Version models for software configuration management
ACM Computing Surveys (CSUR)
Ontology Versioning and Change Detection on the Web
EKAW '02 Proceedings of the 13th International Conference on Knowledge Engineering and Knowledge Management. Ontologies and the Semantic Web
Promptdiff: a fixed-point algorithm for comparing ontology versions
Eighteenth national conference on Artificial intelligence
Handbook of automated reasoning
Optimal implementation of conjunctive queries in relational data bases
STOC '77 Proceedings of the ninth annual ACM symposium on Theory of computing
Differences between versions of UML diagrams
Proceedings of the 9th European software engineering conference held jointly with 11th ACM SIGSOFT international symposium on Foundations of software engineering
Proof-Theoretic Approach to Description-Logic
LICS '05 Proceedings of the 20th Annual IEEE Symposium on Logic in Computer Science
Semantical characterizations and complexity of equivalences in answer set programming
ACM Transactions on Computational Logic (TOCL)
Pinpointing in the Description Logic $\mathcal {EL}^+$
KI '07 Proceedings of the 30th annual German conference on Advances in Artificial Intelligence
Correcting a Space-Efficient Simulation Algorithm
CAV '08 Proceedings of the 20th international conference on Computer Aided Verification
The Logical Difference Problem for Description Logic Terminologies
IJCAR '08 Proceedings of the 4th international joint conference on Automated Reasoning
Formal Properties of Modularisation
Modular Ontologies
Semantic Modularity and Module Extraction in Description Logics
Proceedings of the 2008 conference on ECAI 2008: 18th European Conference on Artificial Intelligence
Conservativity in Structured Ontologies
Proceedings of the 2008 conference on ECAI 2008: 18th European Conference on Artificial Intelligence
Modular reuse of ontologies: theory and practice
Journal of Artificial Intelligence Research
Conservative extensions in expressive description logics
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
Terminological cycles in a description logic with existential restrictions
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Non-standard reasoning services for the debugging of description logic terminologies
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Deciding inseparability and conservative extensions in the description logic EL
Journal of Symbolic Computation
Minimal module extraction from DL-lite ontologies using QBF solvers
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
Consequence-driven reasoning for horn SHIQ ontologies
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
Conjunctive query answering in the description logic EL using a relational database system
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
Finding all justifications of OWL DL entailments
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
Journal on data semantics X
Logic-based ontology comparison and module extraction, with an application to DL-Lite
Artificial Intelligence
Supporting concurrent ontology development: Framework, algorithms and tool
Data & Knowledge Engineering
Justification oriented proofs in OWL
ISWC'10 Proceedings of the 9th international semantic web conference on The semantic web - Volume Part I
OWLDiff: A Practical Tool for Comparison and Merge of OWL Ontologies
DEXA '11 Proceedings of the 2011 22nd International Workshop on Database and Expert Systems Applications
Synonymous theories and knowledge representations in answer set programming
Journal of Computer and System Sciences
Foundations for uniform interpolation and forgetting in expressive description logics
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume Two
The modular structure of an ontology: atomic decomposition
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume Three
Logical difference computation with CEX2.5
IJCAR'12 Proceedings of the 6th international joint conference on Automated Reasoning
Saving Space in a Time Efficient Simulation Algorithm
Fundamenta Informaticae - Application of Concurrency to System Design, the Eighth Special Issue
Concept adjustment for description logics
Proceedings of the seventh international conference on Knowledge capture
Introductions to description logics: a guided tour
RW'13 Proceedings of the 9th international conference on Reasoning Web: semantic technologies for intelligent data access
Forgetting for answer set programs revisited
IJCAI'13 Proceedings of the Twenty-Third international joint conference on Artificial Intelligence
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We study a logic-based approach to versioning of ontologies. Under this view, ontologies provide answers to queries about some vocabulary of interest. The difference between two versions of an ontology is given by the set of queries that receive difierent answers. We investigate this approach for terminologies given in the description logic EL extended with role inclusions and domain and range restrictions for three distinct types of queries: subsumption, instance, and conjunctive queries. In all three cases, we present polynomialtime algorithms that decide whether two terminologies give the same answers to queries over a given vocabulary and compute a succinct representation of the difference if it is nonempty. We present an implementation, CEX2, of the developed algorithms for subsumption and instance queries and apply it to distinct versions of Snomed CT and the NCI ontology.