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- From: "Bullard, Claude L (Len)" <firstname.lastname@example.org>
- To: xmldev <email@example.com>
- Date: Mon, 18 Dec 2000 10:37:11 -0600
It gets difficult to follow this discussion. Some
definitions are introduced for the term "ontology"
such that others not engaged on a daily basis might
follow. If these are not the local understanding
for ontology, please comment. I am interested in
how RDF and Topic Maps meet the requirements of
These are extracted from
where in an ontology,
"definitions associate the names of entities in the universe of discourse
(e.g., classes, relations, functions, or other objects) with
human-readable text describing what the names mean, and formal
axioms that constrain the interpretation and well-formed use of
"a common ontology defines the vocabulary with which queries
and assertions are exchanged among agents"
Note the notion of the "ontological commitment"
"Ontological commitments are agreements to use the shared
vocabulary in a coherent and consistent manner."
In the web services paradigm I would equate "agreement"
to the action of *signing* the contract for the semantic service and
therefore, to act in accordance with the definitions
in the ontology. A service is tested to ensure quality
and to validate the negotiated terms and conditions for use.
Note the principal of behavior, or observable actions as a means
to test commitment:
"an agent commits to an ontology if its observable actions are
consistent with the definitions in the ontology"
which makes the notion of testing, or contraints, important.
In previous mails, I have emphasized the strategy of "tit for tat"
in negotiation or remediation over more complex systems. For
coarse transactions that use semantic services, remediation
might use the semantic service as part of the explanation
for the necessity of remediation prior to enacting the
remediation. The authority of the definitions is attested
by the ontological commitment as governing the transaction.
Intergraph Public Safety
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Daamyata. Datta. Dayadhvam.h