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TIME
2003
IEEE
14 years 3 months ago
A Novel Approach to Model NOW in Temporal Databases
In bitemporal databases, current facts and transaction states are modelled using a special value to represent the current time (such as a minimum or maximum timestamp or NULL). Pr...
Bela Stantic, John Thornton, Abdul Sattar
DEON
2010
Springer
14 years 3 months ago
Relevance, Derogation and Permission
Abstract. We show that a recently developed theory of positive permission based on the notion of derogation is hampered by a triviality result that indicates a problem with the und...
Audun Stolpe
ASP
2001
Springer
14 years 2 months ago
Computing stable models in parallel
Answer-set programming (ASP) solvers must handle difficult computational problems that are NP-hard. These solvers are in the worst case exponential and their scope of applicabilit...
Raphael A. Finkel, Victor W. Marek, Neil Moore, Mi...
CONTEXT
2001
Springer
14 years 2 months ago
On the Dimensions of Context Dependence: Partiality, Approximation, and Perspective
Abstract. In this paper we propose to re-read the past work on formalizing context as the search for a logic of the relationships between partial, approximate, and perspectival the...
Massimo Benerecetti, Paolo Bouquet, Chiara Ghidini
ICLP
2001
Springer
14 years 2 months ago
An Order-Sorted Resolution with Implicitly Negative Sorts
We usually use natural language vocabulary for sort names in order-sorted logics, and some sort names may contradict other sort names in the sort-hierarchy. These implicit negation...
Ken Kaneiwa, Satoshi Tojo