hex.gram
Class Gram.GramTask

java.lang.Object
  jsr166y.ForkJoinTask<java.lang.Void>
      jsr166y.CountedCompleter
          water.H2O.H2OCountedCompleter
              water.DTask
                  water.MRTask2<T>
                      hex.FrameTask<Gram.GramTask>
                          hex.gram.Gram.GramTask

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.concurrent.Future<java.lang.Void>, Freezable

Enclosing class:

Gram

public static class Gram.GramTask
extends FrameTask<Gram.GramTask>

Task to compute gram matrix normalized by the number of observations (not counting rows with NAs). in R's notation g = t(X)%*%X/nobs, nobs = number of rows of X with no NA.

See Also:

Serialized Form

Field Summary

Gram	_gram
long	_nobs

Fields inherited from class hex.FrameTask

_caseMode, _caseVal, _catOffsets, _cats, _normMul, _normSub, _nums, _standardize

Fields inherited from class water.MRTask2

_appendables, _fr, _fs, _hi, _left, _lo, _nleft, _nodes, _nrite, _rite, _topLocal

Fields inherited from class water.DTask

_cls, _eFromNode, _exception, _fname, _lineNum, _msg, _mth

Constructor Summary

Gram.GramTask(Job job, boolean standardize, boolean hasIntercept)

Method Summary

protected void	chunkDone() Override this to do post-chunk processing work.
protected void	chunkInit() Override this to initialize at the beginning of chunk processing.
protected void	processRow(double[] nums, int ncats, int[] cats)
void	reduce(Gram.GramTask gt) Override to combine results from 'mrt' into 'this' MRTask2.

Methods inherited from class hex.FrameTask

adaptFrame, catOffsets, cats, dfork2, doIt, fullN, largestCat, map, normMul, normSub, nums, processRow, processRow, processRow, standardize

Methods inherited from class water.MRTask2

clone, closeLocal, compute2, dfork, dfork, dfork, dfork, dinvoke, doAll, doAll, doAll, doAll, getResult, map, map, map, map, map, map, map, map, map, map, map, onCompletion, onExceptionalCompletion, outputFrame, outputFrame, postGlobal, profString, reduce4, setupLocal, vecs

Methods inherited from class water.DTask

copyOver, frozenType, getDException, hasException, logVerbose, newInstance, onAck, onAckAck, read, setException, toDocField, write, writeJSONFields

Methods inherited from class water.H2O.H2OCountedCompleter

compute, priority

Methods inherited from class jsr166y.CountedCompleter

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, 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

_gram

public Gram _gram

_nobs

public long _nobs

Constructor Detail

Gram.GramTask

public Gram.GramTask(Job job,
                     boolean standardize,
                     boolean hasIntercept)

Method Detail

chunkInit

protected void chunkInit()

Description copied from class: FrameTask

Override this to initialize at the beginning of chunk processing.

Overrides:

chunkInit in class FrameTask<Gram.GramTask>

processRow

protected void processRow(double[] nums,
                          int ncats,
                          int[] cats)

Overrides:

processRow in class FrameTask<Gram.GramTask>

chunkDone

protected void chunkDone()

Description copied from class: FrameTask

Override this to do post-chunk processing work.

Overrides:

chunkDone in class FrameTask<Gram.GramTask>

reduce

public void reduce(Gram.GramTask gt)

Description copied from class: MRTask2

Override to combine results from 'mrt' into 'this' MRTask2. Both 'this' and 'mrt' are guaranteed to either have map() run on them, or be the results of a prior reduce(). Reduce is optional if, e.g., the result is some output vector.

Overrides:

reduce in class MRTask2<Gram.GramTask>