Partition
class Partition(val name: String, val partitionFieldStats: Array[PartitionFieldStats], val size: Option[Double]) extends PmmlElement
A Partition contains statistics for a subset of records, for example it can describe the population in a cluster. The content of a Partition mirrors the definition of the general univariate statistics. That is, each Partition describes the distribution per field. For each field there can be information about frequencies, numeric moments, etc.
The attribute name identifies the Partition. The attribute size is the number of records. All aggregates in PartitionFieldStats must have size = totalFrequency in Counts if specified.