cc.mallet.share.upenn.ner
Class LengthBins

java.lang.Object
  cc.mallet.pipe.Pipe
      cc.mallet.share.upenn.ner.LengthBins

All Implemented Interfaces:

AlphabetCarrying, java.io.Serializable

public class LengthBins
extends Pipe
implements java.io.Serializable

A feature approximating string length.

See Also:

Serialized Form

Constructor Summary

LengthBins(java.lang.String featureName, int[] binMaxes)
bins contains the maximum sizes of elements in each bin.

Method Summary

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

LengthBins

public LengthBins(java.lang.String featureName,
                  int[] binMaxes)

bins contains the maximum sizes of elements in each bin.

For example, passing in {1,3,7} would produce 4 bins, for strings of lengths 1, 2-3, 4-7, and 8+.

Method Detail

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