hex.glm
Class GLMTask.GLMIterationTask

java.lang.Object
  jsr166y.ForkJoinTask<java.lang.Void>
      jsr166y.CountedCompleter
          water.H2O.H2OCountedCompleter
              water.DTask
                  water.MRTask2<T>
                      hex.FrameTask<T>
                          hex.glm.GLMTask<GLMTask.GLMIterationTask>
                              hex.glm.GLMTask.GLMIterationTask

All Implemented Interfaces:

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

Enclosing class:

GLMTask<T extends GLMTask<T>>

public static class GLMTask.GLMIterationTask
extends GLMTask<GLMTask.GLMIterationTask>

One iteration of glm, computes weighted gram matrix and t(x)*y vector and t(y)*y scalar.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class hex.glm.GLMTask

GLMTask.GLMIterationTask

Field Summary

Fields inherited from class hex.glm.GLMTask

_beta

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

GLMTask.GLMIterationTask(GLMTask.GLMIterationTask git, double[] beta)

GLMTask.GLMIterationTask(Job job, GLMParams glm, double[] beta, boolean standardize, double reg, GLMParams.CaseMode caseMode, double caseVal, int step, int offset, boolean complement)

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.
void	processRow(double[] nums, int ncats, int[] cats, double y) Method to process one row of the data for GLM functions.
void	reduce(GLMTask.GLMIterationTask git) Override to combine results from 'mrt' into 'this' MRTask2.

Methods inherited from class hex.glm.GLMTask

computeEta, diagN

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

Constructor Detail

GLMTask.GLMIterationTask

public GLMTask.GLMIterationTask(Job job,
                                GLMParams glm,
                                double[] beta,
                                boolean standardize,
                                double reg,
                                GLMParams.CaseMode caseMode,
                                double caseVal,
                                int step,
                                int offset,
                                boolean complement)

GLMTask.GLMIterationTask

public GLMTask.GLMIterationTask(GLMTask.GLMIterationTask git,
                                double[] beta)

Method Detail

processRow

public final void processRow(double[] nums,
                             int ncats,
                             int[] cats,
                             double y)

Description copied from class: FrameTask

Method to process one row of the data for GLM functions. Numeric and categorical values are passed separately, as is response. Categoricals are passed as absolute indexes into the expanded beta vector, 0-levels are skipped (so the number of passed categoricals will not be the same for every row). Categorical expansion/indexing: Categoricals are placed in the beginning of the beta vector. Each cat variable with n levels is expanded into n-1 independent binary variables. Indexes in cats[] will point to the appropriate coefficient in the beta vector, so e.g. assume we have 2 categorical columns both with values A,B,C, then the following rows will have following indexes: A,A - ncats = 0, we do not pass any categorical here A,B - ncats = 1, indexes = [2] B,B - ncats = 2, indexes = [0,2] and so on

Overrides:

processRow in class FrameTask<GLMTask.GLMIterationTask>

Parameters:

nums - - numeric values of this row

ncats - - number of passed (non-zero) categoricals

cats - - indexes of categoricals into the expanded beta-vector.

y - - numeric value for the response

chunkInit

protected void chunkInit()

Description copied from class: FrameTask

Override this to initialize at the beginning of chunk processing.

Overrides:

chunkInit in class FrameTask<GLMTask.GLMIterationTask>

chunkDone

protected void chunkDone()

Description copied from class: FrameTask

Override this to do post-chunk processing work.

Overrides:

chunkDone in class FrameTask<GLMTask.GLMIterationTask>

reduce

public void reduce(GLMTask.GLMIterationTask git)

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<GLMTask.GLMIterationTask>