Upon
receiving responses, agent S will determine whether and how they are related with
the existing ontology and which ontology pieces will be integrated at last.
Here, we only consider the terms in the ontology, as we deem that the ontologies
acquired from the respondents are trustworthy. Assuming that:
Os denotes the ontology of agent S;
Oi denotes the ontology response from agent Ai;
Tr denotes the set of terms included in the request;
Ts denotes the set of terms which are currently in Os;
Ti denotes the set of terms included in Oi
Define [ ] [ ] s e i s i s N N T T Sim O O Sim / , , = = to be the similarity between two ontologies Os
and Oi, which means that the similarity of ontology is measured by the term set in
Figure 3. An agent contacting other agents for ontology definitions
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Request
Response
Agent S
Agent A1
Agent An
Agent Ai
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Guan and Zhu
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the corresponding ontologies. In this formula, Ne represents the number of terms
which are the same or synonymous in both ontologies Os and Oi, and Ns represents
the total number of terms in Os.
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