edu.umass.cs.mallet.base.pipe
Class TokenSequence2FeatureSequenceWithBigrams

java.lang.Object
  extended byedu.umass.cs.mallet.base.pipe.Pipe
      extended byedu.umass.cs.mallet.base.pipe.TokenSequence2FeatureSequenceWithBigrams
All Implemented Interfaces:
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.

See Also:
Serialized Form

Constructor Summary
TokenSequence2FeatureSequenceWithBigrams()
           
TokenSequence2FeatureSequenceWithBigrams(Alphabet dataDict)
           
 
Method Summary
 Alphabet getBigramAlphabet()
           
 Instance pipe(Instance carrier)
          Process an Instance.
 
Methods inherited from class edu.umass.cs.mallet.base.pipe.Pipe
getDataAlphabet, getInstanceId, getParent, getParentRoot, getTargetAlphabet, isDataAlphabetSet, isTargetProcessing, pipe, readResolve, resolveDataAlphabet, resolveTargetAlphabet, setDataAlphabet, setParent, 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)

TokenSequence2FeatureSequenceWithBigrams

public TokenSequence2FeatureSequenceWithBigrams()
Method Detail

getBigramAlphabet

public Alphabet getBigramAlphabet()

pipe

public Instance pipe(Instance carrier)
Description copied from class: Pipe
Process an Instance. This method takes an input Instance, destructively modifies it in some way, and returns it. This is the method by which all pipes are eventually run.

One can create a new concrete subclass of Pipe simply by implementing this method.

Specified by:
pipe in class Pipe
Parameters:
carrier - Instance to be processed.