edu.illinois.cs.cogcomp.lbj.coref.decoders
Class CorefDecoder

java.lang.Object
  edu.illinois.cs.cogcomp.lbj.coref.decoders.DecoderWithOptions<ST>
      edu.illinois.cs.cogcomp.lbj.coref.decoders.ChainSolutionDecoder<ChainSolution<Mention>,Mention,CExample>
          edu.illinois.cs.cogcomp.lbj.coref.decoders.CorefDecoder

All Implemented Interfaces:

SolutionDecoder<ChainSolution<Mention>>, java.io.Serializable

Direct Known Subclasses:

ScoredCorefDecoder

public abstract class CorefDecoder
extends ChainSolutionDecoder<ChainSolution<Mention>,Mention,CExample>
implements java.io.Serializable

Translates coreference decisions to a ChainSolution via the decode method. Accepts a classifier that determines coreference of CExample objects by returning "true" or "false". Any parameters of the classifier should be set before constructing. For compatibility with code that loads dynamically (such as the GUI), subclasses should provide a constructor that takes just a Classifier. Exception: Classes that need more specific inputs to function may omit this constructor, provided they comply with the subclass constructor requirements. (Currently, see ScoredCorefDecoder).

Author:

Eric Bengtson

See Also:

Serialized Form

Field Summary

protected LBJ2.classify.Classifier	m_classifier The default classifier
private static long	serialVersionUID

Fields inherited from class edu.illinois.cs.cogcomp.lbj.coref.decoders.DecoderWithOptions

m_options, m_train

Constructor Summary

CorefDecoder(LBJ2.classify.Classifier c)
Construct a coreference decoder that uses a single classifier.

Method Summary

LBJ2.classify.Classifier	getClassifier() Gets the coreference classifier.
protected boolean	predictedCoreferential(CExample ex) Indicates whether the member classifier considers the example to be coreferential.
void	setClassifier(LBJ2.classify.Classifier classifier) Sets the coreference classifier.

Methods inherited from class edu.illinois.cs.cogcomp.lbj.coref.decoders.ChainSolutionDecoder

decode, getStatsString

Methods inherited from class edu.illinois.cs.cogcomp.lbj.coref.decoders.DecoderWithOptions

getBooleanOption, getOption, getRealOption, processOption, setOption, setOption, setOption, setTrain

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

m_classifier

protected LBJ2.classify.Classifier m_classifier

The default classifier

Constructor Detail

CorefDecoder

public CorefDecoder(LBJ2.classify.Classifier c)

Construct a coreference decoder that uses a single classifier.

Parameters:

c - A classifier that takes CExamples and returns a "true" or "false". Any parameters (such as any threshold) are assumed to have been set.

Method Detail

getClassifier

public LBJ2.classify.Classifier getClassifier()

Gets the coreference classifier.

Returns:

The classifier.

setClassifier

public void setClassifier(LBJ2.classify.Classifier classifier)

Sets the coreference classifier.

Parameters:

classifier - The classifier.

predictedCoreferential

protected boolean predictedCoreferential(CExample ex)

Indicates whether the member classifier considers the example to be coreferential. Override to modify coreference behavior to use other decision strategies.

Parameters:

ex - The example whose coreference should be determined.

Returns:

Whether the example is coreferential.