A5004081767- Semantic Web and Ontologies
- Service-Oriented Architecture and Web Services
- Advanced Database Systems and Queries
- Data Management and Algorithms
- Logic, Reasoning, and Knowledge
- Business Process Modeling and Analysis
- Multi-Agent Systems and Negotiation
- Data Quality and Management
- Advanced Software Engineering Methodologies
- Context-Aware Activity Recognition Systems
- Scientific Computing and Data Management
- Software System Performance and Reliability
- AI-based Problem Solving and Planning
- Constraint Satisfaction and Optimization
- Cloud Computing and Resource Management
- Biomedical Text Mining and Ontologies
- Mobile Agent-Based Network Management
- Topic Modeling
- Recommender Systems and Techniques
- Web Data Mining and Analysis
- Natural Language Processing Techniques
- Domain Adaptation and Few-Shot Learning
- Distributed systems and fault tolerance
- Access Control and Trust
- Advanced Computational Techniques and Applications
Foundation for Research and Technology Hellas
2014-2024
University of Crete
2013-2024
FORTH Institute of Computer Science
2015-2024
FORTH Institute of Electronic Structure and Laser
2013-2024
Czech Academy of Sciences, Institute of Computer Science
2004-2024
Hella (Germany)
2004-2023
University College London
2023
Laboratoire d'Informatique de Paris-Nord
2009-2022
Cambridge University Press
2022
New York University Press
2022
Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces, require the management of large volumes metadata, i.e., information describing available content services. Better knowledge about their meaning, usage, accessibility or quality will considerably facilitate an automated processing resources. The Resource Description Framework (RDF) enables creation exchange metadata normal data. Although voluminous RDF descriptions are already appearing, sufficiently...
Abstract Ontologies play a key role in the advent of Semantic Web. An important problem when dealing with ontologies is modification an existing ontology response to certain need for change. This complex and multifaceted one, because it can take several different forms includes related subproblems, like heterogeneity resolution or keeping track versions. As result, being addressed by different, but closely often overlapping research disciplines. Unfortunately, boundaries each such discipline...
The goal of service oriented architectures (SOAs) is to enable the creation business applications through automatic discovery and composition independently developed deployed (Web) services. Automatic Web services (WSs) can be achieved by incorporating semantics into a richer WS description model (WSDM) use semantic (SW) technologies in matchmaking selection (i.e., discovery) process. A sufficiently rich WSDM should encompass not only functional but also nonfunctional aspects like quality...
Abstract Ontology evolution aims at maintaining an ontology up to date with respect changes in the domain that it models or novel requirements of information systems enables. The recent industrial adoption Semantic Web techniques, which rely on ontologies, has led increased importance research. Typical approaches are designed as multiple-stage processes combining techniques from a variety fields (e.g., natural language processing and reasoning). However, few existing surveys this topic lack...
As the Web service paradigm gains popularity for its promise to transform way business is conducted, number of deployed services grows with a fast rate. While sophisticated semantic discovery mechanisms have been invented overcome UDDI's syntactic solution in order provide more recallable and precise results, amount functionally equivalent returned still large. The this problem description QoS non-functional aspect services. encompasses performance can be used as discriminator factor...
QoS-based Web Service (WS) discovery has been recognized as the main solution for filtering and selecting between functionally equivalent WSs stored in registries or other types of repositories. There are two techniques WS matchmaking (filtering): ontology-based Constraint Programming (CP)-based. Unfortunately, first technique is not efficient it based on rather immature technology ontology reasoning, while second one accurate syntactic descriptions faulty metrics. In our previous work, we...
This paper focuses on the optimization of navigation through voluminous subsumption hierarchies topics employed by Portal Catalogs like Netscape Open Directory (ODP). We advocate for use labeling schemes modeling these in order to efficiently answer queries such as check, descendants, ancestors or nearest common ancestor, which usually require costly transitive closure computations. first give a qualitative comparison three main families schemes, namely bit vector, prefix and interval based...
While various platforms are offering facilities for single-cloud application design, deployment and provisioning, there is a need to move multiple clouds in order achieve cost-effectiveness avoid vendor lock-in. Apart from not supporting multi-cloud management, many usually focus on the provisioning phases of cloud-based lifecycle by neglecting design phase. However, selection best possible cloud service composition affects phase, as more distant optimality selected solution, adaptation...
Gravitational Waves (GWs) were observed for the first time in 2015, one century after Einstein predicted their existence. There is now growing interest to extend detection bandwidth low frequency. The scientific potential of multi-frequency GW astronomy enormous as it would enable obtain a more complete picture cosmic events and mechanisms. This unique entirely new opportunity future astronomy, success which depends upon decisions being made on existing infrastructures. prospect combining...
Given the explosive growth in both data size and schema complexity, sources are becoming increasingly difficult to use comprehend. Summarization aspires produce an abridged version of original source highlighting its most representative concepts. In this paper, we present ad vanced RDF Digest, a novel platform that automatically produces visualizes high quality summaries RDF/S Knowledge Bases (KBs). A summary is valid RDFS graph includes concepts schema, adapted corresponding instances. To...