source: src/main/java/parties/in4010/q12015/group7/MultipleIssueEstimator.java@ 126

package parties.in4010.q12015.group7;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import genius.core.AgentID;
import genius.core.Bid;
import genius.core.BidHistory;
import genius.core.bidding.BidDetails;

/**
 * Keep track of IssueEstimators of multiple opponents with the
 * MultipleIssueEstimator
 * 
 * @author svanbekhoven
 *
 */
public class MultipleIssueEstimator {
        /**
         * BidHistories of all opponents
         */
        private HashMap<AgentID, IssueEstimator> issueEstimators;

        /**
         * IssueEstimator sensitivity parameter
         */
        private double n;

        /**
         * Constructor
         * 
         * @param n
         *            sensitivity parameter
         */
        public MultipleIssueEstimator(double n) {
                this.n = n;
                this.issueEstimators = new HashMap<AgentID, IssueEstimator>();
        }

        /**
         * Add a bid to the issueEstimator of a particular agent
         * 
         * @param agentId
         * @param bidDetails
         * @param bidHistory
         */
        public void addBid(AgentID agentId, BidDetails bidDetails,
                        BidHistory bidHistory) {
                if (!this.issueEstimators.containsKey(agentId)) {
                        this.issueEstimators.put(agentId, new IssueEstimator(this.n));
                }
                this.issueEstimators.get(agentId).addBid(bidDetails.getBid(),
                                bidHistory);
        }

        /**
         * Returns the issueEstimator of a particular agent
         * 
         * @param agentId
         * @return
         */
        public IssueEstimator getIssueEstimator(AgentID agentId) {
                return issueEstimators.get(agentId);
        }

        /**
         * Returns all issueEstimators
         * 
         * @return
         */
        public HashMap<AgentID, IssueEstimator> getIssueEstimators() {
                return issueEstimators;
        }

        /**
         * Returns the average estimated utility of a bid for all opponents
         * 
         * @param bid
         * @return
         */
        public double getAverageUtility(Bid bid) {
                double sum = 0;
                for (Map.Entry<AgentID, IssueEstimator> entry : issueEstimators
                                .entrySet()) {
                        sum += entry.getValue().getUtility(bid);
                }

                return sum / issueEstimators.size();
        }

        /**
         * Returns the set of AgentIds in this MultipleIssueEstimator
         * 
         * @return
         */
        public Set<AgentID> getAgentIds() {
                return this.issueEstimators.keySet();
        }
}