edu.umass.cs.mallet.base.pipe

Class Noop

java.lang.Object

edu.umass.cs.mallet.base.pipe.Pipe

edu.umass.cs.mallet.base.pipe.Noop

All Implemented Interfaces:

Serializable

public class Noop
extends Pipe
implements Serializable

A pipe that does nothing to the instance fields but which has side effects on the dictionary.

Author:

Andrew McCallum mccallum@cs.umass.edu

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Noop()
Noop(Alphabet dataDict, Alphabet targetDict)
Noop(Class dataDictClass, Class targetDictClass) Pass through input without change, but force the creation of Alphabet's, so it can be shared by future DictionariedPipe's.

Method Summary

Modifier and Type	Method and Description
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

Noop

public Noop()

Noop

public Noop(Class dataDictClass,
            Class targetDictClass)

Pass through input without change, but force the creation of Alphabet's, so it can be shared by future DictionariedPipe's. You might want to use this before ParallelPipes where the previous pipes do not need dictionaries, but later steps in each parallel path do, and they all must share the same dictionary.

Noop

public Noop(Alphabet dataDict,
            Alphabet targetDict)

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.