// Copyright (C) 2010, 2011 Zeno Gantner, Chris Newell
//
// This file is part of MyMediaLite.
//
// MyMediaLite 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.
//
// MyMediaLite 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 MyMediaLite.  If not, see <http://www.gnu.org/licenses/>.

package org.mymedialite.data;

import java.util.List;

/**
 * Generic dataset splitter interface.
 * @version 2.03
 */
public interface ISplit<T> {

  /**
   * The number of folds in this split.
   * @return The number of folds in this split
   */
  int numberOfFolds();

  /**
   * Training data for the different folds.
   * @return A list of T
   */
  List<T> train();

  /**
   * Test data for the different folds.
   * @return A list of T
   */
  List<T> test();

}