opennlp.tools.ml.maxent.quasinewton

Class QNTrainer

java.lang.Object

opennlp.tools.ml.AbstractTrainer

opennlp.tools.ml.AbstractEventTrainer

opennlp.tools.ml.maxent.quasinewton.QNTrainer

All Implemented Interfaces:

EventTrainer

public class QNTrainer
extends AbstractEventTrainer

Maxent model trainer using L-BFGS algorithm.

Field Summary

Fields

Modifier and Type	Field and Description
static double	L1COST_DEFAULT
static String	L1COST_PARAM
static double	L2COST_DEFAULT
static String	L2COST_PARAM
static int	M_DEFAULT
static String	M_PARAM
static int	MAX_FCT_EVAL_DEFAULT
static String	MAX_FCT_EVAL_PARAM
static String	MAXENT_QN_VALUE
static int	THREADS_DEFAULT
static String	THREADS_PARAM

Fields inherited from class opennlp.tools.ml.AbstractEventTrainer

DATA_INDEXER_ONE_PASS_VALUE, DATA_INDEXER_PARAM, DATA_INDEXER_TWO_PASS_VALUE

Fields inherited from class opennlp.tools.ml.AbstractTrainer

ALGORITHM_PARAM, CUTOFF_DEFAULT, CUTOFF_PARAM, ITERATIONS_DEFAULT, ITERATIONS_PARAM, TRAINER_TYPE_PARAM

Fields inherited from interface opennlp.tools.ml.EventTrainer

EVENT_VALUE

Constructor Summary

Constructors

Constructor and Description
QNTrainer()
QNTrainer(boolean verbose)
QNTrainer(int m)
QNTrainer(int m, boolean verbose)
QNTrainer(int m, int maxFctEval, boolean verbose)

Method Summary

Methods

Modifier and Type	Method and Description
AbstractModel	doTrain(DataIndexer indexer)
boolean	isSortAndMerge()
boolean	isValid()
QNModel	trainModel(int iterations, DataIndexer indexer)

Methods inherited from class opennlp.tools.ml.AbstractEventTrainer

getDataIndexer, train

Methods inherited from class opennlp.tools.ml.AbstractTrainer

getAlgorithm, getCutoff, getIterations, init

Methods inherited from class java.lang.Object

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

Methods inherited from interface opennlp.tools.ml.EventTrainer

init

Field Detail

MAXENT_QN_VALUE

public static final String MAXENT_QN_VALUE

See Also:

Constant Field Values

THREADS_PARAM

public static final String THREADS_PARAM

See Also:

Constant Field Values

THREADS_DEFAULT

public static final int THREADS_DEFAULT

See Also:

Constant Field Values

L1COST_PARAM

public static final String L1COST_PARAM

See Also:

Constant Field Values

L1COST_DEFAULT

public static final double L1COST_DEFAULT

See Also:

Constant Field Values

L2COST_PARAM

public static final String L2COST_PARAM

See Also:

Constant Field Values

L2COST_DEFAULT

public static final double L2COST_DEFAULT

See Also:

Constant Field Values

M_PARAM

public static final String M_PARAM

See Also:

Constant Field Values

M_DEFAULT

public static final int M_DEFAULT

See Also:

Constant Field Values

MAX_FCT_EVAL_PARAM

public static final String MAX_FCT_EVAL_PARAM

See Also:

Constant Field Values

MAX_FCT_EVAL_DEFAULT

public static final int MAX_FCT_EVAL_DEFAULT

See Also:

Constant Field Values

Constructor Detail

QNTrainer

public QNTrainer(boolean verbose)

QNTrainer

public QNTrainer(int m)

QNTrainer

public QNTrainer(int m,
         boolean verbose)

QNTrainer

public QNTrainer(int m,
         int maxFctEval,
         boolean verbose)

QNTrainer

public QNTrainer()

Method Detail

isValid

public boolean isValid()

Overrides:

isValid in class AbstractEventTrainer

isSortAndMerge

public boolean isSortAndMerge()

Specified by:

isSortAndMerge in class AbstractEventTrainer

doTrain

public AbstractModel doTrain(DataIndexer indexer)
                      throws IOException

Specified by:

doTrain in class AbstractEventTrainer

Throws:

IOException

trainModel

public QNModel trainModel(int iterations,
                 DataIndexer indexer)