edu.stanford.nlp.trees
Class CollocationFinder

java.lang.Object
  edu.stanford.nlp.trees.CollocationFinder

public class CollocationFinder
extends java.lang.Object

Finds WordNet collocations in parse trees. It can restructure collocations as single words, where the original words are joined by underscores. You can test performance by using the "collocations" option to the TreePrint class.

Author:

Chris Cox, Eric Yeh

Constructor Summary

CollocationFinder(Tree t, WordNetConnection w)
Construct a new CollocationFinder over the Tree t.

CollocationFinder(Tree t, WordNetConnection w, HeadFinder hf)
Construct a new CollocationFinder over the Tree t.

CollocationFinder(Tree t, WordNetConnection w, HeadFinder hf, boolean threadSafe)
Construct a new CollocationFinder over the Tree t.

Method Summary

Tree	getMangledTree() Returns the "collocations included" parse tree.
void	PrintCollocationStrings(java.io.PrintWriter pw) Prints the collocations found in this Tree as strings.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollocationFinder

public CollocationFinder(Tree t,
                         WordNetConnection w)

Construct a new CollocationFinder over the Tree t. The default HeadFinder is a CollinsHeadFinder.

Parameters:

t - parse tree

w - wordnet connection

CollocationFinder

public CollocationFinder(Tree t,
                         WordNetConnection w,
                         HeadFinder hf)

Construct a new CollocationFinder over the Tree t.

Parameters:

t - parse tree

w - wordnet connection

hf - HeadFinder to use

CollocationFinder

public CollocationFinder(Tree t,
                         WordNetConnection w,
                         HeadFinder hf,
                         boolean threadSafe)

Construct a new CollocationFinder over the Tree t.

Parameters:

t - parse tree

w - wordnet connection

hf - HeadFinder to use

threadSafe - whether to include synchronization, etc.

Method Detail

getMangledTree

public Tree getMangledTree()

Returns the "collocations included" parse tree.

Returns:

the mangled tree which applies collocations found in this object.

PrintCollocationStrings

public void PrintCollocationStrings(java.io.PrintWriter pw)

Prints the collocations found in this Tree as strings. Each is followed by its boundary constituent indices in the original tree.
Example: throw_up (2,3)
came_up_with (7,9)