hex.glm

Class GLMTask.GLMLineSearchTask

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.GLMLineSearchTask>

hex.glm.GLMTask.GLMLineSearchTask

All Implemented Interfaces:

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

Enclosing class:

GLMTask<T extends GLMTask<T>>

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

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, GLMTask.GLMLineSearchTask, GLMTask.LMIterationTask

Nested classes/interfaces inherited from class hex.FrameTask

FrameTask.DataInfo

Field Summary

Fields inherited from class hex.glm.GLMTask

_glm

Fields inherited from class hex.FrameTask

_dinfo, _shuffle, _useFraction

Fields inherited from class water.MRTask2

_appendables, _fr, _fs, _hi, _left, _lo, _nhi, _nleft, _nrite, _nxx, _rite, _t0, _topLocal

Fields inherited from class water.DTask

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

Constructor Summary

Constructors

Constructor and Description
GLMTask.GLMLineSearchTask(Job job, FrameTask.DataInfo dinfo, GLMParams glm, double[] oldBeta, double[] newBeta, double minStep, long nobs, double alpha, double lambda, H2O.H2OCountedCompleter cmp)

Method Summary

Methods

Modifier and Type	Method and Description
void	chunkDone() Override this to do post-chunk processing work.
void	chunkInit() Override this to initialize at the beginning of chunk processing.
void	postGlobal()
void	processRow(long gid, double[] nums, int ncats, int[] cats, double[] responses) Method to process one row of the data for GLM functions.
void	reduce(GLMTask.GLMLineSearchTask git) Override to combine results from 'mrt' into 'this' MRTask2.

Methods inherited from class hex.glm.GLMTask

computeEta

Methods inherited from class hex.FrameTask

dfork, map, normMul, normRespMul, normRespSub, normSub, processRow

Methods inherited from class water.MRTask2

asyncExec, asyncExec, asyncExec, block, clone, closeLocal, compute2, dfork, dfork, dfork, dinvoke, doAll, doAll, doAll, doAll, doAll, doAll, exec, exec, exec, getResult, isReleasable, map, map, map, map, map, map, map, map, map, map, map, onCompletion, onExceptionalCompletion, outputFrame, outputFrame, outputFrame, priority, 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

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.GLMLineSearchTask

public GLMTask.GLMLineSearchTask(Job job,
                         FrameTask.DataInfo dinfo,
                         GLMParams glm,
                         double[] oldBeta,
                         double[] newBeta,
                         double minStep,
                         long nobs,
                         double alpha,
                         double lambda,
                         H2O.H2OCountedCompleter cmp)

Method Detail

chunkInit

public void chunkInit()

Description copied from class: FrameTask

Override this to initialize at the beginning of chunk processing.

Overrides:

chunkInit in class FrameTask<GLMTask.GLMLineSearchTask>

chunkDone

public void chunkDone()

Description copied from class: FrameTask

Override this to do post-chunk processing work.

Overrides:

chunkDone in class FrameTask<GLMTask.GLMLineSearchTask>

postGlobal

public void postGlobal()

Overrides:

postGlobal in class MRTask2<GLMTask.GLMLineSearchTask>

processRow

public final void processRow(long gid,
              double[] nums,
              int ncats,
              int[] cats,
              double[] responses)

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.GLMLineSearchTask>

Parameters:

gid - - global id of this row, in [0,_adaptedFrame.numRows())

nums - - numeric values of this row

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

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

responses - - numeric value for the response

reduce

public void reduce(GLMTask.GLMLineSearchTask 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.GLMLineSearchTask>