opennlp.model
Class OnePassRealValueDataIndexer

java.lang.Object
  opennlp.model.AbstractDataIndexer
      opennlp.model.OnePassDataIndexer
          opennlp.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

OnePassRealValueDataIndexer(EventStream eventStream, int cutoff)
Two argument constructor for DataIndexer.

OnePassRealValueDataIndexer(EventStream eventStream, int cutoff, boolean sort)

Method Summary

float[][]

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

Methods inherited from class opennlp.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(EventStream eventStream,
                                   int cutoff,
                                   boolean sort)
                            throws IOException

Throws:

IOException

OnePassRealValueDataIndexer

public OnePassRealValueDataIndexer(EventStream 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.