source: src/main/java/agents/anac/y2010/Southampton/similarity/VariableConcessionSimilarityAgent.java

package agents.anac.y2010.Southampton.similarity;

import agents.anac.y2010.Southampton.utils.concession.ConcessionFunction;
import agents.anac.y2010.Southampton.utils.concession.TimeConcessionFunction;
import genius.core.AgentParam;
import genius.core.tournament.VariablesAndValues.AgentParameterVariable;

/**
 * @author Colin Williams
 * A 'similarity' agent with a variable concession strategy.
 * 
 */
public class VariableConcessionSimilarityAgent extends SimilarityAgent {

        protected ConcessionFunction cf;

        /** (non-Javadoc)
         * @see agents.southampton.similarity.SimilarityAgent#getTargetUtility(double, double)
         */
        @Override
        protected double getTargetUtility(double myUtility, double oppntUtility) {
                try {
                        return getConcession(utilitySpace.getUtility(myPreviousBids.get(0)));
                } catch (Exception e) {
                        e.printStackTrace();
                        return 0;
                }
        }

        private double getConcession(double startUtility) {
                if (cf == null)
                        cf = new TimeConcessionFunction(parametervalues.get(new AgentParameterVariable(new AgentParam("common", "beta", 0.0, 10.0))).getValue(),
                                        TimeConcessionFunction.BREAKOFF);
                double currentTime = timeline.getTime() * timeline.getTotalTime() * 1000;
                double totalTime = timeline.getTotalTime() * 1000;
                return cf.getConcession(startUtility, Math.round(currentTime), totalTime);
        }
}