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Analyzing real-world SPARQL queries and ontology-based data access in the context of probabilistic data

Joerg Schoenfisch, Heiner Stuckenschmidt
2017 International Journal of Approximate Reasoning  
Keywords: safeness of probabilistic queries, SPARQL, probabilistic data, linked data Motivation Ontology-based Data Access (ODBA) has received a lot of attention in the Semantic Web Community.  ...  However, there is no analysis on the safeness of probabilistic queries in real-world applications, or in other words the feasibility of fulfilling users' information needs over probabilistic data.  ...  The goal of our work is to develop data access methods that can use background knowledge in terms of a light-weight ontology and also deal with uncertainty in the data.  ... 
doi:10.1016/j.ijar.2017.08.005 fatcat:obyhbiuyhfhuhg5iwfglko5df4

Database Foundations for Scalable RDF Processing [chapter]

Katja Hose, Ralf Schenkel, Martin Theobald, Gerhard Weikum
2011 Lecture Notes in Computer Science  
The third part of the lecture is thus intended to provide a close-up on current approaches and platforms to make reasoning (e.g., in the form of probabilistic inference) with uncertain RDF data scalable  ...  As more and more data is provided in RDF format, storing huge amounts of RDF data and efficiently processing queries on such data is becoming increasingly important.  ...  The goal is to identify URIs that actually refer to the same real-world entity by finding matches analyzing values of inverse functional properties.  ... 
doi:10.1007/978-3-642-23032-5_4 fatcat:5owq3argizaj3epzu4yhuuxc6i

Combining ontological modelling and probabilistic reasoning for network management

Kasper Apajalahti, Eero Hyvönen, Juha Niiranen, Vilho Räisänen, Antonis Bikakis, Thanos G. Stavropoulos, Georgios Meditskos
2017 Journal of Ambient Intelligence and Smart Environments  
In this paper, a system is presented that takes into account the network context, analyses uncertain information, and infers network configurations by means of probabilistic reasoning.  ...  Experiments based on a prototype implementation demonstrate the value of semantic modelling and probabilistic reasoning in network status characterization, optimization, and visualization.  ...  The ontology is stored in a SPARQL server providing access to the ontology. The GUI is used to monitor and manage the system.  ... 
doi:10.3233/ais-160419 fatcat:v7vjcimw6fa6bfvsvz3sjdxooi

Semantic fusion of live Web content: System design and implementation experiences

Vincent Lenders
2013 2013 Workshop on Sensor Data Fusion: Trends, Solutions, Applications (SDF)  
We have implemented this architecture and tested its effectiveness using real-world live data from the Web over multiple weeks.  ...  Semantic data fusion techniques have the potential to provide a more suitable abstraction model for efficient search on this type of data.  ...  ACKNOWLEDGEMENTS We are specially grateful to Tobias Hofer and his team from basis06 for their continuous support in the different implementation phases of this project.  ... 
doi:10.1109/sdf.2013.6698256 dblp:conf/sdf/Lenders13 fatcat:o4553efhojawbnbj53hucoh4ym

Federated Semantic Data Management (Dagstuhl Seminar 17262)

Olaf Hartig, Maria-Esther Vidal, Johann-Christoph Freytag, Marc Herbstritt
2017 Dagstuhl Reports  
The discussions were centered around the following four themes, each of which was the focus of a separate working group: i) graph data models, ii) federated query processing, iii) access control and privacy  ...  This report documents the program and the outcomes of Dagstuhl Seminar 17262 "Federated Semantic Data Management" (FSDM).  ...  We are observing the rise and deployment of real world data integration systems based on federation and semantic technologies.  ... 
doi:10.4230/dagrep.7.6.135 dblp:journals/dagstuhl-reports/HartigVF17 fatcat:a7uvfkbt3bczldr54aikx3e274

Taming velocity and variety simultaneously in big data with stream reasoning

Emanuele Della Valle, Daniele Dell'Aglio, Alessandro Margara
2016 Proceedings of the 10th ACM International Conference on Distributed and Event-based Systems - DEBS '16  
Many "big data" applications must tame velocity (processing data in-motion) and variety (processing many different types of data) simultaneously.  ...  The paper mainly targets researchers and practitioners in the area of event and stream processing.  ...  They devised data models (RDF [24] ), query languages (SPARQL [34] ), modelling languages (OWL [36] ), and methodologies (Ontology Based Data Access (OBDA) [20] ) that ease data integration and enable  ... 
doi:10.1145/2933267.2933539 dblp:conf/debs/ValleDM16 fatcat:v4x3iozocfhqrndy2tvct3dygm

Enabling Web-scale data integration in biomedicine through Linked Open Data

Maulik R. Kamdar, Javier D. Fernández, Axel Polleres, Tania Tudorache, Mark A. Musen
2019 npj Digital Medicine  
Biomedical researchers face severe logistical and technical challenges to query, integrate, analyze, and visualize data from multiple diverse sources in the context of available biomedical knowledge.  ...  The biomedical research community has been one of the earliest adopters of these technologies and principles to publish data and knowledge on the Web as linked graphs and ontologies, hence creating the  ...  ., and M.M. have systematically analyzed the quality and semantic heterogeneity of biomedical ontologies and biomedical data sources in the Linked Open Data (LOD) cloud.  ... 
doi:10.1038/s41746-019-0162-5 pmid:31531395 pmcid:PMC6736878 fatcat:othhm3v53bc6hkcdzm4ugqc2yy

