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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 database community Polystores is an emerging and promising approach for data federation that aims at designing a unified querying layer over multiple data models.  ...  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  ...  can be accessed by posing queries over the ontology, i.e., ontological queries.  ... 
doi:10.1109/bigdata.2016.7840898 dblp:conf/bigdataconf/KharlamovMBBBJL16 fatcat:qoo6qitn4nf6jiqwltr7ehqj3a


Ahmet Soylu, Martin Giese, Ernesto Jimenez-Ruiz, Evgeny Kharlamov, Dmitry Zheleznyakov, Ian Horrocks
2013 Proceedings of the Fifth International Conference on Management of Emergent Digital EcoSystems - MEDES '13  
In this paper, we specifically focus on end-user visual query formulation, demonstrate our preliminary ontology-based visual query system (i.e., interface), and discuss initial insights for alleviating  ...  A recent EU project, named Optique, with a strong industrial perspective, strives to enable scalable end-user access to Big Data.  ...  [12] ), that allow access to relational data over ontologies.  ... 
doi:10.1145/2536146.2536149 dblp:conf/medes/SoyluGJKZH13 fatcat:spyaxc4fwrexjejxmj36tsg5uy

Live linked open sensor database

Danh Le-Phuoc, Josiane Xavier Parreira, Michael Hausenblas, Yuanbo Han, Manfred Hauswirth
2010 Proceedings of the 6th International Conference on Semantic Systems - I-SEMANTICS '10  
Most of the time such data is locked inside specific applications and only accessible within organizational boundaries.  ...  SensorMasher publishes sensor data as Web data sources which can then easily be integrated with other (linked) data sources and sensor data.  ...  In SensorMasher, we try to map SPARQL queries to query plans over the continuous queries of the underlying data stream management system (DSMS).  ... 
doi:10.1145/1839707.1839763 dblp:conf/i-semantics/PhuocPHHH10 fatcat:4tzuetxrbvdtjco4jcmult5naa

Querying industrial stream-temporal data: An ontology-based visual approach1

Ahmet Soylu, Martin Giese, Rudolf Schlatte, Ernesto Jimenez-Ruiz, Evgeny Kharlamov, Özgür Özçep, Christian Neuenstadt, Sebastian Brandt, Antonis Bikakis, Thanos G. Stavropoulos, Georgios Meditskos
2017 Journal of Ambient Intelligence and Smart Environments  
To this end, this article reports an ontology-based visual query system (VQS), namely OptiqueVQS, how it is extended for a stream-temporal query language called STARQL, a user experiment with the domain  ...  Moreover, recent ontology-based data access (OBDA) technologies enable end users to formulate their information needs into queries using a set of terms defined in an ontology.  ...  Therefore, ontology-based visual query formulation would not be a pragmatic solution for industry without technologies for ontology-based data access over relational databases.  ... 
doi:10.3233/ais-160415 fatcat:4lscdqnu7jgexdg444kdajfywq

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.  ...  This paper presents an initial architectural specification for the Optique system along with the individual system components.  ...  Fabio Savo for insightful discussions. The authors are supported by the EU project Optique (FP7-IP-318338).  ... 
doi:10.1007/978-3-642-41242-4_11 fatcat:axcmbjydbzfnth7f4gzl22dpky

How Semantic Technologies Can Enhance Data Access at Siemens Energy [chapter]

Evgeny Kharlamov, Nina Solomakhina, Özgür Lütfü Özçep, Dmitriy Zheleznyakov, Thomas Hubauer, Steffen Lamparter, Mikhail Roshchin, Ahmet Soylu, Stuart Watson
2014 Lecture Notes in Computer Science  
We advocate for Ontology Based Data Access (OBDA) as a suitable Semantic Web driven technology to address the challenge.  ...  We present a description and analysis of the data access challenge in the Siemens Energy.  ...  Ontology Based Data Access Ontology Based Data Access (OBDA) is a prominent approach for end-user oriented access to databases.  ... 
doi:10.1007/978-3-319-11964-9_38 fatcat:fzkk5pwsjzd25jcicvlvlgg7ae

Semantic access to streaming and static data at Siemens

Evgeny Kharlamov, Theofilos Mailis, Gulnar Mehdi, Christian Neuenstadt, Özgür Özçep, Mikhail Roshchin, Nina Solomakhina, Ahmet Soylu, Christoforos Svingos, Sebastian Brandt, Martin Giese, Yannis Ioannidis (+4 others)
2017 Journal of Web Semantics  
of both streaming and static data, a highly optimised backend, ExaStream, for processing such data, and a query formulation interface, OptiqueVQS, that allows to formulate STARQL queries without prior  ...  We advocate Ontology Based Data Access (OBDA) as a suitable Semantic Web driven technology to address the challenge.  ...  Ontology based data access Ontology Based Data Access (OBDA) is a prominent approach for end-user oriented access to databases.  ... 
doi:10.1016/j.websem.2017.02.001 fatcat:vbyec4wq3rc5nntgpp35bc4fwa

A Framework Uniting Ontology-Based Geodata Integration and Geovisual Analytics

Linfang Ding, Guohui Xiao, Diego Calvanese, Liqiu Meng
2020 ISPRS International Journal of Geo-Information  
In this framework, ontologies play a central role by providing a coherent view over the heterogeneous data, and by acting as a mediator for visual analysis tasks.  ...  ontology; (2) a geovisual analytics (GeoVA) module, designed for the exploration of the integrated data, by explicitly making use of standard ontologies.  ...  Several systems have been developed for visualizing RDF and SPARQL queries and results over spatial data. OptiqueVQS [52] is a visual query system for building SPARQL queries.  ... 
doi:10.3390/ijgi9080474 fatcat:l64aa3n3cnde3insjmvsejetta

