@conference {747,
	title = {A Method for Automatically Generating Schema Diagrams for OWL Ontologies},
	booktitle = {1st Iberoamerican Knowledge Graph and Semantic Web Conference (KGSWC)},
	year = {2019},
	month = {06/2019},
	publisher = {Springer},
	organization = {Springer},
	chapter = {149-161},
	address = {Villa Clara, Cuba},
	abstract = {<p>Interest in Semantic Web technologies, including knowledge graphs and ontologies, is increasing rapidly in industry and academics. In order to support ontology engineers and domain experts, it is necessary to provide them with robust tools that facilitate the ontology engineering process. Often, the schema diagram of an ontology is the most important tool for quickly conveying the overall purpose of an ontology. In this paper, we present a method for programmatically generating a schema diagram from an OWL file. We evaluate its ability to generate schema diagrams similar to manually drawn schema diagrams and show that it outperforms VOWL and OWLGrEd. In addition, we provide a prototype implementation of this tool.</p>
},
	keywords = {design patterns, evaluation, implementation, ontology, schema diagrams, visualization},
	author = {Cogan Shimizu and Aaron Eberhart and Nazifa Karima and Quinn Hirt and Adila Krisnadhi and Pascal Hitzler}
}
@conference {133,
	title = {All But Not Nothing: Left-Hand Side Universals for Tractable {OWL} Profiles},
	booktitle = {Proceedings of the 11th International Workshop on OWL: Experiences and Directions (OWLED 2014) co-located with 13th International Semantic Web Conference on (ISWC 2014), Riva del Garda, Italy, October 17-18, 2014.},
	volume = {1265},
	year = {2014},
	month = {10/2014},
	pages = {97-108},
	publisher = {CEUR-WS.org},
	organization = {CEUR-WS.org},
	abstract = {We show that occurrences of the universal quantifier in the left-hand side of general concept inclusions can be rewritten into EL++ axioms under certain circumstances. I.e., this intuitive modeling feature is available for OWL EL while retaining tractability. Furthermore, this rewriting makes it possible to reason over corresponding extensions of EL++ and Horn-SROIQ using standard reasoners.},
	keywords = {description logics, Horn Logics, OWL},
	url = {http://ceur-ws.org/Vol-1265/owled2014_submission_13.pdf},
	author = {David Carral and Adila Krisnadhi and Sebastian Rudolph and Pascal Hitzler},
	editor = {C. Maria Keet and Valentina A. M. Tamma}
}
@conference {124,
	title = {Recent Advances in Integrating {OWL} and Rules},
	booktitle = {Web Reasoning and Rule Systems - 6th International Conference, RR 2012, Vienna, Austria, September 10-12, 2012. Proceedings},
	volume = {7497},
	year = {2012},
	month = {09/2012},
	pages = {225-228},
	publisher = {Springer},
	organization = {Springer},
	address = {Austria, Vienna},
	abstract = {As part of the quest for a unifying logic for the Semantic Web Technology Stack, a central issue is finding suitable ways of integrating description logics based on the Web Ontology Language (OWL) with rule-based approaches based on logic programming. Such integration is difficult since naive approaches typically result in the violation of one or more desirable design principles. For example, while both OWL 2 DL and RIF Core (a dialect of the Rule Interchange Format RIF) are decidable, their naive union is not, unless carefully chosen syntactic restrictions are applied.

We report on recent advances and ongoing work by the authors in integrating OWL and rulesWe take an OWL-centric perspective, which means that we take OWL 2 DL as a starting point and pursue the question of how features of rulebased formalisms can be added without jeopardizing decidability. We also report on incorporating the closed world assumption and on reasoning algorithms. This paper essentially serves as an entry point to the original papers, to which we will refer throughout, where detailed expositions of the results can be found.},
	keywords = {description logics, OWL, Rules},
	doi = {10.1007/978-3-642-33203-6_20},
	url = {http://dx.doi.org/10.1007/978-3-642-33203-6_20},
	author = {Matthias Knorr and David Carral and Pascal Hitzler and Adila Krisnadhi and Frederick Maier and Cong Wang},
	editor = {Markus Kr{\"o}tzsch and Umberto Straccia}
}
@conference {139,
	title = {A Better Uncle for {OWL}: Nominal Schemas for Integrating Rules and Ontologies},
	booktitle = {Proceedings of the 20th International Conference on World Wide Web, WWW 2011, Hyderabad, India, March 28 - April 1, 2011},
	year = {2011},
	month = {03/2011},
	pages = {645-654},
	publisher = {ACM},
	organization = {ACM},
	abstract = {We propose a description-logic style extension of OWL 2 with nominal schemas which can be used like "variable nominal classes" within axioms. This feature allows ontology languages to express arbitrary DL-safe rules (as expressible in SWRL or RIF) in their native syntax. We show that adding nominal schemas to OWL 2 does not increase the worst-case reasoning complexity, and we identify a novel tractable language SROELV3(\cap, x) that is versatile enough to capture the lightweight languages OWL EL and OWL RL.},
	keywords = {datalog, Description Logic, Semantic Web Rule Language, SROIQ, tractability, Web Ontology Language},
	isbn = {978-1-4503-0632-4},
	doi = {10.1145/1963405.1963496},
	url = {http://doi.acm.org/10.1145/1963405.1963496},
	author = {Markus Kr{\"o}tzsch and Frederick Maier and Adila Krisnadhi and Pascal Hitzler},
	editor = {Sadagopan Srinivasan and Krithi Ramamritham and Arun Kumar and M. P. Ravindra and Elisa Bertino and Ravi Kumar}
}
@conference {143,
	title = {Local Closed World Semantics: Keep it simple, stupid!},
	booktitle = {Proceedings of the 24th International Workshop on Description Logics (DL 2011), Barcelona, Spain, July 13-16, 2011},
	volume = {745},
	year = {2011},
	month = {07/2011},
	publisher = {CEUR-WS.org},
	organization = {CEUR-WS.org},
	abstract = {A combination of open and closed-world reasoning (usually called local closed world reasoning) is a desirable capability of knowledge representation formalisms for Semantic Web applications. However, none of the proposals made to date for extending description logics with local closed world capabilities has had any significant impact on applications. We believe that one of the key reasons for this is that current proposals fail to provide approaches which are intuitively accessible for application developers and at the same time are applicable, as extensions, to expressive description logics such as SROIQ, which underlies the Web Ontology Language OWL. In this paper we propose a new approach which overcomes key limitations of other major proposals made to date. It is based on an adaptation of circumscriptive description logics which, in contrast to previously reported circumscription proposals, is applicable to SROIQ without rendering reasoning over the resulting language undecidable.},
	keywords = {circumscription, closed world, decidability, Description Logic},
	url = {http://ceur-ws.org/Vol-745/paper_12.pdf},
	author = {Adila Krisnadhi and Kunal Sengupta and Pascal Hitzler},
	editor = {Riccardo Rosati and Sebastian Rudolph and Michael Zakharyaschev}
}
