WG1 Workshop in Paris

The workshop on semantics will take place on Wednesday 15th December 2010, from 14:30 to 16:30 in room Lavoisier A.

Agenda.

Antoine Zimmermann
Introduction, round table, summary of WG1 activities and recent STSMs. (slides)

Cassia Trohjan dos Santos
Title: Consistency-driven Argumentation for Alignment Agreement (slides)
Abstract:
Ontology alignment agreement aims at overcoming the problem that arises when different parties need to conciliate their conflicting views on ontology alignments. Argumentation has been applied as a way for supporting the creation and exchange of arguments, followed by the reasoning on their acceptability. Here we use arguments as positions that support or reject correspondences. Applying only argumentation to select correspondences may lead to alignments which relates ontologies in an inconsistent way. In order to address this problem, we define maximal consistent sub-consolidations which generate consistent and argumentation-grounded alignments. We propose a strategy for computing them involving both argumentation and logical inconsistency detection. It removes correspondences that introduce inconsistencies into the resulting alignment and allows for maintaining the consistency within an argumentation system. We present experiments comparing the different approaches.

George Vouros
Title: Reaching Semantic Agreements: Methods, Issues and Challenges (slides)
Abstract:
Reaching semantic agreements is necessary in Multi-Agent Systems where agents do not share common vocabularies and conceptualizations, in Peer Data Management Systems where peers are heterogeneous to the data schema they use, and also, for different ontology alignment and instance matching methods to synthesize their results. Over the years there are some models that have been produced towards semantic agreement: Negotiation, Argumentation, Constraint-Satisfaction and Probabilistic Models. This talk will present the state of the art for agreement technologies related to the alignment of ontologies and will discuss issues and challenges for future research.

Maria Ganzha, Marcin Paprzycki
Title: Ontology for contract negotiations in an agent-based Grid resource management system (slides)
Abstract:
In the proposed system, software agents are to become the intelligent middleware that is to facilitate high-level resource management in the Grid. Furthermore, it is assumed that all information in the system will be ontology-based and semantically processed. Most importantly, this information will be used in all forms of contract negotiations. To achieve this goal, an existing Grid ontology (CoreGRID) has been modified and extended. The aim of the presentation is to summarize the reasoning that led us to the development of our ontology, as well as to present and discuss its main features.

Open discussion
Towards a white paper on semantics for Agreement Technologies.
1) How semantics relates to the other WGs;
2) Use cases for semantics in agreement technologies.

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