[126] | 1 | package agents;
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| 2 |
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| 3 | import java.util.List;
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| 4 |
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| 5 | import genius.core.Bid;
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| 6 | import genius.core.actions.Accept;
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| 7 | import genius.core.actions.Action;
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| 8 | import genius.core.actions.Offer;
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| 9 | import genius.core.parties.AbstractNegotiationParty;
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| 10 | import genius.core.uncertainty.AdditiveUtilitySpaceFactory;
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| 11 | import genius.core.uncertainty.ExperimentalUserModel;
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| 12 | import genius.core.utility.AbstractUtilitySpace;
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| 13 |
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| 14 | public class UncertaintyAgentExample extends AbstractNegotiationParty
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| 15 | {
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| 16 |
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| 17 | @Override
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| 18 | public Action chooseAction(List<Class<? extends Action>> possibleActions)
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| 19 | {
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| 20 | log("This is the UncertaintyAgentExample.");
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| 21 | log("The user model is: " + userModel);
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| 22 | log("The default estimated utility space is: " + getUtilitySpace());
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| 23 |
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| 24 | Bid randomBid = getUtilitySpace().getDomain().getRandomBid(rand);
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| 25 | log("The default estimate of the utility of a random bid + " + randomBid + " is: " + getUtility(randomBid));
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| 26 |
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| 27 | if (userModel instanceof ExperimentalUserModel)
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| 28 | {
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| 29 | log("You have given the agent access to the real utility space for debugging purposes.");
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| 30 | ExperimentalUserModel e = (ExperimentalUserModel) userModel;
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| 31 | AbstractUtilitySpace realUSpace = e.getRealUtilitySpace();
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| 32 |
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| 33 | log("The real utility space is: " + realUSpace);
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| 34 | log("The real utility of the random bid is: " + realUSpace.getUtility(randomBid));
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| 35 | }
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| 36 |
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| 37 | // Sample code that accepts offers that appear in the top 10% of offers in the user model
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| 38 | if (getLastReceivedAction() instanceof Offer)
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| 39 | {
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| 40 | Bid receivedBid = ((Offer) getLastReceivedAction()).getBid();
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| 41 | List<Bid> bidOrder = userModel.getBidRanking().getBidOrder();
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| 42 |
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| 43 | // If the rank of the received bid is known
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| 44 | if (bidOrder.contains(receivedBid))
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| 45 | {
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| 46 | double percentile = (bidOrder.size() - bidOrder.indexOf(receivedBid)) / (double) bidOrder.size();
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| 47 | if (percentile < 0.1)
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| 48 | return new Accept(getPartyId(), receivedBid);
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| 49 | }
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| 50 | }
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| 51 |
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| 52 | // Otherwise, return a random offer
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| 53 | return new Offer(getPartyId(), generateRandomBid());
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| 54 | }
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| 55 |
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| 56 | private void log(String s)
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| 57 | {
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| 58 | System.out.println(s);
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| 59 | }
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| 60 |
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| 61 | /**
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| 62 | * With this method, you can override the default estimate of the utility space given uncertain preferences specified by the user model.
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| 63 | * This example sets every value to zero.
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| 64 | */
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| 65 | @Override
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| 66 | public AbstractUtilitySpace estimateUtilitySpace()
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| 67 | {
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| 68 | return new AdditiveUtilitySpaceFactory(getDomain()).getUtilitySpace();
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| 69 | }
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| 70 |
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| 71 |
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| 72 | @Override
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| 73 | public String getDescription()
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| 74 | {
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| 75 | return "Example agent that can deal with uncertain preferences";
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| 76 | }
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| 77 |
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| 78 | }
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