edu.stanford.nlp.trees

Class GrammaticalFunctionTreeNormalizer

java.lang.Object

edu.stanford.nlp.trees.TreeNormalizer

edu.stanford.nlp.trees.GrammaticalFunctionTreeNormalizer

All Implemented Interfaces:

Serializable

public class GrammaticalFunctionTreeNormalizer
extends TreeNormalizer

Tree normalizer for cleaning up labels and preserving the whole node label, the grammatical function and category information from the label, or only the category information. Only normalization occurs on nonterminals.

Author:

Anna Rafferty

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected TreebankLanguagePack	tlp

Constructor Summary

Constructors

Constructor and Description
GrammaticalFunctionTreeNormalizer(TreebankLanguagePack tlp, int nodeCleanup)

Method Summary

Modifier and Type	Method and Description
protected String	cleanUpLabel(String label) Remove things like hyphened functional tags and equals from the end of a node label.
String	normalizeNonterminal(String category) Normalizes a nonterminal contents.

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

normalizeTerminal, normalizeWholeTree

Methods inherited from class java.lang.Object

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

Field Detail

tlp

protected final TreebankLanguagePack tlp

Constructor Detail

GrammaticalFunctionTreeNormalizer

public GrammaticalFunctionTreeNormalizer(TreebankLanguagePack tlp,
                                         int nodeCleanup)

Method Detail

normalizeNonterminal

public String normalizeNonterminal(String category)

Normalizes a nonterminal contents. This implementation strips functional tags, etc. and interns the nonterminal.

Overrides:

normalizeNonterminal in class TreeNormalizer

Parameters:

category - The String that decorates this nonterminal node

Returns:

The normalized form of this nonterminal String

cleanUpLabel

protected String cleanUpLabel(String label)

Remove things like hyphened functional tags and equals from the end of a node label.