package org.grouplens.lenskit.baseline;

import org.grouplens.lenskit.vectors.MutableSparseVector;
import org.grouplens.lenskit.vectors.SparseVector;

import java.util.Collection;

/**
 * Abstract implementation of BaselinePredictor.
 * @author Michael Ekstrand
 */
public abstract class AbstractBaselinePredictor implements BaselinePredictor {
    /**
     * Implement new-vector predict in terms of
     * {@link #predict(long, SparseVector, MutableSparseVector)}.
     */
    public MutableSparseVector predict(long user, SparseVector ratings, Collection<Long> items) {
        MutableSparseVector v = new MutableSparseVector(items);
        predict(user, ratings, v);
        return v;
    }

    public void predict(long user, SparseVector ratings, MutableSparseVector output) {
        predict(user, ratings, output, true);
    }
}

@@ -1,8 +1,879 @@
+/*%0A * LensKit, an open source recommender systems toolkit.%0A * Copyright 2010-2012 Regents of the University of Minnesota and contributors%0A *%0A * This program is free software; you can redistribute it and/or modify%0A * it under the terms of the GNU Lesser General Public License as%0A * published by the Free Software Foundation; either version 2.1 of the%0A * License, or (at your option) any later version.%0A *%0A * This program is distributed in the hope that it will be useful, but WITHOUT%0A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS%0A * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more%0A * details.%0A *%0A * You should have received a copy of the GNU General Public License along with%0A * this program; if not, write to the Free Software Foundation, Inc., 51%0A * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.%0A */%0A
 package 

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