source: src/main/java/agents/anac/y2017/agentkn/etc/negotiationStrategy.java

package agents.anac.y2017.agentkn.etc;

import java.util.ArrayList;
import java.util.Iterator;

import genius.core.Bid;
import genius.core.utility.AbstractUtilitySpace;

public class negotiationStrategy {
        private AbstractUtilitySpace utilitySpace;
        private negotiationInfo negotiationInfo;
        private double rv = 0.0; // 留保価格

        private boolean isPrinting = false; // デバッグ用

        public negotiationStrategy(AbstractUtilitySpace utilitySpace, negotiationInfo negotiationInfo, boolean isPrinting) {
                this.utilitySpace = utilitySpace;
                this.negotiationInfo = negotiationInfo;
                this.isPrinting = isPrinting;
                rv = utilitySpace.getReservationValue();
        }

        // 受容判定
        public boolean selectAccept(Bid offeredBid, double time) {
                try {
                        if (utilitySpace.getUtility(offeredBid) >= getThreshold(time)) {
                                return true;
                        } else {
                                return false;
                        }
                } catch (Exception e) {
                        System.out.println("受容判定に失敗しました");
                        e.printStackTrace();
                        return false;
                }
        }

        // 交渉終了判定
        public boolean selectEndNegotiation(double time) {
                return false;
        }

        // 閾値を返す
        public double getThreshold(double time) {
                System.out.println("time : " + time);
                double threshold = 1.0D;
                double mi = 0.0D;
                double ave = 0.0D;
                double extra = 0.0D;
                ArrayList opponents = negotiationInfo.getOpponents();

                double sd;
                for (Iterator i = opponents.iterator(); i.hasNext(); extra = sd) {
                        Object sender = i.next();
                        if (negotiationInfo.getPartnerBidNum(sender) % 10 == 0) {
                                ave = 0.0D;
                                extra = 0.0D;
                        }

                        double m = negotiationInfo.getAverage(sender);
                        sd = negotiationInfo.getStandardDeviation(sender);
                        ave = m;
                }

                double c = 1.0D - Math.pow(time, 5D);
                double emax = emax();
                threshold = 1 - (1 - emax) * Math.pow(time, 5D);

                return threshold;
        }

        private double emax() {
                double ave = 0.0D;
                double extra = 0.0D;
                ArrayList opponents = negotiationInfo.getOpponents();

                double sd = 0.0D;
                for (Iterator i = opponents.iterator(); i.hasNext(); extra = sd) {
                        Object sender = i.next();
                        if (negotiationInfo.getPartnerBidNum(sender) % 10 == 0) {
                                ave = 0.0D;
                                extra = 0.0D;
                        }

                        double m = negotiationInfo.getAverage(sender);
                        sd = negotiationInfo.getStandardDeviation(sender);
                        ave = m;
                }

                double d = Math.sqrt(3) * sd / Math.sqrt(ave * (1 - ave));

                return 0.7D * ave + (1 - ave) * d * 0.7D;
        }
}