George A Vouros Authors: Add personal information
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Agents, representing flights, have limited information about others' payoffs and preferences, and need to coordinate to achieve their tasks while adhering to operational constraints. We formalize ... Keywords: Air Traffic Management, Demand Capacity Balance, Multi-agent reinforcement learning, congestion problems 2 June 2018 WIMS '18: Proceedings of the 8th International Conference on Web Intelligence, Mining and Semantics Publisher: ACM Bibliometrics: Citation Count: 0 Downloads (6 Weeks): 12,   Downloads (12 Months): 13,   Downloads (Overall): 13 Full text available: PDF Recent state-of-the-art approaches and technologies for generating RDF graphs from non-RDF data, use languages designed for specifying transformations or mappings to data of various kinds of format. This paper presents a new approach for the generation of ontology-annotated RDF graphs, linking data from multiple heterogeneous streaming and archival data sources, ... Keywords: RDF generation, RDF knowledge graph, data-to-RDF mapping 3 December 2017 Expert Systems with Applications: An International Journal: Volume 90 Issue C, December 2017 Publisher: Pergamon Press, Inc. Bibliometrics: Citation Count: 0 Generic framework for ontology-based data access, integration and reasoning from disparate sources.Distribution of knowledge, data and tasks for data retrieval, integration and reasoning.Processing data close to the data sources. The correlated exploitation of disparate and heterogeneous data sources is important to the efficacy of many analytics tasks. Currently in application ... Keywords: Distributed ontology, Distributed reasoning, Ontology-based data access, Ontology-based data integration, Ontology-based event recognition 4 September 2017 Semantics2017: Proceedings of the 13th International Conference on Semantic Systems Publisher: ACM Bibliometrics: Citation Count: 2 Downloads (6 Weeks): 6,   Downloads (12 Months): 42,   Downloads (Overall): 42 Full text available: PDF Motivated by real-life emerging needs in critical domains, this paper proposes a coherent and generic ontology for the representation of semantic trajectories, in association to related events and contextual information, to support analytics. The main contribution of the proposed ontology is twofold: (a) The representation of semantic trajectories at varying, ... Keywords: analytics tasks, moving object ontology, semantic trajectory, data transformation, knowledge integration 5 May 2017 AAMAS '17: Proceedings of the 16th Conference on Autonomous Agents and MultiAgent Systems Publisher: International Foundation for Autonomous Agents and Multiagent Systems Bibliometrics: Citation Count: 1 Downloads (6 Weeks): 2,   Downloads (12 Months): 27,   Downloads (Overall): 44 Full text available: PDF This article explores the computation of conventions in agents' societies via social learning methods, when agents aim to perform tasks collaboratively with their acquaintances. The settings considered require agents to accomplish multiple tasks simultaneously w.r.t. operational constraints, in coordination with their peers, even when they have limited monitoring and interaction ... Keywords: social conventions, multi-agent reinforcement learning 6 May 2016 SETN '16: Proceedings of the 9th Hellenic Conference on Artificial Intelligence Publisher: ACM Bibliometrics: Citation Count: 0 Downloads (6 Weeks): 5,   Downloads (12 Months): 68,   Downloads (Overall): 154 Full text available: PDF This paper proposes a single agent system towards solving energy management issues in solar microgrids. The system considered consists of a Photovoltaic (PV) source, a battery bank, a desalination unit (responsible for providing the demanded water) and a local consumer. The trade-offs and complexities involved in the operation of the ... Keywords: energy management, microgrid, Q-learning, Reinforcement learning 7 November 2015 Knowledge and Information Systems: Volume 45 Issue 2, November 2015 Publisher: Springer-Verlag New York, Inc. Bibliometrics: Citation Count: 3 Combining ontologies in expressive fragments of Description Logics in inherently distributed peer-to-peer settings with autonomous peers is still a challenge in the general case. Although several modular ontology representation frameworks have been proposed for combining Description Logics knowledge bases, each of them has its own strengths and limitations. In this ... Keywords: Peer-to-peer systems, Description Logics, Distributed reasoning 8 September 2015 SEMANTICS '15: Proceedings of the 11th International Conference on Semantic Systems Publisher: ACM Bibliometrics: Citation Count: 0 Downloads (6 Weeks): 3,   Downloads (12 Months): 11,   Downloads (Overall): 69 Full text available: PDF This paper proposes a distributed framework for accessing, integrating and reasoning with data from heterogeneous, disparate data sources. The proposed solution combines the E -- SHIQ modular ontology representation framework with the Ontop ontology-based data access (OBDA) technology. Distribution of knowledge allows the treatment of data from disparate sources in ... Keywords: event recognition, distributed ontology-based data access, modular ontology, data integration 9 August 2015 Information Systems Frontiers: Volume 17 Issue 4, August 2015 Publisher: Kluwer Academic Publishers Bibliometrics: Citation Count: 0 10 July 2015 WIMS '15: Proceedings of the 5th International Conference on Web Intelligence, Mining and Semantics Publisher: ACM Bibliometrics: Citation Count: 0 Downloads (6 Weeks): 2,   Downloads (12 Months): 6,   Downloads (Overall): 80 Full text available: PDF Recent environmental disasters at sea have highlighted the need for efficient maritime surveillance and incident management. Currently, maritime navigation technology automatically provides real time data from vessels, which together with historical data, can be processed in an integrated way to detect complex events and support decision making. Ontology-Based Data Access ... Keywords: event recognition, Ontology based data access, data integration 11 May 2015 CARE/[email protected]'15: Proceedings of the 6th and 2nd International Conference on Advances in Social Computing and Multiagent Systems - 6th International Workshop on Collaborative Agents Research and Development, and Second International Workshop on Multiagent Foundations of Social Computing Publisher: Springer Bibliometrics: Citation Count: 0 This paper explores the emergence of norms in agents' societies when agents play multiple - even incompatible - roles in their social contexts simultaneously, and have limited interaction ranges. Specifically, this article proposes two reinforcement learning methods for agents to compute agreements on strategies for using common resources to perform ... 12 February 2015 ACM Transactions on Computational Logic (TOCL): Volume 16 Issue 2, March 2015 Publisher: ACM Bibliometrics: Citation Count: 7 Downloads (6 Weeks): 7,   Downloads (12 Months): 50,   Downloads (Overall): 291 Full text available: PDF Symbolic event recognition systems have been successfully applied to a variety of application domains, extracting useful information in the form of events, allowing experts or other systems to monitor and respond when significant events are recognised. In a typical event recognition application, however, these systems often have to deal with ... Keywords: probabilistic inference, machine learning, uncertainty, Events 13 October 2013 OM'13: Proceedings of the 8th International Conference on Ontology Matching - Volume 1111 Publisher: CEUR-WS.org Bibliometrics: Citation Count: 0 The paper presents the SYNTHESIS platform, a system for automatic ontology alignment. The system supports the model-based synthesis of different individual matching methods under a co-operational framework. The configuration that has been tested over the datasets provided by the OAEI 2013 tracks incorporates four matching methods. The paper provides a ... 14 September 2013 PCI '13: Proceedings of the 17th Panhellenic Conference on Informatics Publisher: ACM Bibliometrics: Citation Count: 1 Downloads (6 Weeks): 2,   Downloads (12 Months): 8,   Downloads (Overall): 43 Full text available: PDF The interlinking, maintenance and updating of different Linked Data repositories is steadily becoming a critical issue as the amount of published data increases. Hence, the automation or the provision of substantial computational support in various phases of the management process is a particularly important topic. The present paper discusses the ... Keywords: ontology alignment, knowledge management, linked data 15 May 2013 AAMAS '13: Proceedings of the 2013 international conference on Autonomous agents and multi-agent systems Publisher: International Foundation for Autonomous Agents and Multiagent Systems Bibliometrics: Citation Count: 3 Downloads (6 Weeks): 2,   Downloads (12 Months): 11,   Downloads (Overall): 57 Full text available: PDF This paper proposes a generic decentralized method for interconnected entities to compute globally coherent sets of mappings with respect to the semantics of ontological specifications and their subjective mapping preferences. This problem is formed as an optimization problem between inter-dependent agents. Globally coherent sets of mappings are computed by means ... Keywords: agent based peer-to-peer systems, ontology alignment, semantic agreement, semantic coordination 16 January 2013 Artificial Intelligence Review: Volume 39 Issue 1, January 2013 Publisher: Kluwer Academic Publishers Bibliometrics: Citation Count: 0 17 January 2013 Artificial Intelligence Review: Volume 39 Issue 1, January 2013 Publisher: Kluwer Academic Publishers Bibliometrics: Citation Count: 1 The notion of Multi-Agent System environment is currently considered as a mediating entity, functioning as enabler but possibly also as a manager and constrainer of agent actions, perceptions, and interactions. In this paper, we analyze how the environment could be a first class abstraction to support the building, the development ... Keywords: Norm, Trust, Agreement technologies, Organization, Argumentation, Environment, Negotiation, Semantic 18 November 2012 ICTAI '12: Proceedings of the 2012 IEEE 24th International Conference on Tools with Artificial Intelligence - Volume 01 Publisher: IEEE Computer Society Bibliometrics: Citation Count: 0 Ontology modularization concerns about extracting ontology units from ontologies and partitioning large ontologies to possibly interdependent ontology units. Each unit specifies a specific context for performing ontology maintenance, evolution and reasoning tasks, which nevertheless has to be combined with chunks of tasks performed in other units. The modularization task is ... Keywords: Modularization, Distributed Reasoning, Description Logics 19 November 2012 ACM Transactions on Speech and Language Processing (TSLP): Volume 9 Issue 3, November 2012 Publisher: ACM Bibliometrics: Citation Count: 1 Downloads (6 Weeks): 6,   Downloads (12 Months): 48,   Downloads (Overall): 400 Full text available: PDF Intuition dictates that figurative language and especially metaphorical expressions should convey sentiment. It is the aim of this work to validate this intuition by showing that figurative language (metaphors) appearing in a sentence drive the polarity of that sentence. Towards this target, the current article proposes an approach for sentiment ... Keywords: metaphorical expressions, Figurative language, sentiment classification of word senses, word sense disambiguation, sentiment analysis, sentiment classification of sentences 20 May 2012 SETN'12: Proceedings of the 7th Hellenic conference on Artificial Intelligence: theories and applications Publisher: Springer-Verlag Bibliometrics: Citation Count: 0 While there has been a great deal of work concerning distributed reasoning with ontologies, in most cases either only TBox reasoning is concerned, or ABox reasoning is supported for languages of limited expressivity. To a greater extent than other representation frameworks, the proposed $E^{DDL} _{HQ^+}$ $\mathcal{SHIQ}$ framework allows peers to ...