source: src/main/java/negotiator/boaframework/acceptanceconditions/anac2010/AC_AgentSmith.java

package negotiator.boaframework.acceptanceconditions.anac2010;

import java.util.Map;

import genius.core.bidding.BidDetails;
import genius.core.boaframework.AcceptanceStrategy;
import genius.core.boaframework.Actions;
import genius.core.boaframework.NegotiationSession;
import genius.core.boaframework.OfferingStrategy;
import genius.core.boaframework.OpponentModel;

/**
 * This is the decoupled Acceptance Condition from AgentSmith (ANAC2010). The
 * code was taken from the ANAC2010 AgentSmith and adapted to work within the
 * BOA framework.
 * 
 * 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
 * @version 26/12/11
 */
public class AC_AgentSmith extends AcceptanceStrategy {

        private final double ACCEPT_MARGIN = 0.9;

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

        public AC_AgentSmith(NegotiationSession negoSession, OfferingStrategy strat) throws Exception {
                init(negoSession, strat, null, null);
        }

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

        @Override
        public Actions determineAcceptability() {
                BidDetails lastOpponentBid = negotiationSession.getOpponentBidHistory().getLastBidDetails();
                BidDetails lastOwnBid = negotiationSession.getOwnBidHistory().getLastBidDetails();

                if (lastOpponentBid != null && lastOwnBid != null) {
                        // accepts if the opponentLastBid is higher than the constant
                        // acceptMargin OR
                        // the utility of the opponents' bid is higher then ours -> accept!
                        if (lastOpponentBid.getMyUndiscountedUtil() > ACCEPT_MARGIN
                                        || lastOpponentBid.getMyUndiscountedUtil() >= lastOwnBid.getMyUndiscountedUtil()) {
                                return Actions.Accept;
                        }
                }
                return Actions.Reject;
        }

        @Override
        public String getName() {
                return "2010 - AgentSmith";
        }
}