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» A Causal Logic of Logic Programming
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AMW
2010
13 years 11 months ago
Query Rewriting under Non-Guarded Rules
We address the problem of answering conjunctive queries over knowledge bases, specified by sets of first-order sentences called tuple-generating dependencies (TGDs). This problem i...
Andrea Calì, Georg Gottlob, Andreas Pieris
FORTE
2007
13 years 11 months ago
Specifying and Composing Interaction Protocols for Service-Oriented System Modelling
Abstract. We present and discuss a formal, high-level approach to the specification and composition of interaction protocols for service-oriented systems. This work is being develo...
João Abreu, Laura Bocchi, José Luiz ...
CASCON
2004
108views Education» more  CASCON 2004»
13 years 11 months ago
Consistent query answering under inclusion dependencies
For several reasons a database may not satisfy certain integrity constraints (ICs), for example, when it is the result of integrating several independent data sources. However, mo...
Loreto Bravo, Leopoldo E. Bertossi
CLIMA
2004
13 years 11 months ago
A Computational Model for Conversation Policies for Agent Communication
In this paper we propose a formal specification of a persuasion protocol between autonomous agents using an approach based on social commitments and arguments. In order to be flexi...
Jamal Bentahar, Bernard Moulin, John-Jules Ch. Mey...
COMMA
2006
13 years 11 months ago
A dialectic procedure for sceptical, assumption-based argumentation
We present a procedure for computing the sceptical "ideal semantics" for argumentation in assumption-based frameworks. This semantics was first proposed for logic program...
Phan Minh Dung, Paolo Mancarella, Francesca Toni