edu.umass.cs.mallet.base.pipe.tsf

Class FeaturesInWindow

java.lang.Object

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

edu.umass.cs.mallet.base.pipe.tsf.FeaturesInWindow

All Implemented Interfaces:

Serializable

public class FeaturesInWindow
extends Pipe
implements Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FeaturesInWindow(String namePrefix, int leftBoundaryOffset, int rightBoundaryOffset) equivalent to FeaturesInWindow((namePrefix, leftBoundaryOffset, rightBoundaryOffset, null, true);
FeaturesInWindow(String namePrefix, int leftBoundaryOffset, int rightBoundaryOffset, Pattern featureRegex, boolean includeBeginEndBoundaries)

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

FeaturesInWindow

public FeaturesInWindow(String namePrefix,
                        int leftBoundaryOffset,
                        int rightBoundaryOffset,
                        Pattern featureRegex,
                        boolean includeBeginEndBoundaries)

Parameters:

namePrefix - what to prepend to feature names

leftBoundaryOffset - left boundary of the window (e.g. -1 means include the previous word

rightBoundaryOffset - right boundary for this window (e.g. 1 means include the current position, but not the next

featureRegex - add only for features matching this (null = always match

includeBeginEndBoundaries - ignored

FeaturesInWindow

public FeaturesInWindow(String namePrefix,
                        int leftBoundaryOffset,
                        int rightBoundaryOffset)

equivalent to
FeaturesInWindow((namePrefix, leftBoundaryOffset, rightBoundaryOffset, null, true);

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.