opennlp.tools.ml.model

Class OnePassRealValueDataIndexer

java.lang.Object

opennlp.tools.ml.model.AbstractDataIndexer

opennlp.tools.ml.model.OnePassDataIndexer

opennlp.tools.ml.model.OnePassRealValueDataIndexer

All Implemented Interfaces:

DataIndexer

public class OnePassRealValueDataIndexer
extends OnePassDataIndexer

An indexer for maxent model data which handles cutoffs for uncommon contextual predicates and provides a unique integer index for each of the predicates and maintains event values.

Constructor Summary

Constructors

Constructor and Description
OnePassRealValueDataIndexer(ObjectStream<Event> eventStream, int cutoff) Two argument constructor for DataIndexer.
OnePassRealValueDataIndexer(ObjectStream<Event> eventStream, int cutoff, boolean sort)

Method Summary

Methods

Modifier and Type	Method and Description
float[][]	getValues() Returns the values associated with each event context or null if integer values are to be used.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

OnePassRealValueDataIndexer

public OnePassRealValueDataIndexer(ObjectStream<Event> eventStream,
                           int cutoff,
                           boolean sort)
                            throws IOException

Throws:

IOException

OnePassRealValueDataIndexer

public OnePassRealValueDataIndexer(ObjectStream<Event> eventStream,
                           int cutoff)
                            throws IOException

Two argument constructor for DataIndexer.

Parameters:

eventStream - An Event[] which contains the a list of all the Events seen in the training data.

cutoff - The minimum number of times a predicate must have been observed in order to be included in the model.

Throws:

IOException

Method Detail

getValues

public float[][] getValues()

Description copied from interface: DataIndexer

Returns the values associated with each event context or null if integer values are to be used.

Specified by:

getValues in interface DataIndexer

Overrides:

getValues in class AbstractDataIndexer

Returns:

the values associated with each event context.