/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.operator;
import com.rapidminer.example.Attribute;
import com.rapidminer.example.Attributes;
import com.rapidminer.example.ExampleSet;
import com.rapidminer.example.set.ModelViewExampleSet;
/**
* The view model is typically used for preprocessing models. With help of the
* {@link ModelViewExampleSet} one can create a new view of the data by applying
* the necessary transformations defined by this view model.
*
* @author Sebastian Land
* @version $Id: ViewModel.java,v 1.5 2008/05/09 19:23:19 ingomierswa Exp $
*/
public interface ViewModel extends Model {
/**
* This method has to return a legal Attributes object containing
* every Attribute, the view should contain
* @return The attribute object
*/
public abstract Attributes getTargetAttributes(ExampleSet viewParent);
/**
* This method has to provide the attribute value mapping for the view.
* The views attributes will ask this method for their value.
* @param targetAttribute the attribute, which asks for his value
* @param value the value the source attribute had in original data
* @return the value the attribute should have in target view
*/
public abstract double getValue(Attribute targetAttribute, double value);
}