[127] | 1 | package agents.anac.y2015.TUDMixedStrategyAgent;
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| 2 |
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| 3 | import java.util.ArrayList;
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| 4 |
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| 5 | import genius.core.AgentID;
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| 6 | import genius.core.Bid;
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| 7 |
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| 8 | public class Strategy {
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| 9 | // Just Static methods
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| 10 | private Strategy() {
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| 11 | super();
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| 12 | }
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| 13 | /*
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| 14 | * Generate the next Bid based on the Utility value for this round.
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| 15 | */
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| 16 | public static Bid calculateMyBid(TUDMixedStrategyAgent info) {
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| 17 | double U = nextBidUtility(info);
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| 18 | // Get a List of bids with this utility or more 10%
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| 19 | ArrayList<Bid> bidsInRange = BidGenerator.getBidsInRange(info.getPossibleBids(), U, U*1.1, info);
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| 20 | if(bidsInRange.isEmpty())
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| 21 | return null;
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| 22 | // Select the best bid for our opponents
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| 23 | return bidSelect(bidsInRange,info.getAgentUtilsList());
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| 24 | }
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| 25 |
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| 26 | // Receives a List of bids, and a list of agentUtils, selects the bid that maximizes the minimum utility over all agents
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| 27 | public static Bid bidSelect(ArrayList<Bid> bids, ArrayList<AgentUtils> agentUtils) {
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| 28 | Bid bestBid =null;
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| 29 | double bestBidUtil=0;
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| 30 | for(int i=0; i<bids.size();i++) {
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| 31 | double lowestUtil=1;
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| 32 | for(int j=0;j<agentUtils.size();j++) {
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| 33 | double currentUtil =agentUtils.get(j).getAgentUtil(bids.get(i));
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| 34 | if(currentUtil<lowestUtil)
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| 35 | lowestUtil=currentUtil;
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| 36 | }
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| 37 | if(bestBidUtil<lowestUtil) {
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| 38 | bestBid=bids.get(i);
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| 39 | bestBidUtil=lowestUtil;
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| 40 | }
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| 41 | }
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| 42 | if(bestBid==null)
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| 43 | bestBid=bids.get(0);
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| 44 | return bestBid;
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| 45 | }
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| 46 |
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| 47 |
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| 48 | // Returns the target utility of our Bid on this round-
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| 49 | public static double nextBidUtility(TUDMixedStrategyAgent info) {
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| 50 | return 1- ((double) info.getRoundN())/info.roundDeadline()*(1-info.getUtilitySpace().getReservationValue());
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| 51 |
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| 52 | }
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| 53 |
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| 54 | // Returns true if we should accept.
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| 55 | public static boolean acceptingConditions(TUDMixedStrategyAgent info) {
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| 56 | // Check if the offer we received has higher utility than our target utility
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| 57 | if(nextBidUtility(info)>lastOfferUtility(info)) {
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| 58 | return false;
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| 59 | }
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| 60 | // check if we received an offer that has larger utility than this one
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| 61 | else if(lastOfferUtility(info)<biggestReceivedOffer(info)) {
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| 62 | return false;
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| 63 | }
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| 64 | return true;
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| 65 | }
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| 66 |
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| 67 | // Returns true if we should offer a previously unaccepted offer.
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| 68 | public static boolean offerPreviousOffer(TUDMixedStrategyAgent info) {
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| 69 | if(nextBidUtility(info)<biggestReceivedOffer(info)) {
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| 70 | return true;
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| 71 | }
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| 72 | return false;
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| 73 | }
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| 74 |
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| 75 | // Returns the biggest received offer that we haven't resent
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| 76 | public static Bid bestPreviousBid(TUDMixedStrategyAgent info) {
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| 77 | Bid biggestBid = null;
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| 78 | double biggestUtil=0;
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| 79 | if(info.getPartylist().isEmpty())
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| 80 | return null;
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| 81 | for(int i=0; i<info.getPartylist().size();i++) {
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| 82 | AgentID agent = info.getPartylist().get(i);
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| 83 | for(int j=0;j<info.getBidhistory(agent).getHistory().size();j++) {
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| 84 | if(!info.getAlreadyProposed().contains(info.getBidhistory(agent).getHistory().get(j).getBid())){
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| 85 | if(biggestUtil<info.getBidhistory(agent).getHistory().get(j).getMyUndiscountedUtil()) {
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| 86 | biggestBid = info.getBidhistory(agent).getHistory().get(j).getBid();
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| 87 | biggestUtil= info.getBidhistory(agent).getHistory().get(j).getMyUndiscountedUtil();
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| 88 | }
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| 89 | }
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| 90 | }
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| 91 | }
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| 92 | return biggestBid;
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| 93 | }
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| 94 |
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| 95 | // Returns the utility of the biggest received offer, that hasn't been proposed by us.
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| 96 | public static double biggestReceivedOffer(TUDMixedStrategyAgent info) {
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| 97 |
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| 98 | double biggestUtil=0;
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| 99 | if(info.getPartylist().isEmpty())
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| 100 | return 0;
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| 101 | for(int i=0; i<info.getPartylist().size();i++) {
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| 102 | AgentID agent = info.getPartylist().get(i);
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| 103 | for(int j=0;j<info.getBidhistory(agent).getHistory().size();j++) {
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| 104 | if(!info.getAlreadyProposed().contains(info.getBidhistory(agent).getHistory().get(j).getBid())){
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| 105 | if(biggestUtil<info.getBidhistory(agent).getHistory().get(j).getMyUndiscountedUtil()) {
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| 106 | biggestUtil= info.getBidhistory(agent).getHistory().get(j).getMyUndiscountedUtil();
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| 107 | }
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| 108 | }
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| 109 | }
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| 110 | }
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| 111 | return biggestUtil;
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| 112 |
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| 113 | }
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| 114 |
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| 115 |
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| 116 |
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| 117 | // Returns the our Utility for the current offer
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| 118 |
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| 119 | public static double lastOfferUtility(TUDMixedStrategyAgent info) {
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| 120 | return info.getUtility(info.getLastbid());
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| 121 | }
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| 122 |
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| 123 |
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| 124 |
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| 125 | }
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