hex.knn

Class KNNScoringTask

java.lang.Object

jsr166y.ForkJoinTask<java.lang.Void>

jsr166y.CountedCompleter

water.H2O.H2OCountedCompleter<T>

water.DTask<T>

water.MRTask<KNNScoringTask>

hex.knn.KNNScoringTask

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.concurrent.Future<java.lang.Void>, jsr166y.ForkJoinPool.ManagedBlocker, water.Freezable<KNNScoringTask>

public class KNNScoringTask
extends water.MRTask<KNNScoringTask>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class water.MRTask

water.MRTask.PostMapAction<T extends water.MRTask.PostMapAction<T>>

Nested classes/interfaces inherited from class water.DTask

water.DTask.DKeyTask<T extends water.DTask.DKeyTask,V extends water.Keyed>, water.DTask.RemoveCall

Field Summary

Fields

Modifier and Type	Field and Description
KNNDistance	_distance
TopNTreeMap<KNNKey,java.lang.Integer>	_distancesMap
int	_domainSize
byte	_idColumnType
int	_idIndex
int	_k
double[]	_queryData
int	_responseIndex

Fields inherited from class water.MRTask

_appendables, _fr, _fs, _hi, _keys, _left, _lo, _nhi, _nleft, _nlo, _nrite, _rite, _run_local, _topLocal

Fields inherited from class water.DTask

_ex

Constructor Summary

Constructors

Constructor and Description
KNNScoringTask(double[] query, int k, int domainSize, KNNDistance distance, int idIndex, byte idType, int responseIndex) Go through the whole input frame to find the k near distances and score based on them.

Method Summary

Modifier and Type	Method and Description
void	map(water.fvec.Chunk[] cs)
void	reduce(KNNScoringTask mrt)
double[]	score()

Methods inherited from class water.MRTask

appendables, asyncExecOnAllNodes, block, closeLocal, compute2, dfork, dfork, dfork, dfork, dfork, dinvoke, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAllNodes, getResult, getResult, isReleasable, map, map, map, map, map, map, map, map, map, map, map, modifiesVolatileVecs, onCompletion, onExceptionalCompletion, outputFrame, outputFrame, outputFrame, postGlobal, profile, profString, self, setupLocal, withPostMapAction

Methods inherited from class water.DTask

copyOver, getDException, hasException, logVerbose, onAck, onAckAck, setException

Methods inherited from class water.H2O.H2OCountedCompleter

asBytes, clone, compute, compute1, currThrPriority, frozenType, icer, priority, read, readJSON, reloadFromBytes, write, writeJSON

Methods inherited from class jsr166y.CountedCompleter

__tryComplete, addToPendingCount, compareAndSetPendingCount, complete, exec, getCompleter, getPendingCount, getRawResult, setCompleter, setPendingCount, setRawResult, tryComplete

Methods inherited from class jsr166y.ForkJoinTask

adapt, adapt, adapt, cancel, compareAndSetForkJoinTaskTag, completeExceptionally, fork, get, get, get, getException, getForkJoinTaskTag, getPool, getQueuedTaskCount, getSurplusQueuedTaskCount, helpQuiesce, inForkJoinPool, invoke, invokeAll, invokeAll, invokeAll, isCancelled, isCompletedAbnormally, isCompletedNormally, isDone, join, peekNextLocalTask, pollNextLocalTask, pollTask, quietlyComplete, quietlyInvoke, quietlyJoin, reinitialize, setForkJoinTaskTag, tryUnfork

Methods inherited from class java.lang.Object

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

Field Detail

_k

public int _k

_queryData

public double[] _queryData

_distance

public KNNDistance _distance

_distancesMap

public TopNTreeMap<KNNKey,java.lang.Integer> _distancesMap

_idIndex

public int _idIndex

_responseIndex

public int _responseIndex

_idColumnType

public byte _idColumnType

_domainSize

public int _domainSize

Constructor Detail

KNNScoringTask

public KNNScoringTask(double[] query,
                      int k,
                      int domainSize,
                      KNNDistance distance,
                      int idIndex,
                      byte idType,
                      int responseIndex)

Go through the whole input frame to find the k near distances and score based on them.

Method Detail

map

public void map(water.fvec.Chunk[] cs)

Overrides:

map in class water.MRTask<KNNScoringTask>

reduce

public void reduce(KNNScoringTask mrt)

Overrides:

reduce in class water.MRTask<KNNScoringTask>

score

public double[] score()