org.maochen.nlp.app.chunker

Class ChunkerFeatureExtractor

java.lang.Object

org.maochen.nlp.app.chunker.ChunkerFeatureExtractor

public class ChunkerFeatureExtractor
extends Object

Chunking with Maximum Entropy Models. http://www.cnts.ua.ac.be/conll2000/pdf/13941koe.pdf

Created by Maochen on 11/10/15.

Constructor Summary

Constructors

Constructor and Description
ChunkerFeatureExtractor()

Method Summary

Modifier and Type	Method and Description
static List<Tuple>	extract(Set<SequenceTuple> trainingData) pos is in the extra feats, key is word id.
static List<Tuple>	extractFeat(SequenceTuple entry) Single SequenceTuple featExtractor
static Set<String>	extractFeatSingle(int i, String[] tokens, String[] pos, String[] resolvedPrevTags)

Methods inherited from class java.lang.Object

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

Constructor Detail

ChunkerFeatureExtractor

public ChunkerFeatureExtractor()

Method Detail

extractFeatSingle

public static Set<String> extractFeatSingle(int i,
                                            String[] tokens,
                                            String[] pos,
                                            String[] resolvedPrevTags)

extractFeat

public static List<Tuple> extractFeat(SequenceTuple entry)

Single SequenceTuple featExtractor

extract

public static List<Tuple> extract(Set<SequenceTuple> trainingData)

pos is in the extra feats, key is word id. return list only for compatible with MaxEnt interface. Not necessary to be list in logic.