[127] | 1 | package agents.anac.y2014.BraveCat.OfferingStrategies;
|
---|
| 2 |
|
---|
| 3 | import java.util.HashMap;
|
---|
| 4 | import java.util.Random;
|
---|
| 5 |
|
---|
| 6 | import agents.anac.y2014.BraveCat.OpponentModelStrategies.OMStrategy;
|
---|
| 7 | import agents.anac.y2014.BraveCat.OpponentModels.NoModel;
|
---|
| 8 | import agents.anac.y2014.BraveCat.OpponentModels.OpponentModel;
|
---|
| 9 | import agents.anac.y2014.BraveCat.necessaryClasses.BidGenerator;
|
---|
| 10 | import agents.anac.y2014.BraveCat.necessaryClasses.NegotiationSession;
|
---|
| 11 | import agents.anac.y2014.BraveCat.necessaryClasses.Schedular;
|
---|
| 12 | import genius.core.bidding.BidDetails;
|
---|
| 13 | import genius.core.utility.NonlinearUtilitySpace;
|
---|
| 14 |
|
---|
| 15 | public class BRTOfferingStrategy extends OfferingStrategy {
|
---|
| 16 | private BidGenerator bidGenerator;
|
---|
| 17 | private Random random300;
|
---|
| 18 | private BidDetails LastBestBid = null;
|
---|
| 19 | private double k;
|
---|
| 20 | private double Pmax;
|
---|
| 21 | private double Pmin;
|
---|
| 22 | private double e;// This value should be adjusted by the estimated
|
---|
| 23 | // concession value of the opponent.
|
---|
| 24 |
|
---|
| 25 | public BRTOfferingStrategy(NegotiationSession negoSession,
|
---|
| 26 | OpponentModel model, OMStrategy oms, double e, double k) {
|
---|
| 27 | random300 = new Random();
|
---|
| 28 | this.e = e;// beta value.
|
---|
| 29 | this.k = k;
|
---|
| 30 | this.negotiationSession = negoSession;
|
---|
| 31 | bidGenerator = new BidGenerator(negotiationSession);
|
---|
| 32 |
|
---|
| 33 | if (this.negotiationSession.getUtilitySpace() instanceof NonlinearUtilitySpace)
|
---|
| 34 | System.out.println("Nonlinear Utility Space!");
|
---|
| 35 | this.omStrategy = oms;
|
---|
| 36 | try {
|
---|
| 37 | this.Pmax = 1;
|
---|
| 38 | System.out.println("Pmax: " + this.Pmax);
|
---|
| 39 | this.Pmin = this.negotiationSession.getUtilitySpace()
|
---|
| 40 | .getReservationValueUndiscounted();
|
---|
| 41 | System.out.println("Pmin: " + this.Pmin);
|
---|
| 42 | this.schedular = new Schedular(negotiationSession);
|
---|
| 43 | } catch (Exception ex) {
|
---|
| 44 | System.out
|
---|
| 45 | .println("Exception occured when determining Pmax and Pmin!");
|
---|
| 46 | }
|
---|
| 47 | }
|
---|
| 48 |
|
---|
| 49 | @Override
|
---|
| 50 | public void init(NegotiationSession negoSession, OpponentModel model,
|
---|
| 51 | OMStrategy oms, HashMap<String, Double> parameters)
|
---|
| 52 | throws Exception {
|
---|
| 53 | if (parameters.get("e") != null) {
|
---|
| 54 | this.negotiationSession = negoSession;
|
---|
| 55 |
|
---|
| 56 | this.e = ((Double) parameters.get("e")).doubleValue();
|
---|
| 57 |
|
---|
| 58 | if (parameters.get("k") != null)
|
---|
| 59 | this.k = ((Double) parameters.get("k")).doubleValue();
|
---|
| 60 | else {
|
---|
| 61 | this.k = 0.0D;
|
---|
| 62 | }
|
---|
| 63 | if (parameters.get("min") != null)
|
---|
| 64 | this.Pmin = ((Double) parameters.get("min")).doubleValue();
|
---|
| 65 | else {
|
---|
| 66 | this.Pmin = negoSession.getMinBidinDomain()
