.pivots.Pivotable<O> pivotable,
                                            int l,
                                            int m)

Receives the object that accepts pivots as possible candidates. Selects l pairs of objects to compare which set of pivots is better, and selects m possible pivot candidates from the data set.

Parameters:

pivotable -

l - pairs of objects to select

m - m possible pivot candidates to be randomly picked.

Method Detail

calculateMedian

protected double calculateMedian(long[] pivots,
                                 long[] x,
                                 long[] y,
                                 net.obsearch.Index<O> index)
                          throws com.sleepycat.je.DatabaseException,
                                 net.obsearch.exception.IllegalIdException,
                                 IllegalAccessException,
                                 InstantiationException,
                                 net.obsearch.exception.OBException

Specified by:

calculateMedian in class net.obsearch.pivots.bustos.AbstractIncrementalBustosNavarroChavez<O extends OBDouble>

Throws:

com.sleepycat.je.DatabaseException

net.obsearch.exception.IllegalIdException

IllegalAccessException

InstantiationException

net.obsearch.exception.OBException

resetCache

protected void resetCache(int x)

Specified by:

resetCache in class net.obsearch.pivots.bustos.AbstractIncrementalBustosNavarroChavez<O extends OBDouble>

validatePivots

protected boolean validatePivots(long[] pivots,
                                 long id,
                                 net.obsearch.Index<O> index)
                          throws com.sleepycat.je.DatabaseException,
                                 net.obsearch.exception.IllegalIdException,
                                 IllegalAccessException,
                                 InstantiationException,
                                 net.obsearch.exception.OBException

Specified by:

validatePivots in class net.obsearch.pivots.bustos.AbstractIncrementalBustosNavarroChavez<O extends OBDouble>

Throws:

com.sleepycat.je.DatabaseException

net.obsearch.exception.IllegalIdException

IllegalAccessException

InstantiationException

net.obsearch.exception.OBException