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Dependencies to Optimize Ontology Based Data Access

Mariano Rodriguez-Muro, Diego Calvanese
2011 International Workshop on Description Logics  
Query answering in Ontology Based Data Access (OBDA) exploits the knowledge of an ontology's TBox to deal with incompleteness of the ABox (or data source).  ...  Specifically, we first show that we can characterize completeness of an ABox by means of dependencies, and that we can use these to optimize DL-LiteA TBoxes.  ...  Introduction The current approaches to Ontology Based Data Access (OBDA) with lightweight Description Logics (DLs) of the DL-Lite family [2] rely on query reformulation.  ... 
dblp:conf/dlog/Rodriguez-MuroC11 fatcat:fgrekqnrjrcofao7i6ampxvosq

Using cooperatives ontologies for the customization of hybrid mediator interrogation process

Cherrat LOUBNA, Ezziyyani MOSTAFA, Mohammed ESSAAIDI, Omar KASSARA, Bennouna MUSTAPHA
2011 Annals of Spiru Haret University Economic Series  
The explosion of information sources accessible via the Web created the need for mediation tools between users and heterogeneous information sources on the Web.  ...  sources, and secondly ensure sharing the knowledge between users which will facilitate analysis of information and improve the data quality research process in space and time.  ...  Indeed, our ontology model is based on a oriented graph of dependence between entities of data sources integrated by the mediator.  ... 
doaj:8b6556a0069a4aa7917db418a5d91791 fatcat:tjunxi7jazbr7mqrsnr5uacety

Interoperable geometry and mesh components for SciDAC applications

T J Tautges, P Knupp, J A Kraftcheck, H J Kim
2005 Journal of Physics, Conference Series  
techniques, to form a SciDAC shape optimization application.  ...  The TSTT data model described in this paper allows components involved in the shape optimization application to be coupled at a variety of levels, from coarse black-box coupling (e.g. to generate a model  ...  The flexibilities in data types and level of access is crucial to component-based applications, since they facilitate changing interactions between components and tools (something which is quite likely  ... 
doi:10.1088/1742-6596/16/1/067 fatcat:z4uyordhwbggniqnrsdxzaogs4

Ontology-based data integration methods: a framework for comparison

Agustina Buccell, Alejandra Cechich, Nieves R. Brisaboa
2005 Revista Colombiana de Computación  
This survey describes seven systems and three proposals for ontology -based data integration.  ...  Keywords: Data Integration, Ontology, Semantic Heterogeneity.  ...  First of all, the Query Construction is performed and it is followed by the Access to Underlying Data, and the Controlled Query Expansion to New Ontologies steps.  ... 
doaj:2ba9f9a7c3d44c83b155e127e177ccbc fatcat:gdfg7pwaxjbkjeifj6geey2gkm

A Survey on Tools essential for Semantic web Research

Jenice AromaR, Mathew Kurian
2013 International Journal of Computer Applications  
Most of the efficient tools are open for access. Certain commercial tools for specific mode of development are also available.  ...  The importance of Semantic web is due to the increased level of appropriate results on information retrieval. It brings a wide participation of researchers all over the world.  ...  It leads to further enhancements towards Heuristic Optimizations. The Description Logics are logic based knowledge representations of data.  ... 
doi:10.5120/10109-4766 fatcat:7vzmzajcl5gj7mmqz4ga7sk3ty

An Ontology Based Approach to Interaction Ambient Design

Augusto Celentano, Andrea Okroglic, Fabio Pittarello
2007 2007 International Conference on Mobile Data Management  
A design approach is discussed, based on ontologies describing ambients, activities and services.  ...  We discuss the design of interaction ambients, which are ambients populated with fixed and mobile services, accessible through distributed interfaces.  ...  resulting OWL domain dependent ontology.  ... 
doi:10.1109/mdm.2007.87 dblp:conf/mdm/CelentanoOP07 fatcat:a3q7bdgzvncdlgwfcoam6umhqm

How Modern Deductive Database Systems Can Enhance Data Integration

Francesco Calimeri, Simona Perri, Giorgio Terracina, Jessica Zangari
2018 Sistemi Evoluti per Basi di Dati  
Data integration systems provide a transparent access to heterogeneous, possibly distributed, sources; deductive database and their extensions allow to easily address complex issues arising in data integration  ...  However, the gap between state-of-the-art deductive databases and data integration systems is still to be closed.  ...  Similarly, #export sql directives are used to populate specific tables with the extension of a predicate. Ontology-Based Data Access.  ... 
dblp:conf/sebd/CalimeriPTZ18 fatcat:bnlclbtnnvaclo6vseh24ng5wq

A Parallel Reasoner for the Description Logic ALC

Kejia Wu, Volker Haarslev
2012 International Workshop on Description Logics  
Multi-processor/core systems have become ubiquitous but the vast majority of OWL reasoners can process ontologies only sequentially.  ...  This observation motivates our work on the design and evaluation of Deslog, a parallel tableau-based description logic reasoner for ALC.  ...  Based on consequence-based reasoning and the results of [3] , the work in [18] reports on a highly optimized reasoner that can classify EL ontologies concurrently.  ... 
dblp:conf/dlog/WuH12 fatcat:nzg6zxi5qnegvdja3bbc5xykgu

