Context and Ontologies: Contextual Indexing of Ontological Expressions
July 2005
Leo Obrst, The MITRE Corporation
Deborah Nichols, The MITRE Corporation
ABSTRACT
This paper discusses aspects of context as applied to ontologies. In
particular, we note some formalizations of context that have been applied
to ontologies such as Menzel (1999) and Akman & Surov (1996, 1997),
that have largely been framed in terms of theories such as Situation
Theory (Barwise & Perry, 1983) which originated in natural language
semantics. We also mention the notion of labeled deduction (Gabbay,
1996) and speculate on its prospective use in the contextualizing of
ontologies. The latter can be viewed as a mechanism for annotating ontological
assertions and proofs with contextual information about provenance,
security, strength/confidence of assertion, and aspects of policy. Labeled
deduction correlates one or more logics, with one logic addressing the
primary assertion or inference step and another logic addressing the
label or annotation of that assertion or inference step.
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