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RankSys module, providing interfaces and common components for defining metrics.

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/* 
 * Copyright (C) 2015 Information Retrieval Group at Universidad Autónoma
 * de Madrid, http://ir.ii.uam.es
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package es.uam.eps.ir.ranksys.metrics;

import es.uam.eps.ir.ranksys.core.Recommendation;

/**
 * Recommendation metric: assigns a score for each recommendation list.
 *
 * @author Saúl Vargas ([email protected])
 * @author Pablo Castells ([email protected])
 * 
 * @param  type of the users
 * @param  type of the items
 */
public interface RecommendationMetric {
    
    /**
     * Returns a score for the recommendation list.
     *
     * @param recommendation recommendation list
     * @return score of the metric to the recommendation
     */
    public double evaluate(Recommendation recommendation);
}