org.apache.ctakes.core.nlp.tokenizer

Class ContractionsPTB

java.lang.Object

org.apache.ctakes.core.nlp.tokenizer.ContractionsPTB

public class ContractionsPTB
extends Object

Author:

Mayo Clinic

Constructor Summary

Constructors

Constructor and Description
ContractionsPTB()

Method Summary

Modifier and Type	Method and Description
static ContractionResult	getLengthIfNextApostIsMiddleOfContraction(int position, int nextNonLetterDigit, String lowerCasedText) Determine if the text starting at 'position' within 'text' is the start of a contraction such as "should've" or "hasn't" or "it's" by looking at whether there is a letter before the apostrophe, and the appropriate letters after the apostrophe (or in the case of "n't", verify the letter before is an 'n' Note that if the text starting at 'position' is something like "n't" which isn't a complete word, returns null.
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

ContractionsPTB

public ContractionsPTB()

Method Detail

getLengthIfNextApostIsMiddleOfContraction

public static ContractionResult getLengthIfNextApostIsMiddleOfContraction(int position,
                                                                          int nextNonLetterDigit,
                                                                          String lowerCasedText)

Determine if the text starting at 'position' within 'text' is the start of a contraction such as "should've" or "hasn't" or "it's" by looking at whether there is a letter before the apostrophe, and the appropriate letters after the apostrophe (or in the case of "n't", verify the letter before is an 'n' Note that if the text starting at 'position' is something like "n't" which isn't a complete word, returns null.

Parameters:

position - first char of next token

lowerCasedText - text into which parameter position is an index into

Returns:

the length of the WordToken part of the contraction. Note this is not always the position of the apostrophe. For example, for can't, which is tokenized as ca n't the length is 2. For "it's", the length is also 2.

See Also:

for handling contractions like "cannot" that don't have an apostrophe

main

public static void main(String[] args)