A Web-Based Framework for Classification and Integration of News Articles Big Data using Ontology

2019 International journal of recent technology and engineering  
In this manner, it is along these lines seen as a combiner transversely over different things, information applications, and systems.  ...  data using ontologies.  ...  • Iterative user-centric development approach • Visual query formulation for the end-user, demonstrating the introductory visual query system based on ontology  ... 
doi:10.35940/ijrte.c5409.098319 fatcat:rm6glqhro5f6zd5vcmj5vam35m

Virtual Knowledge Graphs: An Overview of Systems and Use Cases

Guohui Xiao, Linfang Ding, Benjamin Cogrel, Diego Calvanese
2019 Data Intelligence  
In this paper, we present the virtual knowledge graph (VKG) paradigm for data integration and access, also known in the literature as Ontology-based Data Access.  ...  Integrating data and providing a convenient access to them are work-intensive, expensive but essential activities, as it is critical for organizations to be data-driven to stay competitive.  ...  For example, OptiqueVQS [50] is a visual SPARQL query interface that exploits the ontology and samples the data to allow users to build SPARQL queries in a graphical way.  ... 
doi:10.1162/dint_a_00011 fatcat:dogtoffhbncx7lxxagytwlxz2u

Propagating Visual Designs to Numerous Plots and Dashboards [article]

Saiful Khan and Phong H. Nguyen and Alfie Abdul-Rahman and Benjamin Bach and Min Chen and Euan Freeman and Cagatay Turkay
2021 arXiv   pre-print
In the process of developing an infrastructure for providing visualization and visual analytics (VIS) tools to epidemiologists and modeling scientists, we encountered a technical challenge for applying  ...  Technically, we utilize: an ontology to bring datasets, visual designs, and deployable plots and dashboards under the same management framework; multi-criteria search and ranking algorithms for discovering  ...  Brett (UKAEA) for their leadership in creating the SCRC data infrastructure that the VIS infrastructure depends on, and A. Lahiff and his STFC colleagues for maintaining the RAMP VIS VMs, and S.  ... 
arXiv:2107.08882v1 fatcat:y2uzomob3vdnnjiizdxn24uwa4

Handling temporal heterogeneous data for content-based management of large video collections

Nicolas Moënne-Loccoz, Bruno Janvier, Stéphane Marchand-Maillet, Eric Bruno
2006 Multimedia tools and applications  
However, unlike for other media, the management of a collection of video documents adds the problem of efficiently handling an overwhelming volume of temporal data.  ...  Keywords Video document · MPEG-7 · TREC video track · Content-based multimedia retrieval · ViCoDE Motivations Video data processing has for long been of high interest for the development of compression  ...  One advantage of OVAL over other data access libraries is that its abstraction enables generic VCR-like operations and also adds frame-precise random access facility to data streams.  ... 
doi:10.1007/s11042-006-0042-2 fatcat:oxv6cr6msvhz3hef2ldkofgipy

Scalable End-User Access to Big Data [chapter]

Martin Giese, Diego Calvanese, Peter Haase, Ian Horrocks, Yannis Ioannidis, Herald Kllapi, Manolis Koubarakis, Maurizio Lenzerini, Ralf Möller, Mariano Muro, Özgür Özçep, Riccardo Rosati (+4 others)
2013 Big Data Computing  
This chapter proposes steps towards the solution to the data access problem that end-users typically face when dealing with Big Data: • They need to pose ad hoc queries to a collection of data sources,  ...  possibly including streaming sources; • They are unable to query those sources on their own, but are dependent on assistance from IT experts; • The turnaround time for information requests is in the range  ...  In stream-based query an-swering scenarios, an algebraically specified query (over multiple combined streams set up for a specific application) might be implemented by several query plans that are optimized  ... 
doi:10.1201/b16014-9 fatcat:3kjl6gnc7badpjskpigoqqcf5u

Ontology-Based Data Access for Maritime Security [chapter]

Stefan Brüggemann, Konstantina Bereta, Guohui Xiao, Manolis Koubarakis
2016 Lecture Notes in Computer Science  
In this paper we describe how we address the challenge of combining and processing real-time and static data from different sources using ontology-based data access techniques, and we explain how the application  ...  The need for efficient processing of dynamic and/or static vessel data that come from different heterogeneous sources is emerged.  ...  Brüggemann is supported by the German BMBF project EMSec; Bereta and Xiao are supported by the EU under the large-scale integrating project (IP) Optique (Scalable End-user Access to Big Data), grant agreement  ... 
doi:10.1007/978-3-319-34129-3_45 fatcat:3lhzvlj4vrf6xbws5zip4fzvea

Estimating Fire Weather Indices Via Semantic Reasoning Over Wireless Sensor Network Data Streams

Lianli Gao, Michael Bruenig, Jane Hunter
2014 International journal of Web & Semantic Technology  
to the processing of data streams from a wireless sensor network deployed in the Springbrook region of South East Queensland.  ...  This paper describes the underlying ontologies, the semantic reasoning and the Semantic Fire Weather Index (SFWI) system that we have developed to enable domain experts to specify and adapt rules for calculating  ...  In addition, we developed a visualization interface that enables fire managers, and the general public to access the fire weather index data via an easy-to-use mapping and timeline interface.  ... 
doi:10.5121/ijwest.2014.5401 fatcat:xrls27uyfvbqvjj3p3nstnhyr4
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