|
---|
| 67 | .getMyUndiscountedUtil();
|
---|
| 68 | }
|
---|
| 69 | if (parameters.get("max") != null) {
|
---|
| 70 | this.Pmax = ((Double) parameters.get("max")).doubleValue();
|
---|
| 71 | } else {
|
---|
| 72 | BidDetails maxBid = negoSession.getMaxBidinDomain();
|
---|
| 73 | this.Pmax = maxBid.getMyUndiscountedUtil();
|
---|
| 74 | }
|
---|
| 75 |
|
---|
| 76 | this.opponentModel = model;
|
---|
| 77 | this.omStrategy = oms;
|
---|
| 78 | } else {
|
---|
| 79 | throw new Exception(
|
---|
| 80 | "Constant \"e\" for the concession speed was not set.");
|
---|
| 81 | }
|
---|
| 82 | }
|
---|
| 83 |
|
---|
| 84 | @Override
|
---|
| 85 | public BidDetails determineOpeningBid() {
|
---|
| 86 | BidDetails temp = null;
|
---|
| 87 | try {
|
---|
| 88 | temp = this.bidGenerator.selectBid(Pmax);
|
---|
| 89 | System.out.println("Opening Bid Utility is: "
|
---|
| 90 | + this.negotiationSession.getUtilitySpace().getUtility(
|
---|
| 91 | temp.getBid()));
|
---|
| 92 | } catch (Exception ex) {
|
---|
| 93 | }
|
---|
| 94 | return temp;
|
---|
| 95 | }
|
---|
| 96 |
|
---|
| 97 | @Override
|
---|
| 98 | public BidDetails determineNextBid() {
|
---|
| 99 | double time = this.negotiationSession.getTime();
|
---|
| 100 |
|
---|
| 101 | this.Pmin = this.negotiationSession.getUtilitySpace()
|
---|
| 102 | .getReservationValueWithDiscount(time);
|
---|
| 103 |
|
---|
| 104 | // If this is the last bid, the agent chooses to send the best bid
|
---|
| 105 | // received from the opponent, so as to avoid a break off,
|
---|
| 106 | // hoping that this bid is still acceptable for the opponent, and it
|
---|
| 107 | // will result in an agreement.
|
---|
| 108 | if (this.schedular.FinalRounds() || this.schedular.LastRound())
|
---|
| 109 | return negotiationSession.getOpponentBidHistory()
|
---|
| 110 | .getBestDiscountedBidDetails(
|
---|
| 111 | negotiationSession.getUtilitySpace());
|
---|
| 112 | double targetUtility = TargetUtilityGenerator(time, this.Pmax,
|
---|
| 113 | this.Pmin, this.e, this.k);
|
---|
| 114 | // System.out.println(targetUtility);
|
---|
| 115 | targetUtility = TargetUtilityRandomizer(targetUtility);
|
---|
| 116 | // System.out.println(targetUtility);
|
---|
| 117 | try {
|
---|
| 118 | targetUtility = BehaviouralTargetUtility(targetUtility);
|
---|
| 119 | } catch (Exception ex) {
|
---|
| 120 | System.out
|
---|
| 121 | .println("Exception occured when calculating behavioral target utility!");
|
---|
| 122 | }
|
---|
| 123 | // System.out.println(targetUtility);
|
---|
| 124 | try {
|
---|
| 125 | if (targetUtility > 1)
|
---|
| 126 | targetUtility = 1;
|
---|
| 127 | } catch (Exception ex) {
|
---|
| 128 | System.out
|
---|
| 129 | .println("Exception occured when bringing the target utility into the range!");
|
---|
| 130 | }
|
---|
| 131 |
|
---|
| 132 | // System.out.println(targetUtility);
|
---|
| 133 |
|
---|
| 134 | if ((this.opponentModel instanceof NoModel))
|
---|
| 135 | this.nextBid = this.negotiationSession.getOutcomeSpace()
|
---|
| 136 | .getBidNearUtility(targetUtility);
|
---|
| 137 | else {
|
---|
