Abstract
In this paper, we explore the links between two well-known models in spatial and temporal reasoning - Allen's interval algebra in temporal reasoning and the RCC model in spatial reasoning. We show that the temporal relations identified by interval algebra are actually a combination of RCC-8 relations with directional relations. The work divides RCC-8 relations into two distinct sets with respect to directional factors. This result can be utilized to combine topology and directional relations in particular applications.
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