Temporal reasoning based on semi-intervals
Artificial Intelligence
Maintaining knowledge about temporal intervals
Communications of the ACM
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In this paper, a two-dimensional, diagrammatic representation of the space of intervals, called an MR-diagram, is presented, together with another diagrammatic notations based on it, like the so-called W-diagram and some other auxiliary notations. Examples of the use of the notation in the algebra of interval relations, in interval arithmetic, and for solving a simple common-sense problem involving time intervals, are given.