edu.umass.cs.mallet.base.fst
Class SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence

java.lang.Object
  extended byedu.umass.cs.mallet.base.pipe.Pipe
      extended byedu.umass.cs.mallet.base.fst.SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence
All Implemented Interfaces:
java.io.Serializable
Enclosing class:
SimpleTagger

public static class SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence
extends Pipe

Converts an external encoding of a sequence of elements with binary features to a FeatureVectorSequence. If target processing is on (training or labeled test data), it extracts element labels from the external encoding to create a target LabelSequence. Two external encodings are supported:

  1. A String containing lines of whitespace-separated tokens.
  2. a String[][].
Both represent rows of tokens. When target processing is on, the last token in each row is the label of the sequence element represented by this row. All other tokens in the row, or all tokens in the row if not target processing, are the names of features that are on for the sequence element described by the row.

See Also:
Serialized Form

Constructor Summary
SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence()
          Creates a new SimpleTaggerSentence2FeatureVectorSequence instance.
 
Method Summary
 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

SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence

public SimpleTagger.SimpleTaggerSentence2FeatureVectorSequence()
Creates a new SimpleTaggerSentence2FeatureVectorSequence instance.

Method Detail

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.