About temporal uncertainty

A fuzzy-logic-based approach dealing with temporal uncertainty is presented. Both imprecision of temporal measurements and uncertain temporal knowledge are taken into consideration. Various causes of temporal uncertainty or fuzziness are discussed. On the basis of fuzzy set and possibility theory, each temporal uncertainty is represented in terms of possibility distributions. Definitions of temporal relations between two fuzzy temporal elements are proposed, and a computational model for combining different uncertainty bodies is described in order to compute the fulfilment degree of a generalized propositional statement under uncertainty. Fuzzy temporal constraint propagation is discussed.