opennlp.tools.postag

Class POSSampleEventStream

java.lang.Object

opennlp.model.AbstractEventStream

opennlp.tools.util.AbstractEventStream<POSSample>

opennlp.tools.postag.POSSampleEventStream

All Implemented Interfaces:

EventStream

public class POSSampleEventStream
extends AbstractEventStream<POSSample>

This class reads the POSSamples from the given Iterator and converts the POSSamples into Events which can be used by the maxent library for training.

Constructor Summary

Constructors

Constructor and Description
POSSampleEventStream(ObjectStream<POSSample> samples) Initializes the current instance with given samples and a DefaultPOSContextGenerator.
POSSampleEventStream(ObjectStream<POSSample> samples, POSContextGenerator cg) Initializes the current instance with the given samples and the given POSContextGenerator.

Method Summary

Modifier and Type	Method and Description
protected Iterator<Event>	createEvents(POSSample sample) Creates events for the provided sample.
static List<Event>	generateEvents(String[] sentence, String[] tags, Object[] additionalContext, POSContextGenerator cg)
static List<Event>	generateEvents(String[] sentence, String[] tags, POSContextGenerator cg)

Methods inherited from class opennlp.tools.util.AbstractEventStream

hasNext, next

Methods inherited from class opennlp.model.AbstractEventStream

remove

Methods inherited from class java.lang.Object

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

Constructor Detail

POSSampleEventStream

public POSSampleEventStream(ObjectStream<POSSample> samples,
                            POSContextGenerator cg)

Initializes the current instance with the given samples and the given POSContextGenerator.

Parameters:

samples -

cg -

POSSampleEventStream

public POSSampleEventStream(ObjectStream<POSSample> samples)

Initializes the current instance with given samples and a DefaultPOSContextGenerator.

Parameters:

samples -

Method Detail

createEvents

protected Iterator<Event> createEvents(POSSample sample)

Description copied from class: AbstractEventStream

Creates events for the provided sample.

Specified by:

createEvents in class AbstractEventStream<POSSample>

Parameters:

sample - the sample for which training Events are be created.

Returns:

an Iterator of training events or an empty Iterator.

generateEvents

public static List<Event> generateEvents(String[] sentence,
                                         String[] tags,
                                         Object[] additionalContext,
                                         POSContextGenerator cg)

generateEvents

public static List<Event> generateEvents(String[] sentence,
                                         String[] tags,
                                         POSContextGenerator cg)