cc.mallet.pipe
Class TokenSequence2FeatureSequenceWithBigrams

java.lang.Object
  extended by cc.mallet.pipe.Pipe
      extended by 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
TokenSequence2FeatureSequenceWithBigrams()
           
TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict)
           
TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict, Alphabet bigramAlphabet)
           
 
Method Summary
 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