Temporal Generalization with Domain Generalization Graphs

This paper addresses the problem of using domain generalization graphs to generalize temporal data extracted from relational databases. A domain generalization graph associated with an attribute deenes a partial order which represents a set of generalization relations for the attribute. We propose formal speciications for domain generalization graphs associated with calendar (date and time) attributes. These graphs are reusable (i.e., can be used to generalize any calendar attributes), adaptable (i.e., can be extended or restricted as appropriate for particular applications), and transportable (i.e., can be used with any database containing a calendar attribute).