Artificial Intelligence
Reasoning about change: time and causation from the standpoint of artificial intelligence
Reasoning about change: time and causation from the standpoint of artificial intelligence
Constraint satisfaction in logic programming
Constraint satisfaction in logic programming
Artificial Intelligence - Special issue on knowledge representation
Finite representation of infinite query answers
ACM Transactions on Database Systems (TODS)
The token reification approach to temporal reasoning
Artificial Intelligence
Combining qualitative and quantitative constraints in temporal reasoning
Artificial Intelligence
Processing disjunctions in temporal constraint networks
Artificial Intelligence
Maintaining knowledge about temporal intervals
Communications of the ACM
Reified temporal theories and how to unreify them
IJCAI'91 Proceedings of the 12th international joint conference on Artificial intelligence - Volume 2
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In this work we consider using logic programs to perform temporal reasoning. We identify some difficulties of combining constraint propagation and generalized resolution when temporal information is represented using tokens. We show that standard top-down evaluation (i.e. resolution) is incomplete due to the inability to unify constraints and ground terms. We present some syntactic restrictions that enable temporal resolution. Under these restrictions, we propose a new unification method composed of constraint unification and token fusion algorithms. Incorporating them within a generalized resolution scheme render it complete.