Logical aspects of learning concepts
International Journal of Approximate Reasoning
Theoretical Computer Science
IJCAR '01 Proceedings of the First International Joint Conference on Automated Reasoning
Towards a framework for approximate ontologies
Fundamenta Informaticae
Reasoning within fuzzy description logics
Journal of Artificial Intelligence Research
Fusions of description logics and abstract description systems
Journal of Artificial Intelligence Research
Terminological logics with modal operators
IJCAI'95 Proceedings of the 14th international joint conference on Artificial intelligence - Volume 1
Using Google distance to weight approximate ontology matches
Proceedings of the 16th international conference on World Wide Web
Reasoning with rough description logics: An approximate concepts approach
Information Sciences: an International Journal
Reasoning within intuitionistic fuzzy rough description logics
Information Sciences: an International Journal
Supporting Fuzzy Rough Sets in Fuzzy Description Logics
ECSQARU '09 Proceedings of the 10th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty
Reasoning within expressive fuzzy rough description logics
Fuzzy Sets and Systems
Expressive fuzzy description logics over lattices
Knowledge-Based Systems
Extending soft sets with description logics
Computers & Mathematics with Applications
Paraconsistent and approximate semantics for the OWL 2 web ontology language
RSCTC'10 Proceedings of the 7th international conference on Rough sets and current trends in computing
Reasoning with the finitely many-valued Łukasiewicz fuzzy Description Logic SROIQ
Information Sciences: an International Journal
Ontology engineering with rough concepts and instances
EKAW'10 Proceedings of the 17th international conference on Knowledge engineering and management by the masses
Rough subsumption reasoning with rOWL
Proceedings of the South African Institute of Computer Scientists and Information Technologists Conference on Knowledge, Innovation and Leadership in a Diverse, Multidisciplinary Environment
Generalized fuzzy rough description logics
Information Sciences: an International Journal
Description logics over lattices with multi-valued ontologies
IJCAI'11 Proceedings of the Twenty-Second international joint conference on Artificial Intelligence - Volume Volume Two
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We extend traditional Description Logics (DL) with a simple mechanism to handle approximate concept definitions in a qualitative way. Often, for example in medical applications, concepts are not definable in a crisp way but can fairly exhaustively be constrained through a particular sub- and a particular super-concept. We introduce such lower and upper approximations based on rough-set semantics, and show that reasoning in these languages can be reduced to standard DL satisfiability. This allows us to apply Rough Description Logics in a study of medical trials about sepsis patients, which is a typical application for precise modeling of vague knowledge. The study shows that Rough DL-based reasoning can be done in a realistic use case and that modeling vague knowledge helps to answer important questions in the design of clinical trials.