Modeling the evolution of objects in temporal information systems
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This paper presents a semantic foundation of temporal conceptual models used to design temporal information systems. We consider a modeling language able to express both timestamping and evolution constraints, We conduct a deeper investigation on evolution constraints, eventually devising a model-theoretic semantics for a full-fledged model with both timestamping and evolution constraints. The proposed formalization is meant both to clarify the meaning of the various temporal constructors appeared in the literature and to give a rigorous definition to notions like satisfiability, subsumption and logical implication. Furthermore, we also show how to express temporal constraints using a subset of first-order temporal logic, i.e., DLRus, the description logic DLR extended with the temporal operators Since and Until. We show how DLRus is able to capture the various modeling constraints in a succinct way and to perform automated reasoning on temporal conceptual models.