Data models exist where relations are required to be specialized, and temporal specializations often constitute important semantics about temporal relations that may be utilized for, e.g., query optimization and processing purposes.
The chosen name is more widely used than the alternative name (+E3). The chosen name is new (+E5) and indicates that specialization is done with respect to the temporal aspects of facts (+E8). Temporal specialization seems to be open-ended (+E4). Thus, an opposite concept, temporal generalization, has been defined. ``Temporal restriction'' has no obvious opposite name (-E4).