Type

RP

SP

Information

The results of actual behavior and choices

The same as actual behavior

Data that only have the results of actual choices

Expression of intentions in virtual scenarios

Possibly will not match selection behavior

Selection/Ranking/Grading data

Alternatives

Alternatives that actually exist

Includes alternatives that do not exist

Properties

Limited range of property values

Correlation between properties exists

Expandable range of property values

Controllable correlation between properties