egat.cli.replicatordynamics.ReplicatorDynamicsCommandHandler.java Source code

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Here is the source code for egat.cli.replicatordynamics.ReplicatorDynamicsCommandHandler.java

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/*
 * ReplicatorDynamicsCommandHandler.java
 *
 * Copyright (C) 2006-2009 Patrick R. Jordan
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
package egat.cli.replicatordynamics;

import egat.game.*;
import egat.cli.AbstractGameCommandHandler;
import egat.cli.CommandProcessingException;
import egat.gamexml.ProfileWriter;
import egat.replicatordynamics.SymmetricReplicatorDynamics;
import org.apache.commons.cli2.Option;
import org.apache.commons.cli2.CommandLine;
import org.apache.commons.cli2.builder.GroupBuilder;
import org.apache.commons.cli2.builder.DefaultOptionBuilder;
import org.apache.commons.cli2.builder.ArgumentBuilder;
import org.apache.commons.cli2.builder.CommandBuilder;

import java.io.PrintStream;
import java.io.IOException;
import java.util.Arrays;

/**
 * @author Patrick Jordan
 */
public class ReplicatorDynamicsCommandHandler extends AbstractGameCommandHandler {
    private Option verboseOption;

    private boolean verbose;

    private Option maxIterationOption;

    private int maxIteration;

    private Option toleranceOption;

    private double tolerance;

    @Override
    protected void addAdditionalChildOptions(GroupBuilder groupBuilder) {
        final DefaultOptionBuilder defaultOptionBuilder = new DefaultOptionBuilder();
        final ArgumentBuilder argumentBuilder = new ArgumentBuilder();

        verboseOption = defaultOptionBuilder.withShortName("v").withLongName("verbose")
                .withDescription("prints info for each iteration").create();

        groupBuilder.withOption(verboseOption);

        toleranceOption = defaultOptionBuilder.withLongName("tolerance")
                .withArgument(argumentBuilder.withMinimum(1).withMaximum(1).withName("tol").create())
                .withDescription("minimum update L-infinity distance").create();

        groupBuilder.withOption(toleranceOption);

        maxIterationOption = defaultOptionBuilder.withLongName("max-iterations")
                .withArgument(argumentBuilder.withMinimum(1).withMaximum(1).withName("i").create())
                .withDescription("maximum iterations to run").create();

        groupBuilder.withOption(maxIterationOption);
    }

    @Override
    protected void handleAdditionalChildOptions(CommandLine commandLine) throws CommandProcessingException {
        verbose = commandLine.hasOption(verboseOption);

        tolerance = Double.parseDouble(commandLine.getValue(toleranceOption).toString());

        maxIteration = Integer.parseInt(commandLine.getValue(maxIterationOption).toString());
    }

    protected void processSymmetricGame(MutableSymmetricGame game) throws CommandProcessingException {
        try {
            PrintStream printStream = null;

            if (verbose) {
                printStream = System.err;
            }

            SymmetricReplicatorDynamics symmetricReplicatorDynamics = new SymmetricReplicatorDynamics(tolerance,
                    maxIteration, printStream);
            Strategy strategy = symmetricReplicatorDynamics.run(game, null);
            Player[] players = game.players().toArray(new Player[0]);
            Strategy[] strategies = new Strategy[players.length];
            Arrays.fill(strategies, strategy);

            ProfileWriter writer = new ProfileWriter(System.out);
            try {
                writer.write(Games.createProfile(players, strategies));
            } catch (IOException e) {
                throw new CommandProcessingException(e);
            }
        } catch (NonexistentPayoffException e) {
            System.err.println(String.format("Could not calculate regret. %s", e.getMessage()));
        }

    }

    protected void processStrategicGame(MutableStrategicGame game) throws CommandProcessingException {
        throw new UnsupportedOperationException("replicator dynamics requires a symmetric game");
    }

    protected String getCommandName() {
        return "rd";
    }

    @Override
    protected void addCommandDescription(CommandBuilder commandBuilder) {
        commandBuilder.withDescription("find sample NE using replicator dynamics");
    }
}