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» On the Complexity of Universal Programs
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RR
2010
Springer
15 years 5 months ago
Defeasibility in Answer Set Programs via Argumentation Theories
Defeasible reasoning has been studied extensively in the last two decades and many different and dissimilar approaches are currently on the table. This multitude of ideas has made...
Hui Wan, Michael Kifer, Benjamin N. Grosof
ICCS
2005
Springer
16 years 3 days ago
Evolutionary Discovery of Arbitrary Self-replicating Structures
In this paper we describe our recent use of genetic programming methods to automatically discover CA rule sets that produce self-replication of arbitrary given structures. Our init...
Zhijian Pan, James A. Reggia
LPNMR
1997
Springer
15 years 10 months ago
Improving the Alternating Fixpoint: The Transformation Approach
We present a bottom-up algorithm for the computation of the well-founded model of non-disjunctive logic programs which is based on the set of elementary program transformations stu...
Ulrich Zukowski, Burkhard Freitag, Stefan Brass
ICDE
2006
IEEE
189views Database» more  ICDE 2006»
16 years 8 months ago
Algebraic Optimization of Nested XPath Expressions
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...
Matthias Brantner, Carl-Christian Kanne, Guido Moe...
ECTEL
2007
Springer
16 years 23 days ago
Distilling Lessons from across Different Types of e-learning Interventions
Most Higher Education institutions are now embracing e-learning to some extent. Some have instigated institution-wide e-learning initiatives, whilst others are engaging in the use ...
Grainne Conole