edu.illinois.cs.cogcomp.nlp.utilities

Class ParseTreeProperties

java.lang.Object

edu.illinois.cs.cogcomp.nlp.utilities.ParseTreeProperties

public class ParseTreeProperties
extends Object

This class consists of a set of functions of the form "is a label X?", where the label is a node in the parse tree and X could be different linguistic classes, parts of speech, etc. The functions assume that the parse trees are annotated in the Penn Treebank style.

Most of the information is from the list here.

Author:

Vivek Srikumar

Jan 29, 2009

Constructor Summary

Constructors

Constructor and Description
ParseTreeProperties()

Method Summary

Modifier and Type	Method and Description
static boolean	isNominal(String token)
static boolean	isNonTerminalAdjective(String nonTerminalToken)
static boolean	isNonTerminalAdverb(String nonTerminalToken)
static boolean	isNonTerminalNoun(String nonTerminalToken)
static boolean	isNonTerminalPP(String nonTerminalToken)
static boolean	isNonTerminalVerb(String nonTerminalToken)
static boolean	isNullLabel(String label)
static boolean	isPreTerminal(Constituent treeNode)
static boolean	isPreTerminal(Tree<String> tree) Is a given tree a pre-terminal.
static boolean	isPunctuationToken(String label)
static boolean	isVerb(String token)

Methods inherited from class java.lang.Object

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

Constructor Detail

ParseTreeProperties

public ParseTreeProperties()

Method Detail

isPreTerminal

public static boolean isPreTerminal(Tree<String> tree)

Is a given tree a pre-terminal. This could be used to check for POS tag too, if the convention is that pre-terminals are POS tags.

isPreTerminal

public static boolean isPreTerminal(Constituent treeNode)

isNonTerminalNoun

public static boolean isNonTerminalNoun(String nonTerminalToken)

isNonTerminalVerb

public static boolean isNonTerminalVerb(String nonTerminalToken)

isNonTerminalAdjective

public static boolean isNonTerminalAdjective(String nonTerminalToken)

isNonTerminalAdverb

public static boolean isNonTerminalAdverb(String nonTerminalToken)

isNonTerminalPP

public static boolean isNonTerminalPP(String nonTerminalToken)

isNominal

public static boolean isNominal(String token)

isVerb

public static boolean isVerb(String token)

isPunctuationToken

public static boolean isPunctuationToken(String label)

isNullLabel

public static boolean isNullLabel(String label)