AdaptiveRandomForest-master/src/main/java/moa/clusterers/outliers/utils/mtree/DistanceFunction.java
/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program. If not, see <http://www.gnu.org/licenses/>.
 *    
 */

package moa.clusterers.outliers.utils.mtree;

/**
 * An object that can calculate the distance between two data objects.
 *
 * @param <DATA> The type of the data objects.
 */
public interface DistanceFunction<DATA> {
	
	double calculate(DATA data1, DATA data2);
	
}
