MiDataset.java

/***********************************************************************

	This file is part of KEEL-software, the Data Mining tool for regression, 
	classification, clustering, pattern mining and so on.

	Copyright (C) 2004-2010
	
	F. Herrera (herrera@decsai.ugr.es)
    L. S�nchez (luciano@uniovi.es)
    J. Alcal�-Fdez (jalcala@decsai.ugr.es)
    S. Garc�a (sglopez@ujaen.es)
    A. Fern�ndez (alberto.fernandez@ujaen.es)
    J. Luengo (julianlm@decsai.ugr.es)

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see http://www.gnu.org/licenses/
  
**********************************************************************/

/*
 * Created on 08-feb-2004
 *
 */

/**
 * @author Jesus Alcala Fernandez
 */

package keel.Algorithms.RE_SL_Postprocess.MamSelect;
import java.io.*; 
import org.core.*; 
import keel.Dataset.*;
import java.util.*;

public class MiDataset{

	public TTABLA [] datos;
    public int n_variables, n_var_estado, n_var_control, long_tabla;
	public int no_cubiertos;
	public TipoIntervalo [] extremos;
	public String fichero;
    public InstanceSet IS;
	public boolean noOutputs;
	public boolean salir;


	/** Stores in memory the contents of the data file "f" */
	public MiDataset(String f, boolean train) {
		fichero = f;
		IS = new InstanceSet();

		try {
		  processModelDataset(f, train);
		}
		catch (Exception e) {
          System.out.println("DBG: Exception in readSet");
          e.printStackTrace();
		}
	}


    public void processModelDataset(String nfejemplos, boolean train) throws IOException {
	  int i, j, k;

	  try {

        // Load in memory a dataset that contains a regression problem
        IS.readSet(nfejemplos,train);

		// We read the number of instances and variables
		long_tabla = IS.getNumInstances();
        n_var_estado = Attributes.getInputNumAttributes();
        n_var_control = Attributes.getOutputNumAttributes();
		no_cubiertos = long_tabla;


        // Check that there is only one output variable and
        // it is nominal
       
        if (n_var_control>1) {
          System.out.println("This algorithm can not process MIMO datasets");
          System.out.println("All outputs but the first one will be removed");
        }
       
        boolean noOutputs=false;
        if (n_var_control<1) {
          System.out.println("This algorithm can not process datasets without outputs");
          System.out.println("Zero-valued output generated");
          noOutputs=true;
        }

        n_var_control = 1;
        n_variables = n_var_estado + n_var_control;

        // Initialice and fill our own tables
		datos = new TTABLA[long_tabla];
       
        // Maximum and minimum of inputs/output data
		extremos = new TipoIntervalo[n_variables];
		for (i=0; i<n_variables; i++)  extremos[i] = new TipoIntervalo();
    
   		/*check if there aren't continous attributes*/
   		if(Attributes.hasNominalAttributes()) {
    			System.err.println("MamSelect can only handle real attributes." );
    			salir = true;
        }
		else {
    	  salir = false;
        // All values are casted into double/integer
        for (i=0, k=0; i<long_tabla; i++) {
          Instance inst = IS.getInstance(i);

		  if (inst.existsAnyMissingValue()==true) {
			  System.out.println ("This algorithm can not process missing values");
			  System.out.println ("This algorithm don't use the instance " + (i+1) + ". You have to apply before a preprocess method");
		  }
		  else {
			datos[k] = new TTABLA(n_variables);
			for (j=0; j<n_var_estado; j++)  {
				datos[k].ejemplo[j] = IS.getInputNumericValue(i,j);
				if (datos[k].ejemplo[j]>extremos[j].max || k==0) extremos[j].max = datos[k].ejemplo[j];
				if (datos[k].ejemplo[j]<extremos[j].min || k==0) extremos[j].min = datos[k].ejemplo[j];
			}
           
			if (noOutputs)  datos[k].ejemplo[j] = 0; 
			else  datos[k].ejemplo[j] = IS.getOutputNumericValue(i,0);
			if (datos[k].ejemplo[j]>extremos[j].max) extremos[j].max = datos[k].ejemplo[j];
			if (datos[k].ejemplo[j]<extremos[j].min) extremos[j].min = datos[k].ejemplo[j];
			k++;
		  }
        }

		long_tabla = k;
       }
      } catch (Exception e) {
        System.out.println("DBG: Exception in readSet");
        e.printStackTrace();
      }
	}

    /** It returns the header */
	public String getCabecera () {
		return (IS.getHeader());
	}
}