///////////////////////////////////////////////////////////////////////////////
// For information as to what this class does, see the Javadoc, below.       //
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,       //
// 2007, 2008, 2009, 2010, 2014, 2015, 2022 by Peter Spirtes, Richard        //
// Scheines, Joseph Ramsey, and Clark Glymour.                               //
//                                                                           //
// 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 2 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA //
///////////////////////////////////////////////////////////////////////////////

package edu.cmu.tetrad.test;

import edu.cmu.tetrad.data.ContinuousVariable;
import edu.cmu.tetrad.data.DataSet;
import edu.cmu.tetrad.graph.*;
import edu.cmu.tetrad.sem.*;
import edu.cmu.tetrad.util.RandomUtil;
import org.junit.Test;

import java.util.ArrayList;
import java.util.List;

import static org.junit.Assert.assertEquals;


/**
 * Tests the MeasurementSimulator class using diagnostics devised by Richard
 * Scheines. The diagnostics are described in the Javadocs, below.
 *
 * @author josephramsey
 */
public class TestDagScorer {

    @Test
    public void test1() {
        RandomUtil.getInstance().setSeed(492839483L);

        List<Node> nodes = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            nodes.add(new ContinuousVariable("X" + (i + 1)));
        }

        Graph dag = new Dag(RandomGraph.randomGraph(nodes, 0, 10,
                30, 15, 15, false));

        SemPm pm = new SemPm(dag);
        SemIm im = new SemIm(pm);
        DataSet data = im.simulateData(1000, false);

        GraphUtils.replaceNodes(dag, data.getVariables());

        SemEstimator est = new SemEstimator(data, pm);
        SemIm estSem = est.estimate();
        double fml = estSem.getScore();

        assertEquals(0.04, fml, 0.03);

        dag = GraphUtils.replaceNodes(dag, data.getVariables());

        Scorer scorer = new DagScorer(data);
        double _fml = scorer.score(dag);

//        assertEquals(0.04, _fml, 0.01);

        double bicScore = scorer.getBicScore();
        assertEquals(-210, bicScore, 10);

        int dof = scorer.getDof();
        assertEquals(35, dof);
        int numFreeParams = scorer.getNumFreeParams();
        assertEquals(20, numFreeParams);
    }
}


