Package opennlp.tools.ml.model

Class OnePassDataIndexer

java.lang.Object

opennlp.tools.ml.model.AbstractDataIndexer

opennlp.tools.ml.model.OnePassDataIndexer

All Implemented Interfaces:

DataIndexer

Direct Known Subclasses:

OnePassRealValueDataIndexer

public class OnePassDataIndexer
extends AbstractDataIndexer

A DataIndexer for maxent model data which handles cutoffs for uncommon contextual predicates and provides a unique integer index for each of the predicates.

See Also:

• DataIndexer
• AbstractDataIndexer

Field Summary

Fields inherited from class opennlp.tools.ml.model.AbstractDataIndexer

CUTOFF_DEFAULT, CUTOFF_PARAM, SORT_DEFAULT, SORT_PARAM

Constructor Summary

Constructors

Constructor	Description
OnePassDataIndexer()

Method Summary

Modifier and Type	Method	Description
void	index(ObjectStream<Event> eventStream)	Performs the data indexing.

Methods inherited from class opennlp.tools.ml.model.AbstractDataIndexer

getContexts, getNumEvents, getNumTimesEventsSeen, getOutcomeLabels, getOutcomeList, getPredCounts, getPredLabels, getValues, init

Methods inherited from class java.lang.Object

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

Constructor Details

OnePassDataIndexer

public OnePassDataIndexer()

Method Details

index

public void index(ObjectStream<Event> eventStream)
           throws IOException

Performs the data indexing.

Note: Make sure the DataIndexer.init(TrainingParameters, Map) method is called first.

Parameters:

eventStream - A ObjectStream<Event> of events used as input.

Throws:

IOException - Thrown if IO errors occurred during indexing.