/* * RapidMiner * * Copyright (C) 2001-2014 by RapidMiner and the contributors * * Complete list of developers available at our web site: * * http://rapidminer.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.generator; import java.util.logging.Level; import com.rapidminer.tools.LogService; /** * Creates the reciprocal value of all input attributes. If the generator is * bounded, the values are bounded by the biggest and smallest possible values. * * @author Simon Fischer, Ingo Mierswa * ingomierswa Exp $ */ public class ReciprocalValueGenerator extends SingularNumericalGenerator { public static final String FUNCTION_NAMES[] = { "1/" }; public ReciprocalValueGenerator() {} @Override public FeatureGenerator newInstance() { return new ReciprocalValueGenerator(); } @Override public double calculateValue(double value) { return 1.0d / value; } @Override public void setFunction(String name) { for (int i = 0; i < FUNCTION_NAMES.length; i++) { if (FUNCTION_NAMES[i].equals(name)) return; } //LogService.getGlobal().log("Illegal function name '" + name + "' for " + getClass().getName() + ".", LogService.ERROR); LogService.getRoot().log(Level.SEVERE, "com.rapidminer.generator.ReciprocalValueGenerator.illegal_function_name", new Object[] {name, getClass().getName()}); } @Override public String getFunction() { return FUNCTION_NAMES[0]; } }