/***********************************************************************
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/
**********************************************************************/
/**
* <p>
* @author Written by Juli�n Luengo Mart�n 08/03/2006
* @version 0.3
* @since JDK 1.5
* </p>
*/
package keel.Algorithms.Preprocess.Missing_Values.svmImpute;
import java.util.Vector;
/**
* <p>
* This class stores a list of Value-attribute elements. This list contains a FreqList associated to each class,
* i.e. stores the frequency of each classes associated to a given value.
* </p>
*/
public class VAList {
protected Vector elemsList = null;
protected int totalElems = 0;
/**
* <p>
* Creates a new instance of VAList
* </p>
*/
public VAList() {
elemsList = new Vector();
totalElems = 0;
}
/**
* <p>
* Adds an attribute value with its associated class to this list. If no frequency list for this value
* exists yet, then creates one new.
* </p>
* @param value The value of the attribute
* @param _class The class of the instance from which the value has been extracted
*/
public void addValueNClass(double value, double _class){
valueAssociations a = null;
boolean found = false;
if(elemsList.size()!=0){
for(int i=0;i<elemsList.size()&&!found;i++){
a = (valueAssociations)elemsList.elementAt(i);
if(a.getValue() == value){ //class of value found
found = true;
a.addElement(_class);
}
}
}
if(!found || elemsList.size()==0){ //list empty or not added yet, add new element
a = new valueAssociations(value);
a.addElement(_class);
elemsList.addElement(a);
}
totalElems++;
}
/**
* <p>
* this method returns a object with the frequencies list associated to
* the value passed as parameter
* </p>
* @param ref The class of the list we want to retrieve
* @return The object with the frequencies list of this class
*/
public valueAssociations getVA(double ref){
valueAssociations a = null;
boolean found = false;
if(elemsList.size()!=0){
for(int i=0;i<elemsList.size()&&!found;i++){
a = (valueAssociations)elemsList.elementAt(i);
if(a.getValue() == ref){ //class of value found
return a;
}
}
}
return null; //not found or list empty
}
/**
* <p>
* This method returns the valueAssociations object which is in position 'i'.
* It is intended for sequential access.
* </p>
* @param i The index of the VA object we want
* @return The element VA at position 'i'
*/
public valueAssociations getnVA(int i){
return (valueAssociations)elemsList.elementAt(i);
}
/**
* <p>
* This method gives the number of VA elements stored (i.e. the number of different values)
* </p>
* @return The number of elements in the list
*/
public int getNumVA(){
return elemsList.size();
}
/**
* <p>
* This method returns the total of elements ever added to this list.
* </p>
* @return The total number of pairs value-class ever added
*/
public int getNumElems(){
return totalElems;
}
}