edu.stanford.nlp.trees

Class GenerateTrees

java.lang.Object

edu.stanford.nlp.trees.GenerateTrees

public class GenerateTrees
extends java.lang.Object

Generates trees based on simple grammars.
To run this script, run with an input file, an output file, and a number of trees specified.
A more complete example is as follows:

# This grammar produces trees that look like
# (S A (V B C)) -> (S X (V Y Z))
# (S D E F) -> (S X Y Z)

nonterminals
ROOT S
S A V
V B C
S D E F

terminals
A avocet albatross artichoke
B barium baseball brontosaurus
C canary cardinal crow
D delphinium dolphin dragon
E egret emu estuary
F finch flock finglonger

tsurgeon
S << /A|D/=n1 << /B|E/=n2 << /C|F/=n3

relabel n1 X
relabel n2 Y
relabel n3 Z

You then run the program with
java edu.stanford.nlp.trees.GenerateTrees input.txt output.txt 100

Author:

John Bauer

Constructor Summary

Constructors

Constructor and Description
GenerateTrees()

Method Summary

Modifier and Type	Method and Description
static void	help()
static void	main(java.lang.String[] args)
Tree	produceTree(java.lang.String state)
void	produceTrees(java.io.PrintWriter pout, int numTrees)
void	produceTrees(java.lang.String filename, int numTrees)
void	readGrammar(java.io.BufferedReader bin)
void	readGrammar(java.lang.String filename)

Methods inherited from class java.lang.Object

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

Constructor Detail

GenerateTrees

public GenerateTrees()

Method Detail

readGrammar

public void readGrammar(java.lang.String filename)

readGrammar

public void readGrammar(java.io.BufferedReader bin)

produceTrees

public void produceTrees(java.lang.String filename,
                         int numTrees)

produceTrees

public void produceTrees(java.io.PrintWriter pout,
                         int numTrees)

produceTree

public Tree produceTree(java.lang.String state)

help

public static void help()

main

public static void main(java.lang.String[] args)