Abstract:

Non-convex intervals allow identifying periodic intervals with gaps between them (e.g., “every Wednesday”), while convex intervals are those that are not composed of “separate pieces” (e.g., “from 1st April 2014 to 30th April 2014”). Non-convex intervals consist intuitively of some convex subintervals with convex gaps in between. In this paper, we describe an ontology design pattern to represent periodic intervals, a specific case of non-convex intervals in which the period between subintervals and the duration of such subintervals are constant.