Abstract
Spatio-temporal reasoning is a well recognized branch of artificial intelligence with an increasing significance in whole modern computer science. In this paper we compare the recently introduced XCDC formalism with other qualitative techniques: classic CDC, Allen's interval calculus, n-block algebra, topological models (RCC-5 and RCC-8), internal cardinal directions (ICD-5 and ICD-9) and the spatio-temporal patterns. We also introduce the methods of the conversion of the basic relations expressed in the previous models to the structures of the XCDC formalism.
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