Spatial persistence

摘要

We examine the spatial version of the persistence problem. In temporal reasoning, this is the problem of determining whether or not the validity of a fact at some point in time persists until another point in time, given that certain events or processes may happen in between. We show that its analog does intuitively exist in spatial reasoning, and review under the aspect of transferability to space different approaches for achieving persistence in temporal reasoning. Finally, we present reasoning with generalized spatial Allen relations as an instance of reasoning under the assumption of spatial persistence.