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» Evolving Logical Specification in Information Systems
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AMAI
2000
Springer
13 years 7 months ago
The logic of events
An event space is a set of instantaneous events that vary both in time and specificity. The concept of an event space provides a foundation for a logical--i.e., modular and open-a...
Glenn Shafer, Peter R. Gillett, Richard B. Scherl
JODL
2000
123views more  JODL 2000»
13 years 7 months ago
On Z39.50 wrapping and description logics
Z39.50 is a client/server protocol widely used in digital libraries and museums for searching and retrieving information spread over a number of heterogeneous sources. To overcome ...
Yannis Velegrakis, Vassilis Christophides, Panos C...
PODS
2000
ACM
102views Database» more  PODS 2000»
13 years 11 months ago
Linear Approximation of Planar Spatial Databases Using Transitive-Closure Logic
We consider spatial databases in the plane that can be defined by polynomial constraint formulas. Motivated by applications in geographic information systems, we investigate line...
Floris Geerts, Bart Kuijpers
AI
2000
Springer
13 years 7 months ago
Using temporal logics to express search control knowledge for planning
Over the years increasingly sophisticated planning algorithms have been developed. These have made for more efficient planners, but unfortunately these planners still suffer from ...
Fahiem Bacchus, Froduald Kabanza
LISP
2008
97views more  LISP 2008»
13 years 7 months ago
Efficient and flexible access control via Jones-optimal logic program specialisation
We describe the use of a flexible meta-interpreter for performing access control checks on deductive databases. The meta-program is implemented in Prolog and takes as input a datab...
Steve Barker, Michael Leuschel, Mauricio Varea