Cluster
class Cluster(val id: Option[String], val name: Option[String], val size: Option[Int], val kohonenMap: Option[KohonenMap], val array: Option[Array[Double]], val partition: Option[Partition], val covariances: Option[Covariances]) extends PmmlElement
A cluster is defined by its center vector or by statistics. A center vector is implemented by a NUM-ARRAY. Each Partition corresponds to a cluster and holds field statistics to describe it. The definition of a cluster may contain a center vector as well as statistics. The attribute modelClass in the ClusteringModel defines which one is used to actually define the cluster.