SAP ABAP Data Element RSDMEA_LIFT (Lift of the association rule)

Hierarchy

☛ SAP_BW (Software Component) SAP Business Warehouse
   ⤷ BW-EI-DM (Application Component) Data Mining
     ⤷ RS_DME_AA (Package) Data mining engines: Association analysis

Basic Data

Data Element	RSDMEA_LIFT
Short Description	Lift of the association rule

Data Type

Category of Dictionary Type	D	Domain
Type of Object Referenced		No Information
Domain / Name of Reference Type	RSDMDM_DEC152
Data Type	DEC	Counter or amount field with comma and sign
Length	15
Decimal Places	2
Output Length	21
Value Table

Further Characteristics

Search Help: Name
Search Help: Parameters
Parameter ID
Default Component name
Change document	☐
No Input History	☐
Basic direction is set to LTR	☐
No BIDI Filtering	☐

Field Label

	Length	Field Label
Short	10	Lift
Medium	20	Lift of the rule
Long	28	Lift of the association rule
Heading	0

Documentation

Definition

Confidence divided by support of the depending product.

Use

Lift helps to identify and eliminate rules that are only generated because some of the items naturally occur very frequently, although there is no actual association between the set of leading and depending items.

Example

Mathematically, for a rule X => Y,

lift = actual support (X,Y) / {Actual Support (X) * Actual Support (Y)},

where X and Y are the set of leading and depending items respectively, and actual support of an item set is the fraction (not in percentage) of all the transactions containing that item set.

History

Last changed by/on	SAP	20110908
SAP Release Created in	21C