This concept is important for large sequences (in particular, for continuous scientific data) where data is collected only for a subset of the time points in the time sequence, or all time points contain data, but interpolation is used as a form of compression. The alternative name of temporal derivation will apply if the definition is extended to encompass cases where the derivation is not based on interpolation, but on other computations or rules.
The concept is specific to temporal databases (+R1) and its essence—interpolation—is well-defined and understood in the real world (+R2, +R3). The name is intuitive (+E8).