cc.mallet.pipe
Class CharSequence2CharNGrams

java.lang.Object
  cc.mallet.pipe.Pipe
      cc.mallet.pipe.CharSequence2CharNGrams

All Implemented Interfaces:

AlphabetCarrying, java.io.Serializable

public class CharSequence2CharNGrams
extends Pipe
implements java.io.Serializable

Transform a character sequence into a token sequence of character N grams.

Author:

Andrew McCallum mccallum@cs.umass.edu

See Also:

Serialized Form

Constructor Summary

CharSequence2CharNGrams(int n, boolean distinguishBorders)

Method Summary

protected java.lang.String[]	ngramify(java.lang.CharSequence s)
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

CharSequence2CharNGrams

public CharSequence2CharNGrams(int n,
                               boolean distinguishBorders)

Method Detail

ngramify

protected java.lang.String[] ngramify(java.lang.CharSequence s)

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