hex.glm

Class GLMTask.LBFGS_LogisticGradientTask

java.lang.Object

jsr166y.ForkJoinTask<java.lang.Void>

jsr166y.CountedCompleter

water.H2O.H2OCountedCompleter<T>

water.DTask<T>

water.MRTask<hex.glm.GLMTask.GLMGradientTask>

hex.glm.GLMTask.LBFGS_LogisticGradientTask

All Implemented Interfaces:

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

Enclosing class:

GLMTask

public static class GLMTask.LBFGS_LogisticGradientTask
extends water.MRTask<hex.glm.GLMTask.GLMGradientTask>

Tassk with simplified gradient computation for logistic regression (and least squares) Looks like

See Also:

Serialized Form

Nested Class Summary

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
protected DataInfo	_dinfo
double[]	_gradient
double	_likelihood
protected boolean[]	_skip

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, _modifiesInputs

Constructor Summary

Constructors

Constructor and Description
GLMTask.LBFGS_LogisticGradientTask(DataInfo dinfo, GLMModel.GLMParameters params, double lambda, double[] beta, double reg, water.fvec.Vec rowFilter)

Method Summary

Methods

Modifier and Type	Method and Description
protected double[]	computeEtaByCols(water.fvec.Chunk[] chks, boolean[] skip)
hex.glm.GLMTask.GLMGradientTask	forceColAccess()
hex.glm.GLMTask.GLMGradientTask	forceRowAccess()
protected void	goByCols(water.fvec.Chunk[] chks, boolean[] skp)
protected void	goByRows(water.fvec.Chunk[] chks, boolean[] skp)
void	map(water.fvec.Chunk[] chks)
void	postGlobal()
void	reduce(hex.glm.GLMTask.GLMGradientTask grt)
hex.glm.GLMTask.GLMGradientTask	setValidate(double ymu, boolean validate)

Methods inherited from class water.MRTask

appendables, asyncExec, asyncExec, asyncExec, block, closeLocal, compute2, dfork, dfork, dfork, dfork, dinvoke, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAll, doAllNodes, getResult, isReleasable, map, map, map, map, map, map, map, map, map, map, map, map, onCompletion, onExceptionalCompletion, outputFrame, outputFrame, outputFrame, postLocal, priority, profString, self, setProfile, setupLocal

Methods inherited from class water.DTask

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

Methods inherited from class water.H2O.H2OCountedCompleter

clone, compute, frozenType, icer, nextThrPriority, read_impl, read, readJSON_impl, readJSON, write_impl, write, writeHTML_impl, writeHTML, writeJSON_impl, writeJSON

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

_dinfo

protected final DataInfo _dinfo

_gradient

public double[] _gradient

_likelihood

public double _likelihood

_skip

protected transient boolean[] _skip

Constructor Detail

GLMTask.LBFGS_LogisticGradientTask

public GLMTask.LBFGS_LogisticGradientTask(DataInfo dinfo,
                                  GLMModel.GLMParameters params,
                                  double lambda,
                                  double[] beta,
                                  double reg,
                                  water.fvec.Vec rowFilter)

Method Detail

goByRows

protected void goByRows(water.fvec.Chunk[] chks,
            boolean[] skp)

goByCols

protected void goByCols(water.fvec.Chunk[] chks,
            boolean[] skp)

setValidate

public hex.glm.GLMTask.GLMGradientTask setValidate(double ymu,
                                          boolean validate)

postGlobal

public void postGlobal()

Overrides:

postGlobal in class water.MRTask<hex.glm.GLMTask.GLMGradientTask>

computeEtaByCols

protected final double[] computeEtaByCols(water.fvec.Chunk[] chks,
                        boolean[] skip)

forceColAccess

public hex.glm.GLMTask.GLMGradientTask forceColAccess()

forceRowAccess

public hex.glm.GLMTask.GLMGradientTask forceRowAccess()

map

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

Overrides:

map in class water.MRTask<hex.glm.GLMTask.GLMGradientTask>

reduce

public void reduce(hex.glm.GLMTask.GLMGradientTask grt)

Overrides:

reduce in class water.MRTask<hex.glm.GLMTask.GLMGradientTask>