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Towards Scalable and Complete Query Explanation with OWL 2 EL Ontologies
2015
Proceedings of the 24th ACM International on Conference on Information and Knowledge Management - CIKM '15
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To the best of our knowledge, no existing algorithm can efficiently and completely explain conjunctive queries (CQs) w.r.t. ELH ⊥ ontologies. ...
Besides standard query answering, there is also a need for such systems to be coupled with explanation facilities, in particular to explain missing query answers (i.e. desired answers of a query which ...
Jianfeng Du is partially supported by NSFC (61375056) and Guangdong Natural Science Foundation (S2013010012928). ...
doi:10.1145/2806416.2806547
dblp:conf/cikm/WangCWD15
fatcat:klcjrmqe5ndltgrdo32je7stea
Semantic Web Tools and Techniques for Knowledge Organization: An Overview
2017
Knowledge organization
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) and library automation. ...
and a doctoral degree from Bharathiar University. ...
Recently, the DL EL++ has been adopted as the logical underpinning of the OWL 2 EL profile of the new Web Ontology Language. ...
doi:10.5771/0943-7444-2017-4-273
fatcat:e6lv2dhwdfaypmqcbjcrnrufwe
Ontologies and Data Management: A Brief Survey
2020
Künstliche Intelligenz
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In order to align and complete data, systems may rely on taxonomies and background knowledge that are provided in the form of an ontology. ...
This survey gives an overview of research work on the use of ontologies for accessing incomplete and/or heterogeneous data. ...
Šimkus was supported by the Vienna Business Agency, and the Austrian Science Fund (FWF) projects P30360 and P30873. ...
doi:10.1007/s13218-020-00686-3
pmid:32999532
pmcid:PMC7497697
fatcat:zeskjfjrpvcojjh6q3yjzhlyci
Heuristic Ranking in Tightly Coupled Probabilistic Description Logics
[article]
2012
arXiv
pre-print
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We present an anytime algorithm to answer ranking queries, and provide an upper bound on the error that it incurs, as well as a criterion to decide when results are guaranteed to be correct. ...
In this paper, we present a probabilistic extension of the DL EL++ (which underlies the OWL2 EL profile) using Markov logic networks (MLNs) as probabilistic semantics. ...
Section 2 describes the preliminaries on the DL EL ++ and MLNs. ...
arXiv:1210.4894v1
fatcat:jq2itwcfmvcnrizskdvgf5cvmm
Semantic web technologies in pervasive computing: A survey and research roadmap
2015
Pervasive and Mobile Computing
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OWL and OWL 2 OWL's design is strongly influenced by Description Logics (DL) [6] . ...
systems can be deployed. 1 http://www.w3.org/TR/owl-features/ 2 in OWL one can e↵ectively model and reason over taxonomic knowledge. ...
Three profiles, namely OWL 2 EL, OWL 2 QL and OWL 2 RL, trade portions of expressive power for reasoning e ciency, targeting di↵erent application scenarios. ...
doi:10.1016/j.pmcj.2014.12.009
fatcat:dehfs5inkbexpagk265co5tvxi
Ontologies and the Semantic Web
[chapter]
2006
The Semantic Web
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To facilitate this process, RDF and OWL have been developed as standard formats for the sharing and integration of data and knowledge-the latter in the form of rich conceptual schemas called ontologies ...
These languages, and the tools developed to support them, have rapidly become de facto standards for ontology development and deployment; they are increasingly used, not only in research labs, but in large ...
Major research efforts have also been directed towards tackling some of the barriers to realising the semantic web mentioned in Section 1, and considerable progress has been made in areas such as ontology ...
doi:10.1002/0470028173.ch6
fatcat:pacolmphgvcxlh7g7nedbuz4zi
The Drosophila phenotype ontology
2013
Journal of Biomedical Semantics
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The DPO is openly available under an open source license in both OBO and OWL formats. ...
This work has significantly improved the accuracy and completeness of classification and made further development of the DPO more sustainable. ...
Ontology and the Gene Ontology.) ...
doi:10.1186/2041-1480-4-30
pmid:24138933
pmcid:PMC3816596
fatcat:tu5xlh2svfh7voqrmxuk7cs3km
Inline Evaluation of Hybrid Knowledge Bases
[chapter]
2011
Lecture Notes in Computer Science
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2 EL (Section 5.1) and conjunctive queries under DL-safeness condition over OWL 2 RL and OWL 2 EL (Section 5.2). ...
