hex.glrm

Class GLRM

java.lang.Object

water.Iced

hex.ModelBuilder<GLRMModel,GLRMModel.GLRMParameters,GLRMModel.GLRMOutput>

hex.glrm.GLRM

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, water.Freezable

public class GLRM
extends hex.ModelBuilder<GLRMModel,GLRMModel.GLRMParameters,GLRMModel.GLRMOutput>

Generalized Low Rank Models This is an algorithm for dimensionality reduction of a dataset. It is a general, parallelized optimization algorithm that applies to a variety of loss and regularization functions. Categorical columns are handled by expansion into 0/1 indicator columns for each level. Generalized Low Rank Models

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	GLRM.Archetypes
static class	GLRM.Initialization

Nested classes/interfaces inherited from class hex.ModelBuilder

hex.ModelBuilder.BuilderVisibility, hex.ModelBuilder.Driver, hex.ModelBuilder.ValidationMessage

Field Summary

Fields inherited from class hex.ModelBuilder

_fold, _job, _messages, _nclass, _offset, _origDomains, _origNames, _parms, _priorClassDist, _removedCols, _response, _result, _train, _valid, _vresponse, _weights

Constructor Summary

Constructors

Constructor and Description
GLRM(boolean startup_once)
GLRM(GLRMModel.GLRMParameters parms)
GLRM(GLRMModel.GLRMParameters parms, water.Job job)

Method Summary

Methods

Modifier and Type	Method and Description
hex.ModelCategory[]	can_build()
protected static water.fvec.Chunk	chk_xnew(water.fvec.Chunk[] chks, int c, int ncolA, int ncolX)
protected static water.fvec.Chunk	chk_xold(water.fvec.Chunk[] chks, int c, int ncolA)
static double[][]	expandCats(double[][] sdata, DataInfo dinfo)
static double	frobenius2(double[][] x)
protected static int	idx_xnew(int c, int ncolA, int ncolX)
protected static int	idx_xold(int c, int ncolA)
void	init(boolean expensive)
protected hex.glrm.GLRM.GLRMDriver	trainModelImpl()
static double[][]	transform(double[][] centers, double[] normSub, double[] normMul, int ncats, int nnums)

Methods inherited from class hex.ModelBuilder

algoName, algos, builderVisibility, checkDistributions, checkMemoryFootPrint, clearInitState, clearValidationErrors, computeCrossValidation, computePriorClassDistribution, cv_AssignFold, cv_buildModels, cv_mainModelScores, cv_makeFramesAndBuilders, cv_makeWeights, cv_scoreCVModels, defaultKey, desiredChunks, dest, error_count, error, get, getToEigenVec, hasFoldCol, hasOffsetCol, hasWeightCol, hide, ignoreBadColumns, ignoreConstColumns, ignoreStringColumns, info, isClassifier, isStopped, isSupervised, javaName, logMe, make, message, modifyParmsForCrossValidationMainModel, nclasses, nFoldCV, nFoldWork, nModelsInParallel, numSpecialCols, paramName, rebalance, response, schemaDirectory, separateFeatureVecs, specialColNames, stop_requested, timeout, train, trainModel, trainModelNested, valid, validationErrors, vresponse, warn

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GLRM

public GLRM(GLRMModel.GLRMParameters parms)

GLRM

public GLRM(GLRMModel.GLRMParameters parms,
    water.Job job)

GLRM

public GLRM(boolean startup_once)

Method Detail

trainModelImpl

protected hex.glrm.GLRM.GLRMDriver trainModelImpl()

Specified by:

trainModelImpl in class hex.ModelBuilder<GLRMModel,GLRMModel.GLRMParameters,GLRMModel.GLRMOutput>

can_build

public hex.ModelCategory[] can_build()

Specified by:

can_build in class hex.ModelBuilder<GLRMModel,GLRMModel.GLRMParameters,GLRMModel.GLRMOutput>

init

public void init(boolean expensive)

Overrides:

init in class hex.ModelBuilder<GLRMModel,GLRMModel.GLRMParameters,GLRMModel.GLRMOutput>

frobenius2

public static double frobenius2(double[][] x)

transform

public static double[][] transform(double[][] centers,
                   double[] normSub,
                   double[] normMul,
                   int ncats,
                   int nnums)

expandCats

public static double[][] expandCats(double[][] sdata,
                    DataInfo dinfo)

idx_xold

protected static int idx_xold(int c,
           int ncolA)

idx_xnew

protected static int idx_xnew(int c,
           int ncolA,
           int ncolX)

chk_xold

protected static water.fvec.Chunk chk_xold(water.fvec.Chunk[] chks,
                        int c,
                        int ncolA)

chk_xnew

protected static water.fvec.Chunk chk_xnew(water.fvec.Chunk[] chks,
                        int c,
                        int ncolA,
                        int ncolX)