Class SemanticSpace

java.lang.Object
  SemanticSpace

public class SemanticSpace
extends java.lang.Object

This class implements the integration with Matlab for TML

Author:

Jorge Villalon

Constructor Summary

SemanticSpace(java.lang.String pathToRepository, java.lang.String pathToMatlab)
Creates a new instance of a SemanticSpace, the space will be created with all text documents found in a particular folder.

Method Summary

java.lang.String[]	getDocuments()
double[][]	getTermDocMatrix() Returns the matrix that represents the semantic space
java.lang.String[]	getTerms()
void	load() Loads the semantic space
void	setDimensionalityReductionCriteria(int reduction, double threshold) Sets the criteria to select how many dimension will be kept after SVD
void	setTermSelectionCriteria(int selection, double threshold) Sets the criteria to select which terms will be included in the LSA space
void	setTermWeightingCriteria(int local, int global) Sets the term weighting scheme that will be used to calculate the LSA space
java.lang.String	stemWords(java.lang.String phrase) Stemming words with Lucene and making it available in Matlab

Methods inherited from class java.lang.Object

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

Constructor Detail

SemanticSpace

public SemanticSpace(java.lang.String pathToRepository,
                     java.lang.String pathToMatlab)
              throws java.lang.Exception

Creates a new instance of a SemanticSpace, the space will be created with all text documents found in a particular folder.

Parameters:

pathToRepository - folder containing the documents to be processed

pathToMatlab - folder where the user's matlab folder is

Throws:

java.lang.Exception

Method Detail

stemWords

public java.lang.String stemWords(java.lang.String phrase)

Stemming words with Lucene and making it available in Matlab

Parameters:

phrase -

Returns:

load

public void load()
          throws java.lang.Exception

Loads the semantic space

Throws:

java.lang.Exception

setTermSelectionCriteria

public void setTermSelectionCriteria(int selection,
                                     double threshold)

Sets the criteria to select which terms will be included in the LSA space

Parameters:

selection - the criteria

threshold - the threshold above which the criteria will be validated

setDimensionalityReductionCriteria

public void setDimensionalityReductionCriteria(int reduction,
                                               double threshold)

Sets the criteria to select how many dimension will be kept after SVD

Parameters:

reduction - the criteria

threshold - the threshold above which the criteria will be validated

setTermWeightingCriteria

public void setTermWeightingCriteria(int local,
                                     int global)

Sets the term weighting scheme that will be used to calculate the LSA space

Parameters:

local - local weight criterion

global - global weight criterion

getTermDocMatrix

public double[][] getTermDocMatrix()
                            throws java.lang.Exception

Returns the matrix that represents the semantic space

Returns:

a matrix of doubles

Throws:

java.lang.Exception

getTerms

public java.lang.String[] getTerms()
                            throws java.lang.Exception

Returns:

all terms in the semantic space

Throws:

java.lang.Exception

getDocuments

public java.lang.String[] getDocuments()
                                throws java.lang.Exception

Returns:

all the documents in the semantic space

Throws:

java.lang.Exception