EL family and OWL 2 EL According to W3C OWL 2 Profiles [Mot+08] , the OWL 2 EL profile is designed as a subset of OWL 2 that is particularly suitable for applications employing ontologies that define ...
1
Meta-BI Ontology ...
doi:10.1007/978-3-642-23580-1_28
fatcat:xnzzbf2imngshokm36ni5vuzni
Applying Semantic Web Technologies for Diagnosing Road Traffic Congestions
[chapter]
2012
Lecture Notes in Computer Science
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Our prototype of semantic-aware diagnosis of road traffic congestions, experimented in Dublin Ireland, works efficiently with large, heterogeneous information sources and delivers value-added services ...
to citizens and city managers in quasi real-time. ...
This section 2 reviews (i) OWL 2 EL and its DL EL ++ as a formal knowledge representation language to define (ii) ontology stream and infer (iii) road congestions. ...
doi:10.1007/978-3-642-35173-0_8
fatcat:w7a4sogwh5gvflw4l4zpmwetve
Towards Unveiling the Ontology Key Features Altering Reasoner Performances
[article]
2015
arXiv
pre-print
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A variety of efficient reasoner with highly optimized algorithms have been developed to allow inference tasks on expressive ontology languages such as OWL(DL). ...
Reasoning with ontologies is one of the core fields of research in Description Logics. ...
However, this complexity could be tractable with less expressive fragments of OWL 2, mostly known as OWL profiles like OWL EL, OWL RL and OWL QL 2 . ...
arXiv:1509.08717v1
fatcat:2blv2wcflbetzop7vnurd7ijuy
Using provenance to debug changing ontologies
2011
Journal of Web Semantics
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Providing and reasoning with rich provenance data for expressive ontology languages, however, is a non-trivial task. ...
large and expressive ontologies, such as used in biomedical portals. ...
[22] extends the approach towards explanations and debugging of access rights. ...
doi:10.1016/j.websem.2011.06.009
fatcat:5dkguhyaevgaflzysufih2vyju
Uncertainty modeling process for semantic technology
2016
PeerJ Computer Science
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uncertainty with domain semantics. ...
While the case study illustrates the development of a probabilistic ontology in the PR-OWL probabilistic ontology language, the methodology is applicable to any ontology formalism that properly integrates ...
and validating the use case described. ...
doi:10.7717/peerj-cs.77
fatcat:nbpfounvwbgbjj4q2wqvkwgjji
Using SPARQL with RDFS and OWL Entailment
[chapter]
2011
Lecture Notes in Computer Science
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SPARQL is a query language and protocol for data specified in the Resource Description Format (RDF). The basic evaluation mechanism for SPARQL queries is based on subgraph matching. ...
The query criteria are given in the form of RDF triples possibly with variables in place of the subject, object, or predicate of a triple, called basic graph patterns. ...
We generally abbreviate IRIs using prefixes rdf, rdfs, owl, xsd, and foaf to refer to the RDF, RDFS, OWL, XML Schema Datatypes, and FOAF namespaces, respectively. ...
doi:10.1007/978-3-642-23032-5_3
fatcat:hntq6ag5ijeafgquqkwhwncmsy
Ontology Based Data Access in Statoil
2017
Social Science Research Network
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of translating ontological queries into data queries and their execution over either a single DB of federated DBs; and a query formulation module to support query construction for engineers with a limited ...
Our modules have been integrated in one OBDA system, deployed at Statoil, integrated with Statoil's infrastructure, and evaluated with Statoil's engineers and data. ...
This work was partially funded by the EU project Optique (FP7-ICT-318338), the EPSRC projects MaSI 3 , DBOnto, ED 3 , the BIGMED project (IKT 259055), and the SIRIUS Centre for Scalable Data Access (Research ...
doi:10.2139/ssrn.3199136
fatcat:l23bxm5dgrcolfr4p43cs6efre
Ontology Based Data Access in Statoil
2017
Journal of Web Semantics
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of translating ontological queries into data queries and their execution over either a single DB of federated DBs; and a query formulation module to support query construction for engineers with a limited ...
Our modules have been integrated in one OBDA system, deployed at Statoil, integrated with Statoil's infrastructure, and evaluated with Statoil's engineers and data. ...
This work was partially funded by the EU project Optique (FP7-ICT-318338), the EPSRC projects MaSI 3 , DBOnto, ED 3 , the BIGMED project (IKT 259055), and the SIRIUS Centre for Scalable Data Access (Research ...
doi:10.1016/j.websem.2017.05.005
fatcat:ghpdmsaoizc6bgly4cuyxljvq4
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