D-Net

package eu.dnetlib.pace.distance.eval;

import java.util.HashMap;

/**

 * Created by claudio on 10/03/16.

 */

public class DistanceEvalMap extends HashMap<String, DistanceEval> {

	private double sumWeights;

	private double sumDistances = 0.0;

	public DistanceEvalMap(final double sumWeights) {

		this.sumWeights = sumWeights;

	}

	public void updateDistance(final DistanceEval d) {

		put(d.getFieldDef().getName(), d);

		if (d.getDistance() >= 0) {

			sumDistances += d.getDistance();

		} else {

			sumWeights -= d.getFieldDef().getWeight();

		}

	}

	public double distance() {

		return sumWeights == 0 ? 0 : sumDistances / sumWeights;

	}

}