source: src/main/java/negotiator/boaframework/acceptanceconditions/other/AC_CombiV4.java

package negotiator.boaframework.acceptanceconditions.other;

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 uses two versions of AC_next. The used AC_next
 * depends on if the discount of the domain is (non)-negligible. The parameter e
 * determines when a domain is marked as discounted or not.
 * 
 * Decoupling Negotiating Agents to Explore the Space of Negotiation Strategies
 * T. Baarslag, K. Hindriks, M. Hendrikx, A. Dirkzwager, C.M. Jonker
 * 
 * @author Alex Dirkzwager, Mark Hendrikx
 */
public class AC_CombiV4 extends AcceptanceStrategy {

        private double a;
        private double b;
        private double c;
        private double d;
        private double e;
        private boolean discountedDomain;

        /**
         * Empty constructor for the BOA framework.
         */
        public AC_CombiV4() {
        }

        public AC_CombiV4(NegotiationSession negoSession, OfferingStrategy strat, double a, double b, double c, double d,
                        double e) {

                this.negotiationSession = negoSession;
                this.offeringStrategy = strat;
                this.a = a;
                this.b = b;
                this.c = c;
                this.d = d;
                this.e = e;

                if (negotiationSession.getDiscountFactor() < 0.00001 || negotiationSession.getDiscountFactor() > e) {
                        discountedDomain = false;
                } else {
                        discountedDomain = true;
                }
        }

        @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
                                || parameters.get("c") != null && parameters.get("d") != null && parameters.get("e") != null) {
                        a = parameters.get("a");
                        b = parameters.get("b");
                        c = parameters.get("c");
                        d = parameters.get("d");
                        e = parameters.get("e");
                        if (negotiationSession.getDiscountFactor() < 0.00001 || negotiationSession.getDiscountFactor() > e) {
                                discountedDomain = false;
                        } else {
                                discountedDomain = true;
                        }
                } else {
                        throw new Exception("Paramaters were not correctly set");
                }
        }

        @Override
        public String printParameters() {
                return "[a: " + a + " b: " + b + " c: " + c + " d: " + d + " e: " + e + "]";
        }

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

                double target = 0;
                if (!discountedDomain) {
                        // no discount mode
                        target = a * lastOpponentBidUtil + b;
                } else {
                        // discount mode
                        target = c * lastOpponentBidUtil + d;
                }
                if (target > 1.0) {
                        target = 1.0;
                }

                if (target >= 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, "Multiplier"));
                set.add(new BOAparameter("b", 0.0, "Constant"));
                set.add(new BOAparameter("c", 1.0, "Multiplier discount"));
                set.add(new BOAparameter("d", 0.0, "Constant discount"));
                set.add(new BOAparameter("e", 0.8, "Threshold discount"));

                return set;
        }

        @Override
        public String getName() {
                return "Other - CombiV4";
        }
}