Term rewriting and all that
Ordered chaining calculi for first-order theories of transitive relations
Journal of the ACM (JACM)
Introduction To Automata Theory, Languages, And Computation
Introduction To Automata Theory, Languages, And Computation
Practical experiments with regular approximation of context-free languages
Computational Linguistics - Special issue on finite-state methods in NLP
Self-embedded context-free grammars with regular counterparts
Acta Informatica
Deciding Regular Grammar Logics with Converse Through First-Order Logic
Journal of Logic, Language and Information
Replacing SEP-Triplets in SNOMED CT Using Tractable Description Logic Operators
AIME '07 Proceedings of the 11th conference on Artificial Intelligence in Medicine
IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
Decidability of SHIQ with complex role inclusion axioms
Artificial Intelligence
Short communication: Reasoning with part-part relations in a description logic
Knowledge-Based Systems
Contextualized knowledge repositories for the Semantic Web
Web Semantics: Science, Services and Agents on the World Wide Web
Flag & check: data access with monadically defined queries
Proceedings of the 32nd symposium on Principles of database systems
A decidable extension of SROIQ with complex role chains and unions
Journal of Artificial Intelligence Research
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We propose an extension of the syntactic restriction for complex role inclusion axioms in the description logic $\mathcal{SROIQ}$. Like the original restriction in $\mathcal{SROIQ}$, our restrictions can be checked in polynomial time and they guarantee regularity for the sets of role chains implying roles, and thereby decidability for the main reasoning problems. But unlike the original restrictions, our syntactic restrictions can represent any regular compositional properties on roles. In particular, many practically relevant complex role inclusion axioms, such as those describing various parthood relations, can be expressed in our extension, but could not be expressed in the original $\mathcal{SROIQ}$.