source: src/test/java/bilateralexamples/boacomponents/AC_Next.java@ 209

package bilateralexamples.boacomponents;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import genius.core.boaframework.AcceptanceStrategy;
import genius.core.boaframework.Actions;
import genius.core.boaframework.BOAparameter;
import genius.core.boaframework.NegotiationSession;
import genius.core.boaframework.OfferingStrategy;
import genius.core.boaframework.OpponentModel;

/**
 * This Acceptance Condition will accept an opponent bid if the utility is
 * higher than the bid the agent is ready to present.
 * 
 * Decoupling Negotiating Agents to Explore the Space of Negotiation Strategies
 * T. Baarslag, K. Hindriks, M. Hendrikx, A. Dirkzwager, C.M. Jonker
 * 
 */
public class AC_Next extends AcceptanceStrategy {

        private double a;
        private double b;

        /**
         * Empty constructor for the BOA framework.
         */
        public AC_Next() {
        }

        public AC_Next(NegotiationSession negoSession, OfferingStrategy strat,
                        double alpha, double beta) {
                this.negotiationSession = negoSession;
                this.offeringStrategy = strat;
                this.a = alpha;
                this.b = beta;
        }

        @Override
        public void init(NegotiationSession negoSession, OfferingStrategy strat,
                        OpponentModel opponentModel, Map<String, Double> parameters)
                        throws Exception {
                this.negotiationSession = negoSession;
                this.offeringStrategy = strat;

                if (parameters.get("a") != null || parameters.get("b") != null) {
                        a = parameters.get("a");
                        b = parameters.get("b");
                } else {
                        a = 1;
                        b = 0;
                }
        }

        @Override
        public String printParameters() {
                String str = "[a: " + a + " b: " + b + "]";
                return str;
        }

        @Override
        public Actions determineAcceptability() {
                double nextMyBidUtil = offeringStrategy.getNextBid()
                                .getMyUndiscountedUtil();
                double lastOpponentBidUtil = negotiationSession.getOpponentBidHistory()
                                .getLastBidDetails().getMyUndiscountedUtil();

                if (a * lastOpponentBidUtil + b >= nextMyBidUtil) {
                        return Actions.Accept;
                }
                return Actions.Reject;
        }

        @Override
        public Set<BOAparameter> getParameterSpec() {

                Set<BOAparameter> set = new HashSet<BOAparameter>();
                set.add(new BOAparameter("a", 1.0,
                                "Accept when the opponent's utility * a + b is greater than the utility of our current bid"));
                set.add(new BOAparameter("b", 0.0,
                                "Accept when the opponent's utility * a + b is greater than the utility of our current bid"));

                return set;
        }

        @Override
        public String getName() {
                return "AC_Next example";
        }
}