12.3.19 CatagoricalAttributeProperties

   A CategoricalAttributeProperties object is used to describe properties of a categorical attribute. It lists the specific categories that are recognized in the attribute, as well as a taxonomy, or CategorizationGraph, that organizes the categories into a hierarchy.

   This metadata may or may not be used by the underlying algorithm. It may be leveraged to determine if data being supplied as input to a mining operation is sufficiently similar to the data used to build the model.

   Superclasses

   ModelElement

   Contained Elements

   Category

   References

   category

   The set of categories listed for the attribute. If only the ’missing’ categories are listed, all other categories are considered ’valid.’ If ’valid’ categories are listed, all other non-missing categories are considered ’invalid.’ If only ’invalid’ categories are listed, all other non-missing categories are considered ’valid.’ If both ’valid’ and ’invalid’ categories are listed, all other non-missing categories encountered result in an exception.

   class: Category

   defined by: CategoricalPropertiesHasCategories

   multiplicity: zero or more

   inverse: Category::categoricalProperties

   taxonomy

   The taxonomy describes a hierarchical organization of the valid categories among the attribute data. There may be zero or more specified for a given attribute. If more than one are specified, the Data Mining System is supposed to produce one model per taxonomy as a single model result.

   class: CategoryTaxonomy