source: src/main/java/negotiator/boaframework/sharedagentstate/anac2012/AgentMRSAS.java

package negotiator.boaframework.sharedagentstate.anac2012;

import java.util.ArrayList;

import genius.core.Bid;
import genius.core.boaframework.NegotiationSession;
import genius.core.boaframework.SharedAgentState;

/**
 * This is the shared code of the acceptance condition and bidding strategy of ANAC2012 AgentMR.
 * The code was taken from the ANAC2012 Agent MR and adapted to work within the BOA framework.
 * 
 * @author Alex Dirkzwager
 */
public class AgentMRSAS extends SharedAgentState {
        
        private NegotiationSession negotiationSession;
        private double sigmoidGain;
        private double sigmoidX;
        private double reservation = 0.0;
        private double alpha;
        private double percent;
        private double p = 0.90;
        private static double minimumBidUtility;
        private static double minimumOffereDutil;
        private ArrayList<Bid> bidRunk = new ArrayList<Bid>();
        double firstOffereUtility; 
        boolean calulatedFirstBidUtility = false;

        public AgentMRSAS (NegotiationSession negoSession) {
                negotiationSession = negoSession;
                NAME = "AgentMR";       
        }

        public ArrayList<Bid> getBidRunk() {
                return bidRunk;
        }

        public void setBidRunk(ArrayList<Bid> bidRunk) {
                this.bidRunk = bidRunk;
        }
        
        public void updateMinimumBidUtility(double time) {
                alpha = (1.0 - getFirstOffereUtility()) * percent; 
                //System.out.println("Decoupled percent: " + percent);
                //System.out.println("Decoupled alpha: " + alpha);
                //System.out.println("Decoupled sigmoidGain: " + sigmoidGain);


                double mbuInfimum = getFirstOffereUtility() + alpha;


                if (mbuInfimum >= 1.0) {
                        mbuInfimum = 0.999; 
                } else if (mbuInfimum <= 0.70) {
                        mbuInfimum = 0.70; 
                }
                sigmoidX = 1 - ((1 / sigmoidGain) * Math.log(mbuInfimum / (1 - mbuInfimum)));

                minimumBidUtility = 1 - (1 / (1 + Math.exp(sigmoidGain
                                * (time - sigmoidX)))); 
                //System.out.println("Decoupled sigmoidX: " + sigmoidX);
                //System.out.println("Decoupled sigmoidGain: " + sigmoidGain);

                if (minimumBidUtility < reservation) { 
                        minimumBidUtility = reservation;
                }

                minimumOffereDutil =  minimumBidUtility * p;

        }
        
        public void calculateFirstOffereUtility(){
                if (negotiationSession.getUtilitySpace().isDiscounted()) {
                        firstOffereUtility = negotiationSession.getOpponentBidHistory().getFirstBidDetails().getMyUndiscountedUtil()
                                        * (1 / Math.pow(negotiationSession.getUtilitySpace().getDiscountFactor(),
                                                        negotiationSession.getOpponentBidHistory().getFirstBidDetails().getTime()));
                } else {
                        firstOffereUtility = negotiationSession.getOpponentBidHistory().getFirstBidDetails().getMyUndiscountedUtil();
                }
        }       
        

        public double getFirstOffereUtility(){
                return firstOffereUtility;
        }
        
        public void setFirstOffereUtility(double value){
                firstOffereUtility = value;
        }
        
        public double getSigmoidGain() {
                return sigmoidGain;
        }

        public void setSigmoidGain(double sigmoidGain) {
                this.sigmoidGain = sigmoidGain;
        }

        public NegotiationSession getNegotiationSession() {
                return negotiationSession;
        }

        public void setNegotiationSession(NegotiationSession negotiationSession) {
                this.negotiationSession = negotiationSession;
        }

        public double getSigmoidX() {
                return sigmoidX;
        }

        public void setSigmoidX(double sigmoidX) {
                this.sigmoidX = sigmoidX;
        }

        public double getReservation() {
                return reservation;
        }

        public void setReservation(double reservation) {
                this.reservation = reservation;
        }

        public double getAlpha() {
                return alpha;
        }

        public void setAlpha(double alpha) {
                this.alpha = alpha;
        }

        public double getP() {
                return p;
        }

        public void setP(double p) {
                this.p = p;
        }

        public double getMinimumBidUtility() {
                return minimumBidUtility;
        }

        public double getMinimumOffereDutil() {
                return minimumOffereDutil;
        }

        public double getPercent() {
                return percent;
        }

        public void setPercent(double percent) {
                this.percent = percent;
        }
}