Data mining — Category maps

In Intelligent Miner®, you must define a taxonomy by one or more category maps. A category map is a table that consists of a child column and a parent column.

Each record of the table describes a relation between an item and a category, or between a category and another category. The member of a category is stored in the child column, and the category is stored in the parent column.

There are the following types of category maps:

A non-recursive category map can hold relations between two consecutive levels of a hierarchy only.
A recursive category map can hold relations between more than two consecutive levels.

For example, the hierarchy that is shown in Figure 1 can be represented by the following two non-recursive category maps:

Table 1. Category map 1: Non-recursive
Child	Parent
Orange Juice	Beverages
Beer	Beverages
Tomato	Vegetables
Cabbage	Vegetables
Carrot	Vegetables

Table 2. Category map 2: Non-recursive
Child	Parent
Beverages	Food
Vegetables	Food

The same hierarchy can also be represented by the following recursive category map:

Table 3. Category map: Recursive
Child	Parent
Orange Juice	Beverages
Beer	Beverages
Tomato	Vegetables
Cabbage	Vegetables
Carrot	Vegetables
Beverages	Food
Vegetables	Food