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PADL
2010
Springer
14 years 4 months ago
Implementing Query Answering for Hybrid MKNF Knowledge Bases
Abstract. Ontologies and rules are usually loosely coupled in knowledge representation formalisms. In fact, ontologies use open-world reasoning while the leading semantics for rule...
Ana Sofia Gomes, José Júlio Alferes,...
CORR
2011
Springer
186views Education» more  CORR 2011»
13 years 2 months ago
A Goal-Directed Implementation of Query Answering for Hybrid MKNF Knowledge Bases
Ontologies and rules are usually loosely coupled in knowledge representation formalisms. In fact, ontologies use open-world reasoning while the leading semantics for rules use non...
Ana Sofia Gomes, José Júlio Alferes,...
KI
2009
Springer
14 years 1 months ago
On Defaults in Action Theories
Abstract. We study the integration of two prominent fields of logicbased AI: action formalisms and non-monotonic reasoning. The resulting framework allows an agent employing an ac...
Hannes Strass, Michael Thielscher
EMO
2003
Springer
81views Optimization» more  EMO 2003»
14 years 18 days ago
Solving Hierarchical Optimization Problems Using MOEAs
Abstract. In this paper, we propose an approach for solving hierarchical multi-objective optimization problems (MOPs). In realistic MOPs, two main challenges have to be considered:...
Christian Haubelt, Sanaz Mostaghim, Jürgen Te...
IJCAI
1989
13 years 8 months ago
On the Semantics of Counterfactuals
It is argued that Ginsberg's Possible Worlds Approach to counterfactual implication suffers from a number of defects which are the result of confusing proof theory and model ...
Peter Jackson