edu.stanford.nlp.wordseg

Class Sighan2005DocumentReaderAndWriter

java.lang.Object

edu.stanford.nlp.wordseg.Sighan2005DocumentReaderAndWriter

All Implemented Interfaces:

IteratorFromReaderFactory<List<CoreLabel>>, DocumentReaderAndWriter<CoreLabel>, LatticeWriter<CoreLabel,String,Integer>, Serializable

public class Sighan2005DocumentReaderAndWriter
extends Object
implements DocumentReaderAndWriter<CoreLabel>, LatticeWriter<CoreLabel,String,Integer>

DocumentReader for Chinese segmentation task. (Sighan bakeoff 2005) Reads in characters and labels them as 1 or 0 (word START or NONSTART).

Note: maybe this can do less interning, since some is done in ObjectBankWrapper, but this also calls trim() as it works....

Author:

Pi-Chuan Chang, Michel Galley (Viterbi seearch graph printing)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Sighan2005DocumentReaderAndWriter()

Method Summary

Modifier and Type	Method and Description
Iterator<List<CoreLabel>>	getIterator(Reader r) Return an iterator over the contents read from r.
void	init(SeqClassifierFlags flags) This will be called immediately after construction.
void	printAnswers(List<CoreLabel> doc, PrintWriter pw) This method prints the output of the classifier to a PrintWriter.
void	printLattice(DFSA<String,Integer> tagLattice, List<CoreLabel> doc, PrintWriter out) This method prints the output lattice (typically, Viterbi search graph) of the classifier to a PrintWriter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Sighan2005DocumentReaderAndWriter

public Sighan2005DocumentReaderAndWriter()

Method Detail

getIterator

public Iterator<List<CoreLabel>> getIterator(Reader r)

Description copied from interface: IteratorFromReaderFactory

Return an iterator over the contents read from r.

Specified by:

getIterator in interface IteratorFromReaderFactory<List<CoreLabel>>

Parameters:

r - Where to read objects from

Returns:

An Iterator over the objects

init

public void init(SeqClassifierFlags flags)

Description copied from interface: DocumentReaderAndWriter

This will be called immediately after construction. It's easier having an init() method because DocumentReaderAndWriter objects are usually created using reflection.

Specified by:

init in interface DocumentReaderAndWriter<CoreLabel>

Parameters:

flags - Flags specifying behavior

printAnswers

public void printAnswers(List<CoreLabel> doc,
                         PrintWriter pw)

Description copied from interface: DocumentReaderAndWriter

This method prints the output of the classifier to a PrintWriter.

Specified by:

printAnswers in interface DocumentReaderAndWriter<CoreLabel>

Parameters:

doc - The document which has answers (it has been classified)

pw - Where to send the output

printLattice

public void printLattice(DFSA<String,Integer> tagLattice,
                         List<CoreLabel> doc,
                         PrintWriter out)

Description copied from interface: LatticeWriter

This method prints the output lattice (typically, Viterbi search graph) of the classifier to a PrintWriter.

Specified by:

printLattice in interface LatticeWriter<CoreLabel,String,Integer>