Remove unused import. Fix malformed javadoc.
@@ -19,7 +19,6 @@ package org.apache.commons.math4.ml.clustering;
import java.util.ArrayList;
import java.util.Collection;
-import java.util.Collections;
import java.util.List;
import org.apache.commons.math4.exception.ConvergenceException;
@@ -197,7 +196,7 @@ public class KMeansPlusPlusClusterer<T extends Clusterable> extends Clusterer<T>
* @throws MathIllegalArgumentException if the data points are null or the number
* of clusters is larger than the number of data points
* @throws ConvergenceException if an empty cluster is encountered and the
- * {@link #emptyStrategy} is set to {@code ERROR}
+ * empty cluster strategy is set to {@link EmptyClusterStrategy#ERROR}
*/
@Override
public List<CentroidCluster<T>> cluster(final Collection<T> points) {