A semantic approach to polystores

E. Kharlamov, T. Mailis, K. Bereta, D. Bilidas, S. Brandt, E. Jimenez-Ruiz, S. Lamparter, C. Neuenstadt, O. Ozcep, A. Soylu, C. Svingos, G. Xiao (+8 others)
2016 2016 IEEE International Conference on Big Data (Big Data)  
In the Semantic Web community a similar in spirit approach of Ontology-Based Data Access (OBDA) has been recently proposed, attracted a lot of attention, and proved its success in several industrial scenarios  ...  In the database community Polystores is an emerging and promising approach for data federation that aims at designing a unified querying layer over multiple data models.  ...  The key concept of Ontology Based Data Access (OBDA) is to use an ontology, i.e. a formal conceptualisation of the application domain, to mediate access to relational and non-relational data-sources.  ... 
doi:10.1109/bigdata.2016.7840898 dblp:conf/bigdataconf/KharlamovMBBBJL16 fatcat:qoo6qitn4nf6jiqwltr7ehqj3a

Data management in Systems biology II - Outlook towards the semantic web [article]

Gerhard Mayer
2009 arXiv   pre-print
The benefit of using ontologies, defined by the respective data standards, is shown.  ...  It is presented how ontologies can be used for the semantic enrichment of data and how this can contribute to the vision of the semantic web to become true.  ...  Acknowledgements This work was supported by the Federal Ministry of Education and Research (BMBF, Berlin, Germany, HepatoSys systems biology funding initiative, grant 0313080F).  ... 
arXiv:0912.2822v1 fatcat:2sl6qr3f2ve57g55gzxd3v4tpy

Stream reasoning: A survey and outlook

Daniele Dell'Aglio, Emanuele Della Valle, Frank van Harmelen, Abraham Bernstein, Tobias Kuhn
2017 Data Science  
Acknowledgements We would like to thank Fredrik Heintz, Ruben Verborgh and Paul Fodor for their valuable reviews. Their comments contributed in improving the quality of this article.  ...  We would also like to thank the Swiss National Science Foundation (SNF) for partial support of this work unter contract number #407550_167177.  ...  The Spatial and Temporal ontology Access with a Reasoning-based Query Language (STARQL) [102] proposes a framework to access and query heterogeneous sensor data through ontologies.  ... 
doi:10.3233/ds-170006 dblp:journals/datasci/DellAglioVHB17 fatcat:fgnskaiz4fd2nlzeltpo356um4

Report on the EDBT/ICDT 2010 workshop on updates in XML

Michael Benedikt, Daniela Florescu, Philippa Gardner, Giovanna Guerrini, Marco Mesiti, Emmanuel Waller
2010 SIGMOD record  
The first international workshop on Updates in XML [1] was held in conjunction with the EDBT/ICDT conference in Lausanne (Switzerland) on March 22, 2010, and attracted approximately 25 participants, culminating  ...  This paper summarizes the main ideas presented in the workshop as well as interesting perspectives identified by the participants.  ...  While existing approaches focus on read-only access, the proposed OntoAccess approach adds ontology-based write access to relational data.  ... 
doi:10.1145/1860702.1860713 fatcat:t4esorolvvdajawik7lkygcnmu

The Internet of Things: A Survey from the Data-Centric Perspective [chapter]

Charu C. Aggarwal, Naveen Ashish, Amit Sheth
2012 Managing and Mining Sensor Data  
Such data needs to be processed in real-time and the processing may be highly distributed in nature.  ...  The collection and processing of such data leads to unprecedented challenges in mining and processing such data.  ...  SPARQL (SPARQL Protocol and RDF Query Language) [88] is an RDF query language for querying and manipulating data stored in the RDF format.  ... 
doi:10.1007/978-1-4614-6309-2_12 fatcat:rgrbqjfllzb2tkgnixdrzfvdfy

Challenges and Opportunities in Applying Semantics to Improve Access Control in the Field of Internet of Things

Riste Stojanov, Vladimir Zdraveski, Dimitar Trajanov
2018 Electronics  
Therefore, we analyze the current state of the art in this area and identify the challenges and opportunities for improved access control in a semantically enriched IoT environment.  ...  Applying semantics to IoT access control opens a lot of opportunities, such as semantic inference and reasoning, easy data sharing, data trading, new approaches to authentication, security policies based  ...  The significance of the privacy is becoming crucial in the digital world, so one of the most important aspects here is the ability to control the data access, i.e. to define who can obtain the data and  ... 
doi:10.7251/els1721066s fatcat:elxdx7trxfbyreiwtowtfbovvy

Integrating Semantic Run-Time Modelsfor Adaptive Software Systems

Francesco Poggi, Davide Rossi, Paolo Ciancarini
2019 Journal of Web Engineering  
We discuss merits and limits of our approach based on semantic runtime models both in the context of this specific case study and in a broader scope.  ...  Ontologies are used to manage the interaction and integration of these models with disparate data sources.  ...  Acknowledgments This paper was supported by the MIUR-PRIN GAUSS Project, and by the Consorzio Interuniversitario per l'Informatica (CINI) under projects EMC2 and MANTIS.  ... 
doi:10.13052/jwe1540-9589.18131 fatcat:hz3ox762ojfwrkpnxhxnmt6up4

Ontology-Based User Context Management: The Challenges of Imperfection and Time-Dependence [chapter]

Andreas Schmidt
2006 Lecture Notes in Computer Science  
The approach presented in this paper presents a layered data model which structures the problems and is geared towards flexible and efficient query processing in combination of relational database and  ...  Robust and scalable user context management is the key enabler for the emerging context-and situation-aware applications, and ontology-based approaches have shown their usefulness for capturing especially  ...  Pull context sources can be queries on demand as soon as queries for covered features arrive. The reasoning service provides access to ontological data.  ... 
doi:10.1007/11914853_64 fatcat:jh7dibhkzvhhlk57ngjvmpidxy
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