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Travel Agent Game in Agentcities (TAGA) is the framework that extends and enhances the Trading Agent Competition (TAC) scenario to work in Agentcities, an open multi agent environment based on FIPA compliant pla tforms. TAGA uses the semantic web languages and tools (RDF and OWL) to specify and publish the underlying common ontologies; as a content language(More)
and application service frameworks). We believe that the Semantic Web markup language DAML+OIL (DARPA Agent Markup Language plus Ontology Inference Layer) will be central to this goal’s realization. The DAML Program aims to develop a Semantic Web markup language that provides sufficient rules for ontology development and that supports intelligent agents and(More)
We describe a research project on resolving semantic differences for multi-agent systems (MAS) in electronic commerce. The approach can be characterized as follows: (1) agents in a MAS may have their own specific ontologies defined on top of a shared base ontology; (2) concepts in these ontologies are represented as frame-like structures based on DAML+OIL(More)
Effective use of the vast quantity of information now available on the web will require the use of “Semantic Web” markup languages such as the DARPA Agent Markup Language (DAML). Such languages will enable the automated gathering and processing of much information that is currently available but insufficiently utilized. Effectively, such languages will(More)
The UMBCTAC agent was one of the top ranked agents in the third international Trading Agent Competition (TAC’02). This paper describes and evaluates the key heuristics used by UMBCTAC, including the early bird heuristic, the balance heuristic, and the separation heuristic. We developed a simple gainrisk model to search safe and profitable allocations for(More)
Effective use of the vast quantity of information now available on the web will require the use of “Semantic Web” markup languages such as the DARPA Agent Markup Language (DAML). Such languages will enable the automated gathering and processing of much information that is currently available but insufficiently utilized. Effectively, such languages will(More)