source: src/main/java/agents/anac/y2018/fullagent/AcceptanceStrategy_lgsmi.java

package agents.anac.y2018.fullagent;

import java.util.HashMap;
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 AcceptanceStrategy_lgsmi extends AcceptanceStrategy {


        private double a;
        private double b;

        /**
         * Empty constructor for the BOA framework.
         */

        public AcceptanceStrategy_lgsmi() {
        }

//      public AcceptanceStrategy_lgsmi(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;
        }



    public Map<String, Double> getParameters() {
        Map<String, Double> map = new HashMap<String, Double>();
        //Accept when the opponent's utility * a + b is greater than the utility of our current bid
        map.put("a", 1.0);
        map.put("b", 0.0);
        return map;
    }

        @Override
        public String getName() {
                return "AcceptanceStrategy_lgsmi";

        }
}