oracle.dmt.odm.transformation
Class CategoryGroup

java.lang.Object
  |
  +--oracle.dmt.odm.transformation.CategoryGroup

public class CategoryGroup

extends java.lang.Object

An instance of class CategoryGroup allows grouping of similar categories. A valid category group must have at least one category in it. The group identifier ( bin number) must be > 0. CategoryGroup is used to specify the categorical discretization of a categorical mining attribute to build a mining model.

Constructor Summary

CategoryGroup(int id, java.lang.String displayName, Category[] categories)
Creates a category group with the specified group ID and list of categories.

Method Summary

void	addCategory(Category cat) Adds a category to this group.
Category[]	getCategories() Returns the list (array) of categories belonging to this group.
java.lang.String	getDisplayName() Returns the group display name.
int	getGroupID() Returns the group identifier.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CategoryGroup

public CategoryGroup(int id,
                     java.lang.String displayName,
Category[] categories)
              throws InvalidArgumentException

Creates a category group with the specified group ID and list of categories. A valid category group must have at least one category in it.

Parameters:

id - Category group ID

displayName - Category group (display) name

categories - array of categories in the group

Throws:

InvalidArgumentException -

• if id is negative, or
• if the categories array is either null or empty.

Method Detail

addCategory

public void addCategory(Category cat)
                 throws InvalidArgumentException

Adds a category to this group.

Parameters:

cat - Category object, cannot be null.

Throws:

InvalidArgumentException - when the category is null

getGroupID

public int getGroupID()

Returns the group identifier.

Returns:

group ID

getDisplayName

public java.lang.String getDisplayName()

Returns the group display name.

Returns:

Display name.

getCategories

public Category[] getCategories()

Returns the list (array) of categories belonging to this group.

Returns:

Array of categories.