hivemall.xgboost.utils

Class DMatrixBuilder

java.lang.Object

hivemall.xgboost.utils.DMatrixBuilder

Direct Known Subclasses:

DenseDMatrixBuilder, SparseDMatrixBuilder

public abstract class DMatrixBuilder
extends Object

Constructor Summary

Constructors

Constructor and Description
DMatrixBuilder()

Method Summary

Modifier and Type	Method and Description
abstract ml.dmlc.xgboost4j.java.DMatrix	buildMatrix(float[] labels)
protected static void	checkColIndex(int col)
abstract DMatrixBuilder	nextColumn(int col, float value)
DMatrixBuilder	nextColumn(String col)
abstract DMatrixBuilder	nextRow()
void	nextRow(float[] row)
void	nextRow(String[] row)
void	nextRow(String[] row, int start, int endEx)

Methods inherited from class java.lang.Object

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

Constructor Detail

DMatrixBuilder

public DMatrixBuilder()

Method Detail

checkColIndex

protected static final void checkColIndex(int col)

nextRow

public void nextRow(@Nonnull
                    float[] row)

nextRow

public void nextRow(@Nonnull
                    String[] row)

nextRow

public void nextRow(@Nonnull
                    String[] row,
                    int start,
                    int endEx)

nextRow

@Nonnull
public abstract DMatrixBuilder nextRow()

nextColumn

@Nonnull
public abstract DMatrixBuilder nextColumn(@Nonnegative
                                                   int col,
                                                   float value)

nextColumn

@Nonnull
public DMatrixBuilder nextColumn(@Nonnull
                                          String col)

Throws:

IllegalArgumentException

NumberFormatException

buildMatrix

@Nonnull
public abstract ml.dmlc.xgboost4j.java.DMatrix buildMatrix(@Nonnull
                                                                    float[] labels)
                                                             throws ml.dmlc.xgboost4j.java.XGBoostError

Throws:

ml.dmlc.xgboost4j.java.XGBoostError