edu.stanford.nlp.trees.international.tuebadz

Class TueBaDZHeadFinder

java.lang.Object

edu.stanford.nlp.trees.AbstractCollinsHeadFinder

edu.stanford.nlp.trees.international.tuebadz.TueBaDZHeadFinder

All Implemented Interfaces:

CopulaHeadFinder, HeadFinder, java.io.Serializable

public class TueBaDZHeadFinder
extends AbstractCollinsHeadFinder

A HeadFinder for TueBa-D/Z. First version. Notes: EN_ADD seems to be replaced by ENADD in 2008 ACL German. Added as alternant by CDM.

Author:

Roger Levy (rog@csli.stanford.edu)

See Also:

Serialized Form

Field Summary

Fields inherited from class edu.stanford.nlp.trees.AbstractCollinsHeadFinder

defaultLeftRule, defaultRightRule, defaultRule, nonTerminalInfo, tlp

Constructor Summary

Constructors

Constructor and Description
TueBaDZHeadFinder()

Method Summary

Modifier and Type	Method and Description
java.lang.String	basicCategory(java.lang.String category)
protected Tree	determineNonTrivialHead(Tree t, Tree parent) Called by determineHead and may be overridden in subclasses if special treatment is necessary for particular categories.
protected Tree	findMarkedHead(Tree t) A way for subclasses for corpora with explicit head markings to return the explicitly marked head
boolean	isLabelAnnotationIntroducingCharacter(char ch) Say whether this character is an annotation introducing character.

Methods inherited from class edu.stanford.nlp.trees.AbstractCollinsHeadFinder

determineHead, determineHead, makesCopulaHead, postOperationFix, traverseLocate

Methods inherited from class java.lang.Object

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

Constructor Detail

TueBaDZHeadFinder

public TueBaDZHeadFinder()

Method Detail

findMarkedHead

protected Tree findMarkedHead(Tree t)

Description copied from class: AbstractCollinsHeadFinder

A way for subclasses for corpora with explicit head markings to return the explicitly marked head

Overrides:

findMarkedHead in class AbstractCollinsHeadFinder

Parameters:

t - a tree to find the head of

Returns:

the marked head-- null if no marked head

basicCategory

public java.lang.String basicCategory(java.lang.String category)

isLabelAnnotationIntroducingCharacter

public boolean isLabelAnnotationIntroducingCharacter(char ch)

Say whether this character is an annotation introducing character.

Parameters:

ch - The character to check

Returns:

Whether it is an annotation introducing character

determineNonTrivialHead

protected Tree determineNonTrivialHead(Tree t,
                                       Tree parent)

Called by determineHead and may be overridden in subclasses if special treatment is necessary for particular categories.

Overrides:

determineNonTrivialHead in class AbstractCollinsHeadFinder

Parameters:

t - The tre to determine the head daughter of

parent - The parent of t (or may be null)

Returns:

The head daughter of t