/*
* 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.learner.functions.kernel.functions;
/**
* This is the interface describing the kernel cache.
*
* @author Ingo Mierswa
* @version $Id: KernelCache.java,v 1.4 2008/09/12 10:29:39 tobiasmalbrecht Exp $
*/
public interface KernelCache {
/** Stores the value. Should only be invoked if the value was not known. This method might
* delete kernel values so that the invocation of get might deliver NaN. */
public void store(int i, int j, double value);
/** Delivers the cached value or Double.NaN if the value is not known. */
public double get(int i, int j);
}