/*
* RapidMiner
*
* Copyright (C) 2001-2011 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.tools.math.function;
import com.rapidminer.tools.Ontology;
/**
* This is an enumeration for possible unknown values. This is used to determine, of which
* type an returned unknown actually is.
*
* @author Sebastian Land
*/
public enum UnknownValue {
UNKNOWN_NOMINAL(Ontology.NOMINAL),
// UNKNOWN_NUMERICAL(Ontology.NUMERICAL), Numerical Unknowns must be encoded by Double.NaN
UNKNOWN_BOOLEAN(Ontology.BINOMINAL),
UNKNOWN_DATE(Ontology.DATE_TIME);
private int valueType;
UnknownValue(int valueType) {
this.valueType = valueType;
}
public int getValueType() {
return valueType;
}
}