source: src/main/java/parties/in4010/q12015/group13/DiscreteIssueModel.java@ 33

package parties.in4010.q12015.group13;

import java.util.HashMap;

import genius.core.issue.IssueDiscrete;
import genius.core.issue.ValueDiscrete;

public class DiscreteIssueModel implements IssueModel<ValueDiscrete> {

        private HashMap<ValueDiscrete, Integer> frequency;

        public DiscreteIssueModel(IssueDiscrete i) {
                frequency = new HashMap(i.getNumberOfValues());

                for (ValueDiscrete v : i.getValues()) {
                        frequency.put(v, 0);
                }
        }

        @Override
        public void addBid(ValueDiscrete v) {
                int f = frequency.get(v);

                frequency.put(v, f + 1);
        }

        @Override
        public double estimateUtility(ValueDiscrete v) {
                Integer max = Util.getMaximum(frequency.values());

                return frequency.get(v) / (double) max;
        }

        @Override
        public String toString() {
                String ret = "";

                Integer max = Util.getMaximum(frequency.values());

                if (max == 0) {
                        return "Not enough data\n";
                }

                for (ValueDiscrete v : frequency.keySet()) {
                        ret += "   " + v.toString() + " : " + frequency.get(v)
                                        / (double) max + "\n";
                }

                return ret;
        }

}