hex.knn

Class KNNDistanceTask

java.lang.Object

jsr166y.ForkJoinTask<java.lang.Void>

jsr166y.CountedCompleter

water.H2O.H2OCountedCompleter<T>

water.DTask<T>

water.MRTask<KNNDistanceTask>

hex.knn.KNNDistanceTask

All Implemented Interfaces:

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

public class KNNDistanceTask
extends water.MRTask<KNNDistanceTask>

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
java.lang.String	_idColumn
byte	_idColumnType
int	_idIndex
int	_k
water.fvec.Chunk[]	_queryData
java.lang.String	_responseColumn
int	_responseIndex
KNNHashMap<java.lang.String,TopNTreeMap<KNNKey,java.lang.Object>>	_topNNeighboursMaps

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
KNNDistanceTask(int k, water.fvec.Chunk[] query, KNNDistance distance, int idIndex, java.lang.String idColumn, byte idType, int responseIndex, java.lang.String responseColumn) Calculate distances dor a particular chunk

Method Summary

Modifier and Type	Method and Description
water.fvec.Vec[]	fillVecs(water.fvec.Vec[] vecs) Get data from maps to Frame
void	map(water.fvec.Chunk[] cs)
water.fvec.Frame	outputFrame() Generate output frame with calculated distances.
void	reduce(KNNDistanceTask mrt)

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, 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 water.fvec.Chunk[] _queryData

_distance

public KNNDistance _distance

_topNNeighboursMaps

public KNNHashMap<java.lang.String,TopNTreeMap<KNNKey,java.lang.Object>> _topNNeighboursMaps

_idColumn

public java.lang.String _idColumn

_responseColumn

public java.lang.String _responseColumn

_idIndex

public int _idIndex

_responseIndex

public int _responseIndex

_idColumnType

public byte _idColumnType

Constructor Detail

KNNDistanceTask

public KNNDistanceTask(int k,
                       water.fvec.Chunk[] query,
                       KNNDistance distance,
                       int idIndex,
                       java.lang.String idColumn,
                       byte idType,
                       int responseIndex,
                       java.lang.String responseColumn)

Calculate distances dor a particular chunk

Method Detail

map

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

Overrides:

map in class water.MRTask<KNNDistanceTask>

reduce

public void reduce(KNNDistanceTask mrt)

Overrides:

reduce in class water.MRTask<KNNDistanceTask>

fillVecs

public water.fvec.Vec[] fillVecs(water.fvec.Vec[] vecs)

Get data from maps to Frame

Parameters:

vecs -

Returns:

filled array of vecs with calculated data

outputFrame

public water.fvec.Frame outputFrame()

Generate output frame with calculated distances.

Overrides:

outputFrame in class water.MRTask<KNNDistanceTask>

Returns: