articles by Konstantinos I Kotis
Big Data and Cognitive Computing journal, Special issue on "Big Data Analytics for Cultural Heritage", 2020
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Knowledge Engineering Review, 2020
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Challenges, 2020
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International Journal on Advances in Internet Technology, 2020
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Int. J. of Internet of Things and Cyber-Assurance,, 2020
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An iot-ontology for the representation of interconnected, clustered and aligned smart entities, 2012
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Int. J. Metadata, Semantics and Ontologies, 2008
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International Journal for Knowledge Engineering and Data Mining (IJKEDM), 2011
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International Journal of Agricultural and Environmental Information Systems (IJAEIS), Special issue on Intelligent Systems for Engineering Environmental Knowledge, 2011
An Introduction to the Special Issue
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arXiv.org, 2014
In many cases, government data is still "locked" in several "data silos", even within the boundar... more In many cases, government data is still "locked" in several "data silos", even within the boundaries of a single (inter-)national public organization with disparate and distributed organizational units and departments spread across multiple sites. Opening data and enabling its unified querying from a single site in an efficient and effective way is a semantic application integration and open government data challenge. This paper describes how NARA is using Semantic Web technology to implement an application integration approach within the boundaries of its organization via opening and querying multiple governmental data sources from a single site. The generic approach proposed, namely S3-AI, provides support to answering unified, ontology-mediated, federated queries to data produced and exploited by disparate applications, while these are being located in different organizational sites. S3-AI preserves ownership, autonomy and independency of applications and data. The paper extensively demonstrates S3-AI, using the D2RQ and Fuseki technologies, for addressing the needs of a governmental "IT helpdesk support" case.
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Expert Systems with Applications, 2017
Abstract The correlated exploitation of disparate and heterogeneous data sources is important to ... more Abstract The correlated exploitation of disparate and heterogeneous data sources is important to the efficacy of many analytics tasks. Currently in application domains of major interest, such as in the maritime and aviation domains, available technology provides real time surveillance data from moving entities, which together with archival static data, can be processed in an integrated way to detect complex events and support decision making. The variety of data in disparate sources, the heterogeneity of data formats, as well as the volume of data, make data retrieval, integration, and especially reasoning with these data, challenging tasks. This paper presents an ontology-based distributed framework that addresses conjunctively these challenges: Data retrieval, integration and reasoning with data from heterogeneous static or regularly updated data sources. The proposed \{OBDAIR\} framework provides the means to support building scalable data-driven domain-specific applications that support decision-making and problem-solving. This is achieved by processing large volumes of heterogeneous data close to the sources, supporting knowledge generation in a distributed/decentralized but still unified manner. \{OBDAIR\} integrates modular ontology representation frameworks and ontology-based data access frameworks: This article presents an instantiation of \{OBDAIR\} using the modular ontology representation framework E - \{SHIQ\} , and the Ontop ontology-based access system. This \{OBDAIR\} instance has been evaluated at recognising important complex events in the maritime domain using real-world data. Experiments show the potential of \{OBDAIR\} to detect complex events in large geographic areas with computational efficiency.
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Int. J. of Internet of Things and Cyber-Assurance, 2018
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conferences by Konstantinos I Kotis
2nd International Conference on Cultural Informatics, Communication & Media Studies, 2019
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10th International Conference on Information, Intelligence, Systems and Applications (IISA2019, Rion-Patra, 2019
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Thirteenth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies, UBICOMM 2019, Porto, 2019
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Thirteenth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies, UBICOMM 2019, Porto, 2019
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The 11th International Conference on Management of Digital EcoSystems (MEDES'19), Cyprus, ACM Digital Library, 11/2019, 2019
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Special track on Metadata & Semantics for Cultural Collections & Applications of the 14th Metadata and Semantics Research Conference, Springer, 2020
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2nd ERCIM-DIS Workshop on Large Scale and Federated Information Spaces, Amsterdam, The Netherlands, 2010
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he 24th Florida Artificial Intelligence Research Society Conference (FLAIRS-24), Special Track on Ontologies and Social Semantic Web for Intelligent Educational Systems (SWEL), Florida, USA, 2011
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articles by Konstantinos I Kotis
conferences by Konstantinos I Kotis