source: src/main/java/negotiator/boaframework/acceptanceconditions/other/AC_CombiV2.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 is the decoupled Acceptance Conditions Based on Tim Baarslag's paper on
 * Acceptance Conditions: "Acceptance Conditions in Automated Negotiation"
 * 
 * This Acceptance Conditions is a combination of AC_Time and AC_Next
 * 
 * Decoupling Negotiating Agents to Explore the Space of Negotiation Strategies
 * T. Baarslag, K. Hindriks, M. Hendrikx, A. Dirkzwager, C.M. Jonker
 * 
 * @author Alex Dirkzwager
 */
public class AC_CombiV2 extends AcceptanceStrategy {

        private double a;
        private double b;
        private double c;
        private double d;
        private double time;

        /**
         * Empty constructor for the BOA framework.
         */
        public AC_CombiV2() {
        }

        public AC_CombiV2(NegotiationSession negoSession, OfferingStrategy strat, double a, double b, double t, double c,
                        double d) {
                this.negotiationSession = negoSession;
                this.offeringStrategy = strat;
                this.a = a;
                this.b = b;
                this.c = c;
                this.d = d;
                this.time = t;
        }

        @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("t") != null) {
                        a = parameters.get("a");
                        b = parameters.get("b");
                        c = parameters.get("c");
                        d = parameters.get("d");
                        time = parameters.get("t");
                } else {
                        throw new Exception("Paramaters were not correctly set");
                }
        }

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

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

                if (lastOpponentBidUtil > d) {
                        return Actions.Accept;
                }

                if (negotiationSession.getDiscountFactor() != 0.0 && c < negotiationSession.getDiscountFactor()) {
                        if (a * lastOpponentBidUtil + b >= nextMyBidUtil) {
                                return Actions.Accept;
                        }
                } else {
                        if (a * lastOpponentBidUtil + b >= nextMyBidUtil && negotiationSession.getTime() >= time) {
                                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", 0.8, "Threshold discount"));
                set.add(new BOAparameter("d", 0.95, "Threshold"));
                set.add(new BOAparameter("t", 0.99, "Time"));

                return set;
        }

        @Override
        public String getName() {
                return "Other - CombiV2";
        }
}