edu.illinois.cs.cogcomp.lbjava.nlp

Class Word

java.lang.Object

edu.illinois.cs.cogcomp.lbjava.parse.LinkedChild

edu.illinois.cs.cogcomp.lbjava.nlp.Word

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

NEWord, Token

public class Word
extends edu.illinois.cs.cogcomp.lbjava.parse.LinkedChild

Implementation of a word for natural language processing. Please note that in general, one can only count on the form and capitalized fields described below having meaningful values. The form field can be assumed to be filled in because it's hard to imagine a situation in which a Word object should be created without any knowledge of how that word appeared in text. The capitalized field is computed from the form by this class' constructor.

All other fields must be obtained or computed externally. Space is provided for them in this class' implementation as a convenience, since we expect the user will make frequent use of these fields.

This class extends from LinkedChild. Of course, this means that objects of this class contain references to both the previous and the next word in the sentence. Constructors are available that take the previous word as an argument, setting that reference. Thus, a useful technique for constructing all the words in a sentence will involve code that looks like this (where form is a String):

Word current = new Word(form);
a loop of some sort
{
current.next = new Word(form, current);
current = current.next;
}


Author:

Nick Rizzolo

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
boolean	capitalized Whether or not the word is capitalized is determined automatically by the constructor.
String	form The actual text from the corpus that represents the word.
String	lemma The base form of the word.
String	partOfSpeech Names the part of speech of this word.
String	wordSense An indication of the meaning or usage of this instance of this word.

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

end, label, next, parent, previous, start

Constructor Summary

Constructors

Constructor and Description
Word(String f) When all that is known is the spelling of the word.
Word(String f, int start, int end) When you have offset information.
Word(String f, String pos) Sets the actual text and the part of speech.
Word(String f, String pos, int start, int end) When you have offset information.
Word(String f, String pos, String l, String sense, Word p, int start, int end) This constructor is useful when the sentence is being parsed forwards.
Word(String f, String pos, Word p) This constructor is useful when the sentence is being parsed forwards.
Word(String f, String pos, Word p, int start, int end) This constructor is useful when the sentence is being parsed forwards.
Word(String f, Word p) This constructor is useful when the sentence is being parsed forwards.
Word(String f, Word p, int start, int end) This constructor is useful when the sentence is being parsed forwards.

Method Summary

Modifier and Type	Method and Description
String	toString() The string representation of a word is its POS bracket form, or, if the part of speech is not available, it is just the spelling of the word.

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

clone

Methods inherited from class java.lang.Object

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

Field Detail

form

public String form

The actual text from the corpus that represents the word.

capitalized

public boolean capitalized

Whether or not the word is capitalized is determined automatically by the constructor.

partOfSpeech

public String partOfSpeech

Names the part of speech of this word.

lemma

public String lemma

The base form of the word.

wordSense

public String wordSense

An indication of the meaning or usage of this instance of this word.

Constructor Detail

Word

public Word(String f)

When all that is known is the spelling of the word.

Parameters:

f - The actual text of the word.

Word

public Word(String f,
            String pos)

Sets the actual text and the part of speech.

Parameters:

f - The actual text of the word.

pos - A token representing the word's part of speech.

Word

public Word(String f,
            Word p)

This constructor is useful when the sentence is being parsed forwards.

Parameters:

f - The actual text of the word.

p - The word that came before this one in the sentence.

Word

public Word(String f,
            String pos,
            Word p)

This constructor is useful when the sentence is being parsed forwards.

Parameters:

f - The actual text of the word.

pos - A token representing the word's part of speech.

p - The word that came before this one in the sentence.

Word

public Word(String f,
            int start,
            int end)

When you have offset information.

Parameters:

f - The actual text of the word.

start - The offset into the parent document at which the first character of this word is found.

end - The offset into the parent document at which the last character of this word is found.

Word

public Word(String f,
            String pos,
            int start,
            int end)

When you have offset information.

Parameters:

f - The actual text of the word.

pos - A token representing the word's part of speech.

start - The offset into the parent document at which the first character of this word is found.

end - The offset into the parent document at which the last character of this word is found.

Word

public Word(String f,
            Word p,
            int start,
            int end)

This constructor is useful when the sentence is being parsed forwards.

Parameters:

f - The actual text of the word.

p - The word that came before this one in the sentence.

start - The offset into the parent document at which the first character of this word is found.

end - The offset into the parent document at which the last character of this word is found.

Word

public Word(String f,
            String pos,
            Word p,
            int start,
            int end)

This constructor is useful when the sentence is being parsed forwards.

Parameters:

f - The actual text of the word.

pos - A token representing the word's part of speech.

p - The word that came before this one in the sentence.

start - The offset into the parent document at which the first character of this word is found.

end - The offset into the parent document at which the last character of this word is found.

Word

public Word(String f,
            String pos,
            String l,
            String sense,
            Word p,
            int start,
            int end)

This constructor is useful when the sentence is being parsed forwards.

Parameters:

f - The actual text of the word.

pos - A token representing the word's part of speech.

l - The base form of the word.

sense - The sense of the word.

p - The word that came before this one in the sentence.

start - The offset into the parent document at which the first character of this word is found.

end - The offset into the parent document at which the last character of this word is found.

Method Detail

toString

public String toString()

The string representation of a word is its POS bracket form, or, if the part of speech is not available, it is just the spelling of the word. Note that the POS bracket form of a word also entails displaying left brackets ("(", "[", and "{") as "-LRB-" and right brackets (")", "]", "}") as "-RRB-".

Overrides:

toString in class Object

Returns:

The POS bracket form of this word, or just the spelling of the word if the part of speech is not available.