/**
* Copyright (C) 2001-2017 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.operator.preprocessing.transformation.aggregation;
import com.rapidminer.example.Attribute;
/**
* This function first behaves like {@link CountAggregationFunction}, but it delivers fractions of
* the total count instead of absolute values. E.g. {@link SumAggregationFunction} delivers [20, 50,
* 30] this function would deliver [0.2, 0.5, 0.3]
*
* @author Marco Boeck
*
*/
public class CountFractionalAggregationFunction extends AbstractCountRatioAggregationFunction {
public static final String FUNCTION_COUNT_FRACTIONAL = "fractional_count";
public CountFractionalAggregationFunction(Attribute sourceAttribute, boolean ignoreMissings, boolean countOnlyDisctinct) {
super(sourceAttribute, ignoreMissings, countOnlyDisctinct, FUNCTION_COUNT_FRACTIONAL);
}
public CountFractionalAggregationFunction(Attribute sourceAttribute, boolean ignoreMissings, boolean countOnlyDisctinct,
String functionName, String separatorOpen, String separatorClose) {
super(sourceAttribute, ignoreMissings, countOnlyDisctinct, functionName, separatorOpen, separatorClose);
}
/*
* (non-Javadoc)
*
* @see com.rapidminer.operator.preprocessing.transformation.aggregation.
* AbstractCountRatioAggregationFunction#getRatioFactor()
*/
@Override
public double getRatioFactor() {
return 1.0;
}
}