Package cc.mallet.pipe

Class TokenSequence2FeatureSequenceWithBigrams

java.lang.Object

cc.mallet.pipe.Pipe

cc.mallet.pipe.TokenSequence2FeatureSequenceWithBigrams

All Implemented Interfaces:

AlphabetCarrying, java.io.Serializable

public class TokenSequence2FeatureSequenceWithBigrams
extends Pipe

Convert the token sequence in the data field of each instance to a feature sequence that preserves bigram information.

Author:

Andrew McCallum mccallum@cs.umass.edu

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
TokenSequence2FeatureSequenceWithBigrams()
TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict)
TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict, Alphabet bigramAlphabet)

Method Summary

Modifier and Type	Method	Description
Alphabet	getBigramAlphabet()
Instance	pipe(Instance carrier)	Really this should be 'protected', but isn't for historical reasons.

Methods inherited from class cc.mallet.pipe.Pipe

alphabetsMatch, getAlphabet, getAlphabets, getDataAlphabet, getInstanceId, getTargetAlphabet, instanceFrom, instancesFrom, instancesFrom, isDataAlphabetSet, isTargetProcessing, newIteratorFrom, preceedingPipeDataAlphabetNotification, preceedingPipeTargetAlphabetNotification, precondition, readResolve, setDataAlphabet, setOrCheckDataAlphabet, setOrCheckTargetAlphabet, setTargetAlphabet, setTargetProcessing

Methods inherited from class java.lang.Object

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

Constructor Detail

TokenSequence2FeatureSequenceWithBigrams

public TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict,
                                                Alphabet bigramAlphabet)

TokenSequence2FeatureSequenceWithBigrams

public TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict)

TokenSequence2FeatureSequenceWithBigrams

public TokenSequence2FeatureSequenceWithBigrams()

Method Detail

getBigramAlphabet

public Alphabet getBigramAlphabet()

pipe

public Instance pipe(Instance carrier)

Description copied from class: Pipe

Really this should be 'protected', but isn't for historical reasons.

Overrides:

pipe in class Pipe