edu.illinois.cs.cogcomp.lbjava.nlp

Class POSBracketToVector

java.lang.Object

edu.illinois.cs.cogcomp.lbjava.parse.LineByLine

edu.illinois.cs.cogcomp.lbjava.nlp.POSBracketToVector

All Implemented Interfaces:

edu.illinois.cs.cogcomp.lbjava.parse.Parser

Direct Known Subclasses:

POSBracketToToken, POSBracketToWord

public class POSBracketToVector
extends edu.illinois.cs.cogcomp.lbjava.parse.LineByLine

Use this parser to return LinkedVector objects representing sentences given file names of POS bracket form files to parse. These files are expected to have one sentence per line, and the format of each line is as follows:

(pos1 spelling1) (pos2 spelling2) ... (posN spellingN)

It is also expected that there will be exactly one space between a part of speech and the corresponding spelling and between a closing parenthesis and an opening parenthesis.

Author:

Nick Rizzolo

Field Summary

Fields inherited from class edu.illinois.cs.cogcomp.lbjava.parse.LineByLine

fileName, in

Constructor Summary

Constructors

Constructor and Description
POSBracketToVector(String file) Creates the parser.

Method Summary

Modifier and Type	Method and Description
Object	next() Retrieves the next LinkedVector from the files being parsed.
static edu.illinois.cs.cogcomp.lbjava.parse.LinkedVector	parsePOSBracketForm(String line) Given a single line of textual input (containing all and only the words in a single sentence) in the format shown above, this method parses and returns a LinkedVector.
static Word	parsePOSBracketForm(String text, Word previous) Given textual input in the format shown below, this method parses and returns the Word that the text represents.

Methods inherited from class edu.illinois.cs.cogcomp.lbjava.parse.LineByLine

close, readLine, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

POSBracketToVector

public POSBracketToVector(String file)

Creates the parser.

Parameters:

file - The file to parse.

Method Detail

next

public Object next()

Retrieves the next LinkedVector from the files being parsed.

parsePOSBracketForm

public static edu.illinois.cs.cogcomp.lbjava.parse.LinkedVector parsePOSBracketForm(String line)

Given a single line of textual input (containing all and only the words in a single sentence) in the format shown above, this method parses and returns a LinkedVector.

Parameters:

line - A single line of text.

Returns:

A LinkedVector representing the input text.

parsePOSBracketForm

public static Word parsePOSBracketForm(String text,
                                       Word previous)

Given textual input in the format shown below, this method parses and returns the Word that the text represents. Expected format:

(pos spelling)

Parameters:

text - Text representing a word in POS bracket form.

previous - The word that came before this word in the sentence.

Returns:

A Word represented by the input text or null if the input does not represent a Word.