edu.illinois.cs.cogcomp.chunker.main.lbjava

Class Chunker

java.lang.Object

edu.illinois.cs.cogcomp.lbjava.classify.Classifier

edu.illinois.cs.cogcomp.lbjava.learn.Learner

edu.illinois.cs.cogcomp.lbjava.learn.SparseNetworkLearner

edu.illinois.cs.cogcomp.chunker.main.lbjava.Chunker

All Implemented Interfaces:

Serializable, Cloneable

public class Chunker
extends edu.illinois.cs.cogcomp.lbjava.learn.SparseNetworkLearner

Learned classifier that predicts a BIO chunk tag given a word represented as a Token . PreviousTags from this package and POSWindow from the LBJ POS tagger package as well as Forms, Capitalization, WordTypeInformation, and Affixes from the LBJ library are used as features. This classifier caches its prediction in the Token.type field, and it will simply return the value of this field as its prediction if it is non-null.

Author:

Nick Rizzolo

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Chunker.Parameters

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	isTraining

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.learn.SparseNetworkLearner

baseLTU, conjunctiveLabels, defaultBaseLTU, network, numExamples, numFeatures

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.learn.Learner

candidates, encoding, extractor, labeler, labelLexicon, lcFilePath, lexFilePath, lexicon, lossFlag, predictions, readLexiconOnDemand

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.classify.Classifier

containingPackage, name

Constructor Summary

Constructors

Constructor and Description
Chunker()
Chunker(Chunker.Parameters p, String modelPath, String lexiconPath)
Chunker(ResourceManager config)
Chunker(String modelPath, String lexiconPath)

Method Summary

Modifier and Type	Method and Description
edu.illinois.cs.cogcomp.lbjava.classify.FeatureVector	classify(Object __example)
String	discreteValue(Object __example)
boolean	equals(Object o)
edu.illinois.cs.cogcomp.lbjava.classify.Feature	featureValue(Object __example)
String	getInputType()
String	getOutputType()
int	hashCode()

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.learn.SparseNetworkLearner

classify, clone, conjunctiveScores, conjunctiveValueOf, discreteValue, doneLearning, doneWithRound, featureValue, forget, getBaseLTU, getLTU, getNetwork, getNumExamples, getNumFeatures, getParameters, initialize, isUsingConjunctiveLabels, learn, read, scores, scores, scores, setConjunctiveLabels, setExtractor, setLabeler, setLTU, setNetworkLabel, setParameters, valueOf, valueOf, write, write

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.learn.Learner

classify, classify, classify, countFeatures, createPrediction, createPrediction, demandLexicon, discreteValue, emptyClone, featureValue, getCurrentLexicon, getExampleArray, getExampleArray, getExtractor, getLabeler, getLabelLexicon, getLexicon, getLexiconDiscardCounts, getLexiconLocation, getModelLocation, getPrunedLexiconSize, learn, learn, learn, learn, read, readLabelLexicon, readLearner, readLearner, readLearner, readLearner, readLearner, readLearner, readLexicon, readLexicon, readLexiconOnDemand, readLexiconOnDemand, readModel, readModel, readParameters, realValue, realValue, realValue, save, saveLexicon, saveModel, scores, scores, scoresAugmented, setCandidates, setEncoding, setLabelLexicon, setLexicon, setLexiconLocation, setLexiconLocation, setLossFlag, setModelLocation, setModelLocation, setParameters, setReadLexiconOnDemand, unclone, unsetLossFlag, write, writeLexicon, writeModel, writeParameters

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.classify.Classifier

allowableValues, classify, discreteValueArray, getCompositeChildren, realValueArray, test, toString, valueIndexOf

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

isTraining

public static boolean isTraining

Constructor Detail

Chunker

public Chunker()

Chunker

public Chunker(ResourceManager config)

Chunker

public Chunker(String modelPath,
               String lexiconPath)

Chunker

public Chunker(Chunker.Parameters p,
               String modelPath,
               String lexiconPath)

Method Detail

getInputType

public String getInputType()

Overrides:

getInputType in class edu.illinois.cs.cogcomp.lbjava.classify.Classifier

getOutputType

public String getOutputType()

Overrides:

getOutputType in class edu.illinois.cs.cogcomp.lbjava.classify.Classifier

classify

public edu.illinois.cs.cogcomp.lbjava.classify.FeatureVector classify(Object __example)

Overrides:

classify in class edu.illinois.cs.cogcomp.lbjava.learn.Learner

featureValue

public edu.illinois.cs.cogcomp.lbjava.classify.Feature featureValue(Object __example)

Overrides:

featureValue in class edu.illinois.cs.cogcomp.lbjava.learn.Learner

discreteValue

public String discreteValue(Object __example)

Overrides:

discreteValue in class edu.illinois.cs.cogcomp.lbjava.learn.Learner

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object