edu.ucla.sspace.wordsi

Class GeneralContextExtractor

java.lang.Object

edu.ucla.sspace.wordsi.GeneralContextExtractor

All Implemented Interfaces:

ContextExtractor

public class GeneralContextExtractor
extends Object
implements ContextExtractor

A general purpose ContextExtractor. This extractor assumes that documents are simply raw text and contexts should be defined by word co-occurrences. This class depends on a ContextGenerator for generating context vectors.

Author:

Keith Stevens

Constructor Summary

Constructors

Constructor and Description
GeneralContextExtractor(ContextGenerator generator, int windowSize, boolean readHeader) Creates a new GeneralContextExtracto.

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

GeneralContextExtractor

public GeneralContextExtractor(ContextGenerator generator,
                       int windowSize,
                       boolean readHeader)

Creates a new GeneralContextExtracto.

Parameters:

generator - The ContextGenerator responsible for creating context vectors

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