The Hierarchies of Multivalued Attribute Domains and Corresponding Applications in Data Mining

Table 2

Category	Sub-category	Age range
Youth	Puberty	18-28
	Mature period	29-40
Middle aged	Strong period	41-48
	Robust period	49-55
	Adjustment period	56-65
Old age	Initial old period	66-72
	Middle old period	73-84
	Old period	85