edu.ucla.sspace.dependency

Interface DependencyExtractor

All Known Implementing Classes:

CoNLLDependencyExtractor, WaCKyDependencyExtractor

public interface DependencyExtractor

An interface for classes that read the output files of dependency parse sentences and convert the data into a dependency parse tree. This interface allows uniform access to tree structure from different parsing output formats, such as CoNLL or MINIPAR.

Author:

Keith Stevens

Method Summary

Methods

Modifier and Type	Method and Description
DependencyTreeNode[]	readNextTree(BufferedReader reader) Reads the next dependency-parse tree from the reader, returning an array of all the nodes in the tree.

Method Detail

readNextTree

DependencyTreeNode[] readNextTree(BufferedReader reader)
                                  throws IOException

Reads the next dependency-parse tree from the reader, returning an array of all the nodes in the tree. The relations in the tree are reflected in the nodes.

This function may be called multiple times on the same reader if more than one tree exists.

Parameters:

reader - a reader containing one or more dependency parse trees in a recognized format

Returns:

an array of DependencyTreeNodes that compose a dependency tree or null if no tree exists in the reader.

Throws:

IOException - when errors are encountered during reading