source: src/main/java/agents/anac/y2017/tucagent/OpponentModel.java

package agents.anac.y2017.tucagent;

import genius.core.Bid;
import genius.core.BidIterator;
import genius.core.Domain;

public class OpponentModel {
        public OpponentModel() {
        }

        private boolean isCrashed = false;
        protected Domain fDomain;
        public java.util.ArrayList<Bid> fBiddingHistory;

        public Domain getDomain() {
                return fDomain;
        }

        Double minUtility = null;
        Double maxUtility = null;

        public double getExpectedUtility(Bid pBid) throws Exception {
                return -1.0D;
        }

        public double getNormalizedUtility(Bid pBid) throws Exception {
                double u = getExpectedUtility(pBid);
                if ((minUtility == null) || (maxUtility == null))
                        findMinMaxUtility();
                double value = (u - minUtility.doubleValue()) / (maxUtility.doubleValue() - minUtility.doubleValue());
                if (Double.isNaN(value)) {
                        if (!isCrashed) {
                                isCrashed = true;
                                System.err.println("Bayesian scalable encountered NaN and therefore crashed");
                        }
                        return 0.0D;
                }

                return (u - minUtility.doubleValue()) / (maxUtility.doubleValue() - minUtility.doubleValue());
        }

        public void updateBeliefs(Bid pBid) throws Exception {
        }

        public double getExpectedWeight(int pIssueNumber) {
                return 0.0D;
        }

        public boolean haveSeenBefore(Bid pBid) {
                for (Bid tmpBid : fBiddingHistory) {
                        if (pBid.equals(tmpBid))
                                return true;
                }
                return false;
        }

        protected void findMinMaxUtility() throws Exception {
                BidIterator biditer = new BidIterator(fDomain);
                minUtility = Double.valueOf(1.0D);
                maxUtility = Double.valueOf(0.0D);

                while (biditer.hasNext()) {
                        Bid b = biditer.next();
                        double u = getExpectedUtility(b);

                        if (minUtility.doubleValue() > u)
                                minUtility = Double.valueOf(u);
                        if (maxUtility.doubleValue() < u)
                                maxUtility = Double.valueOf(u);
                }
        }

        public boolean isCrashed() {
                return isCrashed;
        }
}