org.grouplens.lenskit.eval.data.crossfold.Order Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of lenskit-eval Show documentation

Facilities for evaluating recommender algorithms.

There is a newer version: 3.0-T5

/*
 * LensKit, an open source recommender systems toolkit.
 * Copyright 2010-2014 LensKit Contributors.  See CONTRIBUTORS.md.
 * Work on LensKit has been funded by the National Science Foundation under
 * grants IIS 05-34939, 08-08692, 08-12148, and 10-17697.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 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, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.grouplens.lenskit.eval.data.crossfold;

import java.util.List;
import java.util.Random;

/**
 * An order for a list.
 *
 * @author GroupLens Research
 */
public interface Order {
    /**
     * Apply the ordering.
     *
     * @param list The list to order.
     * @param rng  The random number generator to use, if necessary.
     */
    void apply(List list, Random rng);
}