• Conference Object  

      Adopting an Open Smart City Platform: A Survey 

      Achilleos, Achilleas; Markides, Christos; Konstantinidis, Andreas; Giorkas, Ioannis; Kapitsaki, Georgia M.; Mettouris, Christos; Papadopoulos, George A. (2019)
      Many municipalities adopt nowadays smart technologies offering smart services to their citizens towards the vision of a smart city. Different research works have revealed that the realisation of a smart city and its smart ...
    • Article  

      An automation component for cross-platform, context-aware applications development 

      Achilleos, Achilleas P.; Thoma, Marita; Kapitsaki, Georgia M.; Mettouris, Christos; Papadopoulos, George Angelos (2015)
      Context-aware computing faces many challenges mainly due to the increasing number and heterogeneity of context sources, since the Internet of Things introduces billions of devices. The development of context-aware applications ...
    • Conference Object  

      The connected vitality system: Enhancing social presence for older adults 

      Achilleos, Achilleas P.; Mettouris, Christos; Papadopoulos, George Angelos; Neureiter, K.; Rappold, C.; Moser, C.; Tscheligi, M.; Vajda, L.; Tóth, András L.; Hanak, P.; Jimenez, O.; Smit, R. (2013)
      The social isolation of older adults in Europe is a key and continuously growing issue that demands immediate attention. Older adults might feel isolated and lonely mainly because they lack human contact and social support. ...
    • Article  

      A context aware recommender system for creativity support tools 

      Sielis, George A.; Mettouris, Christos; Papadopoulos, George Angelos; Tzanavari, Aimilia; Dols, R. M. G.; Siebers, Q. (2011)
      The development of methods that can enhance the creativity process is becoming a continuous necessity. Through the years several researchers modelled and defined creativity focusing to the psychological aspect of the topic. ...
    • Article  

      A context modelling system and learning tool for context-aware recommender systems 

      Mettouris, Christos; Achilleos, Achilleas P.; Papadopoulos, George Angelos (2013)
      A critical contextual modelling issue in context-aware recommender systems research has to do with developing domain and application specific models that offer no reuse and sharing capabilities. Developers and researchers ...
    • Book Chapter  

      Context-aware recommendations using topic maps technology for the enhancement of the creativity process 

      Sielis, George A.; Mettouris, Christos; Tzanavari, Aimilia; Papadopoulos, George Angelos (IGI Global, 2011)
      Learning can be observed in the creativity process. When this process is supported by a Creativity Support Tool (CST), considering the context in which ideas are developed, as well as the context around the user himself ...
    • Article  

      Contextual modelling in context-aware recommender systems: A generic approach 

      Mettouris, Christos; Papadopoulos, George Angelos (2013)
      Context-aware recommender systems (CARS) use context data to enhance their recommendation outcomes by providing more personalized recommendations. Context modelling is a basic procedure towards this direction since it ...
    • Article  

      Designing context models for CARS incorporating partially observable context 

      Mettouris, Christos; Papadopoulos, George Angelos (2015)
      Context modelling and context reasoning are widely used topics in Context-Aware Recommender Systems research. Based on our research, the development of context models in context-aware recommender systems is problematic in ...
    • Conference Object  

      Developing an effective social presence system for older adults: The Connected Vitality Network 

      Achilleos, Achilleas P.; Mettouris, Christos; Papadopoulos, George Angelos; Neureiter, K.; Rappold, C.; Moser, C.; Tscheligi, M.; Vajda, L.; Tóth, András L.; Hanak, P.; Jimenez, O.; Smit, R. (2013)
      Communication over distance via the use of communication technologies aims to offer and enable contact for older adults, who are typically restricted in terms of mobility and tend to suffer from loneliness due to the lack ...
    • Conference Object  

      Exploiting context in location-based information systems 

      Mettouris, Christos; Papadopoulos, George Angelos (2010)
      The area of mobile location-based information systems enumerates many systems that enable their users to digitally annotate physical locations, providing in this way information to others about these locations, communicating ...
    • Conference Object  

