Merge branch 'single-complete-linkages' into 'master'

package cz.fidentis.analyst.engines.face.batch.clustering.impl;

import cz.fidentis.analyst.engines.face.batch.clustering.LinkageStrategy;

import cz.fidentis.analyst.engines.face.batch.clustering.dto.Distance;

import java.util.List;

/**

 * @author Patrik Tomov

 */

public class CompleteLinkageStrategy implements LinkageStrategy {

    @Override

    public Distance calculateDistance(List<Distance> distances) {

        double maxDistance = distances.stream()

                .mapToDouble(Distance::getDistance)

                .max()

                .orElse(0.0);

        return new Distance(maxDistance);

    }

}

package cz.fidentis.analyst.engines.face.batch.clustering.impl;

import cz.fidentis.analyst.engines.face.batch.clustering.LinkageStrategy;

import cz.fidentis.analyst.engines.face.batch.clustering.dto.Distance;

import java.util.List;

/**

 * @author Patrik Tomov

 */

public class SingleLinkageStrategy implements LinkageStrategy {

    @Override

    public Distance calculateDistance(List<Distance> distances) {

        double minDistance = distances.stream()

                .mapToDouble(Distance::getDistance)

                .min()

                .orElse(0.0);

        return new Distance(minDistance);

    }

}