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

java.lang.Object
  edu.stanford.nlp.trees.international.arabic.ATBTreeUtils

public class ATBTreeUtils
extends java.lang.Object

Various static convenience methods for processing Arabic parse trees.

Author:

Spence Green

Field Summary

static java.lang.String	morphBoundary
static java.lang.String	puncTag
static java.util.Set<java.lang.String>	reservedWords
static java.lang.String	segMarker

Method Summary

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

morphBoundary

public static final java.lang.String morphBoundary

See Also:

Constant Field Values

puncTag

public static final java.lang.String puncTag

See Also:

Constant Field Values

reservedWords

public static final java.util.Set<java.lang.String> reservedWords

Method Detail

escape

public static java.lang.String escape(java.lang.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 java.lang.String unEscape(java.lang.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 java.lang.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 java.lang.String taggedStringFromTree(Tree t,
                                                    boolean removeEscaping,
                                                    java.lang.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(java.lang.String[] args)