Table 1. Examples of ontology rules
Rules Entities Relationship Element Entities/Attributes
1 Convertible is a type of car
2 Car has attributes of engine, color
3 Color has types of red, white, black, blue
Ontology Exchange and Integrat on v a Product-Broker ng Agents
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Ontology.Exchange.Model. .
and. Formalities
We assume that agents are egoistic, but they are willing to collaborate with each
other to achieve their objectives. Ontology exchange is a practical way for agents
to enhance their ontologies.
There are three basic ontology exchange models, namely, unilateral, bilateral, and
multilateral, in terms of the number of agents involved. Here, a model of ontology
exchange between an agent and several agents is shown in Figure 3. Agent S contacts
agents A1 to An for certain ontology definitions. First, agent S sends a request to
the other agents, encapsulating some existing ontology terms/rules in the request.
Then, each corresponding agent may respond with some ontology definitions.
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