| 138 | try {
|
---|
| 139 | this.nextBid = this.omStrategy.getBid(this.bidGenerator
|
---|
| 140 | .NBidsNearUtility(targetUtility, 10));
|
---|
| 141 | } catch (Exception ex) {
|
---|
| 142 | }
|
---|
| 143 | }
|
---|
| 144 | return this.nextBid;
|
---|
| 145 | }
|
---|
| 146 |
|
---|
| 147 | public double BehaviouralTargetUtility(double targetUtility)
|
---|
| 148 | throws Exception {
|
---|
| 149 | if (LastBestBid == null) {
|
---|
| 150 | // System.out.println(this.negotiationSession.getOpponentBidHistory().size());
|
---|
| 151 | LastBestBid = this.negotiationSession.getOpponentBidHistory()
|
---|
| 152 | .getLastBidDetails();
|
---|
| 153 | return targetUtility;
|
---|
| 154 | } else {
|
---|
| 155 | if (this.negotiationSession.getUtilitySpace().getUtility(
|
---|
| 156 | LastBestBid.getBid()) < this.negotiationSession
|
---|
| 157 | .getUtilitySpace().getUtility(
|
---|
| 158 | this.negotiationSession.getOpponentBidHistory()
|
---|
| 159 | .getLastBid())) {
|
---|
| 160 | double NewUtility = targetUtility
|
---|
| 161 | - (this.negotiationSession.getUtilitySpace()
|
---|
| 162 | .getUtility(
|
---|
| 163 | this.negotiationSession
|
---|
| 164 | .getOpponentBidHistory()
|
---|
| 165 | .getLastBid()) - this.negotiationSession
|
---|
| 166 | .getUtilitySpace().getUtility(
|
---|
| 167 | LastBestBid.getBid()));
|
---|
| 168 | LastBestBid = this.negotiationSession.getOpponentBidHistory()
|
---|
| 169 | .getLastBidDetails();
|
---|
| 170 | // System.out.println(NewUtility - targetUtility);
|
---|
| 171 | return NewUtility;
|
---|
| 172 | }
|
---|
| 173 | }
|
---|
| 174 | return targetUtility;
|
---|
| 175 | }
|
---|
| 176 |
|
---|
| 177 | public double TargetUtilityRandomizer(double targetUtility) {
|
---|
| 178 | Random r = new Random();
|
---|
| 179 | double z = Math.abs(r.nextGaussian());
|
---|
| 180 | return targetUtility
|
---|
| 181 | - ((double) ((1 - targetUtility) * z * (1 - this.negotiationSession
|
---|
| 182 | .getTime())) / 2.58);
|
---|
| 183 | }
|
---|
| 184 |
|
---|
| 185 | public double TargetUtilityGenerator(double t, double Pmax, double Pmin,
|
---|
| 186 | double e, double k) {
|
---|
| 187 | double temp = Pmin + (Pmax - Pmin) * (1.0D - f(t, e, k));
|
---|
| 188 | return temp;
|
---|
| 189 | }
|
---|
| 190 |
|
---|
| 191 | public double f(double t, double e, double k) {
|
---|
| 192 | if (e == 0.0D)
|
---|
| 193 | return k;
|
---|
| 194 | double ft = k + (1.0D - k) * Math.pow(t, 1.0D / e);
|
---|
| 195 | return ft;
|
---|
| 196 | }
|
---|
| 197 |
|
---|
| 198 | public NegotiationSession getNegotiationSession() {
|
---|
| 199 | return this.negotiationSession;
|
---|
| 200 | }
|
---|
| 201 |
|
---|
| 202 | public double EstimateOpponentConcession() {
|
---|
| 203 | return 1 - ((double) this.negotiationSession.getOpponentBidHistory().numberOfUniqueBidsInBidHistory / this.negotiationSession
|
---|
| 204 | .getOpponentBidHistory().numberOfTotalBidsInBidHistory);
|
---|
| 205 | }
|
---|
| 206 |
|
---|
| 207 | @Override
|
---|
| 208 | public String GetName() {
|
---|
| 209 | return "BRTOfferingStrategy";
|
---|
| 210 | }
|
---|
| 211 | }
|
---|