Ontologies for Agents: Theory and Experiences

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Valentina Tamma
Springer Science & Business Media, May 19, 2005 - Computers - 345 pages
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There is a growing interest in the use of ontologies for multi-agent system app- cations. On the one hand, the agent paradigm is successfully employed in those applications where autonomous, loosely-coupled, heterogeneous, and distributed systems need to interoperate in order to achieve a common goal. On the other hand, ontologies have established themselves as a powerful tool to enable kno- edge sharing, and a growing number of applications have bene?ted from the use of ontologies as a means to achieve semantic interoperability among heterogeneous, distributed systems. In principle ontologies and agents are a match made in heaven, that has failed to happen. What makes a simple piece of software an agent is its ability to communicate in a ”social” environment, to make autonomous decisions, and to be proactive on behalf of its user. Communication ultimately depends on und- standing the goals, preferences, and constraints posed by the user. Autonomy is theabilitytoperformataskwithlittleornouserintervention,whileproactiveness involves acting autonomously with no need for user prompting. Communication, but also autonomy and proactiveness, depend on knowledge. The ability to c- municate depends on understanding the syntax (terms and structure) and the semantics of a language. Ontologies provide the terms used to describe a domain and the semantics associated with them. In addition, ontologies are often comp- mented by some logical rules that constrain the meaning assigned to the terms. These constraints are represented by inference rules that can be used by agents to perform the reasoning on which autonomy and proactiveness are based.
 

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Contents

Ontologies for Interaction Protocols
1
On the Impact of Ontological Commitment
19
Nobody There? Supporting Agents Linguistic Communication
43
Ontology Translation by Ontology Merging and Automated Reasoning
73
Experiments on Operational Issues
95
Reconciling Implicit and Evolving Ontologies for Semantic Interoperability
121
Query Processing in OntologyBased PeertoPeer Systems
145
Message Content Ontologies
169
Incorporating Complex Mathematical Relations in WebPortable Domain Ontologies
201
The SOUPA Ontology for Pervasive Computing
233
A UML Ontology and Derived Content Language for a Travel Booking Scenario
259
Some Experiences with the Use of Ontologies in Deliberative Agents
277
LocationMediated Agent Coordination in Ubiquitous Computing
299
An Ontology for AgentBased Monitoring of Fulfillment Processes
323
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