Abstract. A formal and effective approach to the extension of the computational behaviour of logic programs is presented. The approach builds upon the following concepts. The exte...
: Salmetintroduced a notion of hypothetical knowledge and showed how it could be used to capture the type of counterfactual reasoning necessary to force the backwards induction sol...
The frame problem was originally de ned in the context of the situation calculus. The problem also manifests itself in more sophisticated temporal logics that can represent interv...
A refutation mechanism is introduced into logic programming, dual to the usual proof mechanism; then negation is treated via refutation. A four-valued logic is appropriate for the...
This paper discusses the relevance of a form of cut elimination theorem for linear logic tensor theories to the concept of a process on a Petri net. We base our discussion on two ...