playground.johannes.coopsim.eval.JointActivityEvaluator2.java Source code

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Here is the source code for playground.johannes.coopsim.eval.JointActivityEvaluator2.java

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/* *********************************************************************** *
 * project: org.matsim.*
 * JointActivityEvaluator.java
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 * copyright       : (C) 2011 by the members listed in the COPYING,        *
 *                   LICENSE and WARRANTY file.                            *
 * email           : info at matsim dot org                                *
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 *   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.                                   *
 *   See also COPYING, LICENSE and WARRANTY file                           *
 *                                                                         *
 * *********************************************************************** */
package playground.johannes.coopsim.eval;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.math.stat.descriptive.DescriptiveStatistics;
import org.matsim.api.core.v01.population.Activity;
import org.matsim.api.core.v01.population.Person;

import playground.johannes.coopsim.pysical.Trajectory;
import playground.johannes.coopsim.pysical.VisitorTracker;
import playground.johannes.mz2005.io.ActivityType;
import playground.johannes.socialnetworks.graph.social.SocialGraph;
import playground.johannes.socialnetworks.graph.social.SocialVertex;

/**
 * @author illenberger
 *
 */
public class JointActivityEvaluator2 implements Evaluator {

    private double V_star;

    private final VisitorTracker tracker;

    private final Map<Person, SocialVertex> vertices;

    private final Map<Person, List<Person>> alters;

    private final double fVisit;

    private final double fCulture;

    private final double fGastro;

    private static boolean isLogging;

    private static DescriptiveStatistics stats;

    private static DescriptiveStatistics visitStats;

    private static DescriptiveStatistics cultureStats;

    private static DescriptiveStatistics gastroStats;

    public JointActivityEvaluator2(double V_start, VisitorTracker tracker, SocialGraph graph, double fVisit,
            double fCulture, double fGastro) {
        this.V_star = V_start;
        this.tracker = tracker;
        this.fVisit = fVisit;
        this.fCulture = fCulture;
        this.fGastro = fGastro;

        vertices = new HashMap<Person, SocialVertex>(graph.getVertices().size());
        alters = new HashMap<Person, List<Person>>(graph.getVertices().size());
        for (SocialVertex v : graph.getVertices()) {
            vertices.put(v.getPerson().getPerson(), v);
            List<Person> neighbours = new ArrayList<Person>(v.getNeighbours().size());
            for (SocialVertex alter : v.getNeighbours()) {
                neighbours.add(alter.getPerson().getPerson());
            }
            alters.put(v.getPerson().getPerson(), neighbours);
        }
    }

    @Override
    public double evaluate(Trajectory trajectory) {
        double score = 0;

        String type = ((Activity) trajectory.getElements().get(2)).getType();
        List<Person> alterList = alters.get(trajectory.getPerson());

        int n = tracker.metAlters(trajectory.getPerson(), alterList);
        if (n >= 1 && V_star > 0) {
            double f_star = 0;

            if (type.equals(ActivityType.visit.name())) {
                f_star = fVisit;
            } else if (type.equals(ActivityType.culture.name())) {
                f_star = fCulture;
            } else if (type.equals(ActivityType.gastro.name())) {
                f_star = fGastro;
            } else if (type.equals(ActivityType.home.name())) {
                f_star = 0;
            } else {
                throw new IllegalArgumentException(
                        String.format("Unknown activity type in joint activity scoring (%1$s).", type));
            }

            if (f_star > 0) {
                // round f_start to a realizable value
                double n_star = Math.round(f_star * alterList.size());
                n_star = Math.max(n_star, 1);
                f_star = n_star / (double) alterList.size();

                double f = n / (double) alterList.size();

                //            V_star = V_star/Math.log(2) * Math.log(f_star + 1);
                score = -(V_star / (f_star * f_star)) * Math.pow((f - f_star), 2) + V_star;

                if (Double.isNaN(score)) {
                    throw new RuntimeException("Joint score is NaN.");
                } else if (Double.isInfinite(score)) {
                    throw new RuntimeException("Joint score is infty.");
                }
            } else {
                score = 0;
            }
        } else {
            score = 0;
        }

        if (isLogging && !type.equals(ActivityType.home.name())) {
            stats.addValue(score);
            if (type.equals(ActivityType.visit.name())) {
                visitStats.addValue(score);
            } else if (type.equals(ActivityType.culture.name())) {
                cultureStats.addValue(score);
            } else if (type.equals(ActivityType.gastro.name())) {
                gastroStats.addValue(score);
            }
        }

        return score;
    }

    public static void startLogging() {
        stats = new DescriptiveStatistics();
        visitStats = new DescriptiveStatistics();
        cultureStats = new DescriptiveStatistics();
        gastroStats = new DescriptiveStatistics();
        isLogging = true;
    }

    public static Map<String, DescriptiveStatistics> stopLogging() {
        Map<String, DescriptiveStatistics> map = new HashMap<String, DescriptiveStatistics>(4);
        map.put("all", stats);
        map.put(ActivityType.visit.name(), visitStats);
        map.put(ActivityType.culture.name(), cultureStats);
        map.put(ActivityType.gastro.name(), gastroStats);
        isLogging = false;
        return map;
    }

}