edu.stanford.nlp.trees
Class LeftHeadFinder

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

All Implemented Interfaces:

HeadFinder, Serializable

public class LeftHeadFinder
extends Object
implements HeadFinder

HeadFinder that always returns the leftmost daughter as head. For testing purposes.

Author:

Roger Levy

See Also:

Serialized Form

Constructor Summary

LeftHeadFinder()

Method Summary

Tree	determineHead(Tree t) Determine which daughter of the current parse tree is the head.

Methods inherited from class java.lang.Object

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

Constructor Detail

LeftHeadFinder

public LeftHeadFinder()

Method Detail

determineHead

public Tree determineHead(Tree t)

Description copied from interface: HeadFinder

Determine which daughter of the current parse tree is the head. It assumes that the daughters already have had their heads determined. Another method has to do the tree walking.

Specified by:

determineHead in interface HeadFinder

Parameters:

t - The parse tree to examine the daughters of

Returns:

The parse tree that is the head. The convention has been that this returns null if no head is found. But maybe it should throw an exception?