Abstract
Allen‘s interval algebra has recently been under serious theoretical investigation for the purpose of identifying interesting sub-algebras within it. In this paper we have explored two mutually exclusive sub-algebras of Allen‘s interval algebra, which bear some physical significance. One of them is attached to the causal aspect of the temporal information, while the other one is related to simple containment of temporal relations. We are currently developing some algorithms for checking consistency by isolating these subsets from a given temporal constraint network. In this paper we have proposed such an algorithm and have discussed the significance of the availability of these two sub-algebras.
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