edu.ucla.sspace.wordsi.semeval

Class SemEvalContextExtractor

java.lang.Object

edu.ucla.sspace.wordsi.semeval.SemEvalContextExtractor

All Implemented Interfaces:

ContextExtractor

public class SemEvalContextExtractor
extends Object
implements ContextExtractor

A ContextExtractor for handling SemEval or SenseEval corpora. For each document, there should be an instance identifier, which uniquely identifies the context. There should also be some marker, i.e., "|||", that marks where the focus word is in the document. Only one context vector will be generated for each document. This class depends on a ContextGenerator for generating the context vectors.

Author:

Keith Stevens

Constructor Summary

Constructors

Constructor and Description
SemEvalContextExtractor(ContextGenerator generator, int windowSize) Creates a new SemEvalContextExtractor.
SemEvalContextExtractor(ContextGenerator generator, int windowSize, String separator) Creates a new SemEvalContextExtractor.

Method Summary

Methods

Modifier and Type	Method and Description
int	getVectorLength() Returns the maximum number of dimensions used to represent any given context.
void	processDocument(BufferedReader document, Wordsi wordsi) Processes the content of document and calls Wordsi.handleContextVector(java.lang.String, java.lang.String, edu.ucla.sspace.vector.SparseDoubleVector) for each context vector that can be extracted from document.

Methods inherited from class java.lang.Object

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

Constructor Detail

SemEvalContextExtractor

public SemEvalContextExtractor(ContextGenerator generator,
                       int windowSize)

Creates a new SemEvalContextExtractor.

Parameters:

generator - The ContextGenerator responsible for creating context vectors

windowSize - the number of words before and after a focus word which compose the context.

SemEvalContextExtractor

public SemEvalContextExtractor(ContextGenerator generator,
                       int windowSize,
                       String separator)

Creates a new SemEvalContextExtractor.

Parameters:

generator - The ContextGenerator responsible for creating context vectors

windowSize - the number of words before and after a focus word which compose the context.

Method Detail

getVectorLength

public int getVectorLength()

Returns the maximum number of dimensions used to represent any given context.

Specified by:

getVectorLength in interface ContextExtractor

processDocument

public void processDocument(BufferedReader document,
                   Wordsi wordsi)

Processes the content of document and calls Wordsi.handleContextVector(java.lang.String, java.lang.String, edu.ucla.sspace.vector.SparseDoubleVector) for each context vector that can be extracted from document.

Specified by:

processDocument in interface ContextExtractor