Logical foundations of object-oriented and frame-based languages
Journal of the ACM (JACM)
Higher-Order Logic and Theorem Proving for Structured Specifications
WADT '99 Selected papers from the 14th International Workshop on Recent Trends in Algebraic Development Techniques
ε-connections of abstract description systems
Artificial Intelligence
Conservative extensions in expressive description logics
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
Deciding inseparability and conservative extensions in the description logic EL
Journal of Symbolic Computation
CICM'12 Proceedings of the 11th international conference on Intelligent Computer Mathematics
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The Distributed Ontology Language DOL, currently being standardized as ISO WD 17347 within the OntoIOp (Ontology Integration and Interoperability) activity of ISO/TC 37, provides a unified framework for (1) ontologies formalized in heterogeneous logics, (2) modular ontologies, (3) links between ontologies, and (4) ontology annotation. A DOL ontology consists of modules formalized in languages such as OWL or Common Logic, serialized in the existing syntaxes of these languages. On top, DOL's meta level allows for expressing heterogeneous ontologies and links between ontologies, including (heterogeneous) imports and alignments, conservative extensions, and theory interpretations. We present the abstract syntax of these meta-level constructs, with three alternative semantics: direct, translational, and collapsed semantics.