      GDPR Compliance in the Design of the INFORM e-Learning Platform: a Case Study 

      Vanezi, Evangelia; Kouzapas, Dimitrios; Kapitsaki, Georgia M.; Costi, Theodora; Yeratziotis, Alexandros; Mettouris, Christos; Philippou, Anna; Papadopoulos, George A. (2019)
      The European Union General Data Protection Regulation (GDPR) governs personal data processing, aiming to ensure privacy in all systems handling such data. All systems that process personal data, including software systems ...
    • Article  

      Identifying context information in datasets 

      Kapitsaki, Georgia M.; Kalaitzidou, Giouliana; Mettouris, Christos; Achilleos, Achilleas P.; Papadopoulos, George Angelos (2015)
      Datasets are used in various applications assisting in performing reasoning and grouping actions on available data (e.g., clustering, classification, recommendations). Such sources of information may contain aspects relevant ...
    • Article  

      Personalized context-aware recommendations in 3D virtual learning environments 

      Granić, A.; Maratou, Vicky; Mettouris, Christos; Papadopoulos, George Angelos; Xenos, Michalis Nik (2015)
      The employment of 3D Virtual World (VW) platforms in an educational field is an emerging phenomenon that enlarges the concept of learning environments, providing users technology that creates an immersive learning experience. ...
    • Article  

      SciChallenge: A Social Media Aware Platform for Contest-Based STEM Education and Motivation of Young Students 

      Achilleos, Achilleas P.; Mettouris, Christos; Yeratziotis, Alexandros; Papadopoulos, George A.; Pllana, Sabri; Huber, Florian; Jäger, Bernhard; Leitner, Peter; Ocsovszky, Zsófia; Dinnyés, András (2019)
      .05).
    • Article  

      A survey on cost-effective context-aware distribution of social data streams over energy-efficient data centres 

      Kilanioti, Irene; Fernández-Montes, Alejandro; Fernández-Cerero, Damián; Mettouris, Christos; Nejkovic, Valentina; Bashroush, Rabih; Papadopoulos, George A. (2019)
      Social media have emerged in the last decade as a viable and ubiquitous means of communication. The ease of user content generation within these platforms, e.g. check-in information, multimedia data, etc., along with the ...
    • Book Chapter  

      Towards Efficient and Scalable Data-Intensive Content Delivery: State-of-the-Art, Issues and Challenges 

      Kilanioti, Irene; Fernández-Montes, Alejandro; Fernández-Cerero, Damián; Karageorgos, Anthony; Mettouris, Christos; Nejkovic, Valentina; Albanis, Nikolas; Bashroush, Rabih; Papadopoulos, George A. (Springer International Publishing, 2019)
      This chapter presents the authors’ work for the Case Study entitled “Delivering Social Media with Scalability” within the framework of High-Performance Modelling and Simulation for Big Data Applications (cHiPSet) COST ...
    • Conference Object  

      The UbiCARS Model-Driven Framework: Automating Development of Recommender Systems for Commerce 

      Mettouris, Christos; Achilleos, Achilleas; Kapitsaki, Georgia; Papadopoulos, George A. (Springer International Publishing, 2018)
      Recommendations of products to customers are proved to boost sales, increase customer satisfaction and improve user experience, making recommender systems an important tool for retail businesses. With recent technological ...
    • Article  

      Ubiquitous recommender systems 

      Mettouris, Christos; Papadopoulos, George Angelos (2014)
      Ubiquitous recommender systems combine characteristics from ubiquitous systems and recommender systems in order to provide personalized recommendations to users in ubiquitous environments. Although not a new research area, ...
    • Conference Object  

      UbiRS4Tourism: Design and Development of Point-of-Interest Recommender Systems Made Easy 

      Mettouris, Christos; Papadopoulos, George A. (e-Review of Tourism Research, 2019)
      Point-of-Interest (POI) recommender systems recommend POIs to users based on their preferences. POI recommender systems can be utilized in a variety of mobile and web applications for tourism, touristic websites, travel ...