Designing Component-Based Semantic Web Applications with DESWAP

Olaf Hartig, Martin Kost, Johann Christoph Freytag
2008 International Semantic Web Conference  
We enable users to specify dependencies between the required components, an issue not considered by existing approaches.  ...  To realize our approach in DESWAP we developed a knowledge base with comprehensive semantic descriptions of software and their functionalities.  ...  A SPARQL endpoint provides machine-based access to the knowledge base. For human users we provide a Web-based interface that enables browsing as well as editing the data in the catalog.  ... 
dblp:conf/semweb/HartigKF08 fatcat:yuzfa2e5hfeplepj54ikjo7oam

Distributed Query Processing on the Cloud: the Optique Point of View (Short Paper)

Herald Kllapi, Dimitris Bilidas, Ian Horrocks, Yannis E. Ioannidis, Ernesto Jiménez-Ruiz, Evgeny Kharlamov, Manolis Koubarakis, Dmitriy Zheleznyakov
2013 W3C Web Ontology Language (OWL) Experiences and Directions Workshop (OWLED)  
The Optique European project 3 [6] aims at providing an end-to-end solution for scalable access to Big Data integration, where end users will formulate queries based on a familiar conceptualization of  ...  From the users' queries the Optique platform will automatically generate appropriate queries over the underlying integrated data, optimize and execute them on the Cloud.  ...  This will provide valuable insights for the application of semantic technologies to Big Data integration problems in industry.  ... 
dblp:conf/owled/KllapiBHIJKKZ13 fatcat:td37tswk35clveokyztjx4mmgm

A framework for autonomic, ontology-based IT management

Fabian Meyer, Reinhold Kroeger
2015 2015 11th International Conference on Network and Service Management (CNSM)  
In this paper, dedicated solutions for each of those problems will be presented and combined into a comprehensive, ontology-based management framework.  ...  standards and the integration of continuous monitoring data is difficult.  ...  The context is combined with policies, modeled in the Organization Based Access Control (Or-BAC) [14] , [15] ontology and SWRL rules are applied to identify attacker and target.  ... 
doi:10.1109/cnsm.2015.7367342 dblp:conf/cnsm/MeyerK15 fatcat:f6q5prm6obgcxa4bguhqtnc3wq

Semantic Web Query on e-Governance Data and Designing Ontology for Agriculture Domain

Swaran Lata, Bhaskar Sinha, Ela Kumar, Somnath Chandra, Raghu Arora
2013 International journal of Web & Semantic Technology  
digital information based economy that we have today.  ...  With the possible localization of spread raw formatted Indian government data, at different locations are thought to have integrated with each other using the internet web technology as -Semantic Web Network  ...  Optimized results through graph based search techniques justifies to adopt semantic web technology.  ... 
doi:10.5121/ijwest.2013.4307 fatcat:lsopsbudszgvpb27gpiscpvtvq

On Rewriting, Answering Queries in OBDA Systems for Big Data (Short Paper)

Diego Calvanese, Ian Horrocks, Ernesto Jiménez-Ruiz, Evgeny Kharlamov, Michael Meier, Mariano Rodriguez-Muro, Dmitriy Zheleznyakov
2013 W3C Web Ontology Language (OWL) Experiences and Directions Workshop (OWLED)  
The project Optiqueaims at providing an end-to-end solution for scalable access to Big Data integration, were end users will formulate queries based on a familiar conceptualization of the underlying domain  ...  From the users queries the Optique platform will automatically generate appropriate queries over the underlying integrated data, optimize and execute them.  ...  The approach, known as "Ontology-Based Data Access" (OBDA) [13, 2] , has the potential to address the data access problem by automating the translation process of the users information needs.  ... 
dblp:conf/owled/CalvaneseHJKMRZ13 fatcat:tysxybfoora2tbxnt3sn6dnfxa

Optique: Towards OBDA Systems for Industry [chapter]

Evgeny Kharlamov, Ernesto Jiménez-Ruiz, Dmitriy Zheleznyakov, Dimitris Bilidas, Martin Giese, Peter Haase, Ian Horrocks, Herald Kllapi, Manolis Koubarakis, Özgür Özçep, Mariano Rodríguez-Muro, Riccardo Rosati (+4 others)
2013 Lecture Notes in Computer Science  
The recently started EU FP7-funded project Optique will develop an end-to-end OBDA system providing scalable end-user access to industrial Big Data stores.  ...  We are thankful to D. Calvanese, T. Hubauer, M. Meier, R. Möller, M. Roshchin, and D. Fabio Savo for insightful discussions. The authors are supported by the EU project Optique (FP7-IP-318338).  ...  The Optique project 1 [1] on 'Scalable End-user Access to Big Data' advocates a next generation of the well known Ontology-Based Data Access (OBDA) approach to address the Big Data dimensions and in  ... 
doi:10.1007/978-3-642-41242-4_11 fatcat:axcmbjydbzfnth7f4gzl22dpky

Managing Change: An Ontology Version Control System

Timothy Redmond, Michael Smith, Nick Drummond, Tania Tudorache
2008 W3C Web Ontology Language (OWL) Experiences and Directions Workshop (OWLED)  
This system will be used by many other ontology based services, such as incremental reasoning, collaborative ontology development, advanced ontology search, and ontology module extraction.  ...  In this paper we present the basic requirements and initial design of a system which manages and facilitates changes to an OWL ontology in a multi-editor environment.  ...  Acknowledgments This work was largely motivated by, and incubated during, a series of discussions on the future development path of the tools used to curate the NCI Thesaurus and related enterprise vocabularies  ... 
dblp:conf/owled/RedmondSDT08 fatcat:bt55fwc6x5cc7pgu6kj6gas2lq
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