edu.stanford.nlp.trees.international.arabic

Class ATBTreeUtils

java.lang.Object

edu.stanford.nlp.trees.international.arabic.ATBTreeUtils

public class ATBTreeUtils
extends Object

Various static convenience methods for processing Arabic parse trees.

Author:

Spence Green

Field Summary

Fields

Modifier and Type	Field and Description
static String	morphBoundary
static String	puncTag
static Set<String>	reservedWords
static String	segMarker

Method Summary

Modifier and Type	Method and Description
static String	escape(String s) Escapes tokens from flat strings that are reserved for usage in the ATB.
static String	flattenTree(Tree t) Returns the string associated with the input parse tree.
static void	main(String[] args)
static String	taggedStringFromTree(Tree t, boolean removeEscaping, String separator) Converts a parse tree into a string of tokens.
static String	unEscape(String s) Reverts escaping from a flat string.

Methods inherited from class java.lang.Object

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

Field Detail

segMarker

public static String segMarker

morphBoundary

public static final String morphBoundary

See Also:

Constant Field Values

puncTag

public static final String puncTag

See Also:

Constant Field Values

reservedWords

public static final Set<String> reservedWords

Method Detail

escape

public static String escape(String s)

Escapes tokens from flat strings that are reserved for usage in the ATB.

Parameters:

s - - An Arabic string

Returns:

A string with all reserved words replaced by the appropriate tokens

unEscape

public static String unEscape(String s)

Reverts escaping from a flat string.

Parameters:

s - - An Arabic string

Returns:

A string with all reserved words inserted into the appropriate locations

flattenTree

public static String flattenTree(Tree t)

Returns the string associated with the input parse tree. Traces and ATB-specific escape sequences (e.g., "-RRB-" for ")") are removed.

Parameters:

t - - A parse tree

Returns:

The yield of the input parse tree

taggedStringFromTree

public static String taggedStringFromTree(Tree t,
                                          boolean removeEscaping,
                                          String separator)

Converts a parse tree into a string of tokens. Each token is a word and its POS tag separated by the delimiter specified by separator

Parameters:

t - - A parse tree

removeEscaping - - If true, remove LDC escape characters. Otherwise, leave them.

separator - Word/tag separator

Returns:

A string of tagged words

main

public static void main(String[] args)