Browsing by Author "Konstantinidis, Andreas"

Now showing items 1-20 of 21

    • 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  

      Continuous decaying of telco big data with data postdiction 

      Costa, Constantinos; Konstantinidis, Andreas; Charalampous, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2019)
      In this paper, we present two novel decaying operators for Telco Big Data (TBD), coined TBD-DP and CTBD-DP that are founded on the notion of Data Postdiction. Unlike data prediction, which aims to make a statement about ...
    • Conference Object  

      CrODA-gator: An Open Access CrowdSourcing Platform as a Service 

      Massalas, Michalis; Konstantinidis, Andreas; Achilleos, Achilleas; Markides, Christos; Papadopoulos, and George (2018)
      The huge increase of mobile devices and the advancements of their sensing and computing capabilities have made the mobile crowd a real-time opportunistic data generator. Leveraging crowdsourced data creates new opportunities ...
    • Article  

      Crowdsourcing with smartphones 

      Chatzimilioudis, Georgios; Konstantinidis, Andreas; Laoudias, Christos; Zeinalipour-Yazdi, Constantinos D. (2012)
      Smartphones can reveal crowdsourcing's full potential and let users transparently contribute to complex and novel problem solving. This emerging area is illustrated through a taxonomy that classifies the mobile crowdsourcing ...
    • Conference Object  

      Decaying Telco Big Data with Data Postdiction 

      Costa, Constantinos; Charalampous, Andreas; Konstantinidis, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2018)
      In this paper, we present a novel decaying operator for Telco Big Data (TBD), coined TBD-DP (Data Postdiction). Unlike data prediction, which aims to make a statement about the future value of some tuple, our formulated ...
    • Conference Object  

      Demo: A programming cloud of smartphones 

      Konstantinidis, Andreas; Costa, Constantinos; Larkou, G.; Zeinalipour-Yazdi, Constantinos D. (2012)
      In this demonstration we present SmartLab 1, an exciting experimental testbed of approximately 40+ real Android Smartphones, plus emulated devices, deployed at the Department of Computer Science building at the University ...
    • Conference Object  

      Demonstration abstract: Sensor mockup experiments with SmartLab 

      Larkou, G.; Mintzis, M.; Taranto, S.; Konstantinidis, Andreas; Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D. (IEEE Computer Society, 2014)
      In this demonstration paper we present SmartLab1, an architecture for managing a cluster of both Android Real Devices (ARDs) and Android Virtual Devices (AVDs) via an intuitive web-based interface. Our architecture consists ...
    • Article  

      Intelligent search in social communities of smartphone users 

      Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Samaras, George S.; Chrysanthis, Panos K. (2013)
      Social communities of smartphone users have recently gained significant interest due to their wide social penetration. The applications in this domain, however, currently rely on centralized or cloud-like architectures for ...
    • Article  

      IoT Data Prefetching in Indoor Navigation SOAs 

      Konstantinidis, Andreas; Irakleous, Panagiotis; Georgiou, Zacharias; Zeinalipour-Yazti, Demetrios; Chrysanthis, Panos K. (2018)
      Internet-based Indoor Navigation Service-Oriented Architectures (IIN-SOA) organize signals collected by IoT-based devices to enable a wide range of novel applications indoors, where people spend 80--90% of their time. In ...
    • Article  

      Managing big data experiments on smartphones 

      Larkou, G.; Mintzis, M.; Andreou, Panayiotis G.; Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D. (2016)
      The explosive number of smartphones with ever growing sensing and computing capabilities have brought a paradigm shift to many traditional domains of the computing field. Re-programming smartphones and instrumenting them ...
    • Article  

      A multi-objective evolutionary algorithm for the deployment and power assignment problem in wireless sensor networks 

      Konstantinidis, Andreas; Yang, K.; Zhang, Q.; Zeinalipour-Yazdi, Constantinos D. (2010)
      A Wireless Sensor Network (WSN) design often requires the decision of optimal locations (deployment) and transmit power levels (power assignment) of the sensors to be deployed in an area of interest. Few attempts have been ...
    • Conference Object  

      Multi-objective query optimization in smartphone social networks 

      Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Samaras, George S. (2011)
      The bulk of social network applications for smart phones (e.g., Twitter, Face book, Foursquare, etc.) currently rely on centralized or cloud-like architectures in order to carry out their data sharing and searching tasks. ...
    • Article  

      Privacy-Preserving Indoor Localization on Smartphones 

      Konstantinidis, Andreas; Chatzimilioudis, Georgios; Zeinalipour-Yazdi, Constantinos D.; Mpeis, P.; Pelekis, N.; Theodoridis, Y. (2015)
      Indoor Positioning Systems (IPS) have recently received considerable attention, mainly because GPS is unavailable in indoor spaces and consumes considerable energy. On the other hand, predominant Smartphone OS localization ...
    • Conference Object  

      Privacy-preserving indoor localization on smartphones 

      Konstantinidis, Andreas; Chatzimilioudis, Georgios; Zeinalipour-Yazdi, Constantinos D.; Mpeis, P.; Pelekis, N.; Theodoridis, Y. (Institute of Electrical and Electronics Engineers Inc., 2016)
      Predominant smartphone OS localization subsystems currently rely on server-side localization processes, allowing the service provider to know the location of a user at all times. In this paper, we propose an innovative ...
    • Conference Object  

      Radio Map Prefetching for Indoor Navigation in Intermittently Connected Wi-Fi Networks 

      Konstantinidis, Andreas; Nikolaides, G.; Chatzimilioudis, Georgios; Evagorou, G.; Zeinalipour-Yazdi, Constantinos D.; Chrysanthis, Panos K. (Institute of Electrical and Electronics Engineers Inc., 2015)
      Wi-Fi (or WLAN) based indoor navigation applications for mobiles rely on cloud-based services (s) that take care of a user's (u) localization task using structures called Radio Maps (RMs). It is imperative for u to have a ...
    • Conference Object  

      Scalable Mockup Experiments on Smartphones Using Smart Lab 

      Larkou, G.; Mintzis, M.; Andreou, Panayiotis G.; Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D. (Institute of Electrical and Electronics Engineers Inc., 2015)
      In this paper we present a comprehensive architecture to carry out experimental repeatability studies on clusters of smartphones. Our architecture is founded on Smart Lab1, our in-house architecture for managing real and ...
    • Conference Object  

      SmartP2P: A multi-objective framework for finding social content in P2P smartphone networks 

      Konstantinidis, Andreas; Aplitsiotis, C.; Zeinalipour-Yazdi, Constantinos D. (2012)
      In this demonstration paper, we present a novel framework for searching objects (e.g., images, videos, etc.) captured by the users in a mobile social community. Our framework, is founded on an in-situ data storage model, ...
    • Conference Object  

      TBD-DP: Telco Big Data Visual Analytics with Data Postdiction 

      Costa, Constantinos; Charalampous, Andreas; Konstantinidis, Andreas; Zeinalipour-Yazti, Demetrios; Mokbel, Mohamed F. (2018)
      In this demonstration paper, we present the TBD-DP operator, which relies on existing Machine Learning (ML) algorithms to abstract Telco Big Data (TBD) into compact models that can be stored and queried when necessary. Our ...
    • Conference Object  

      Towards planet-scale localization on smartphones with a partial radiomap 

      Konstantinidis, Andreas; Chatzimilioudis, Georgios; Laoudias, Christos; Nicolaou, Silouanos; Zeinalipour-Yazdi, Constantinos D. (2012)
      The majority of smartphone localization systems use Assisted-GPS for fine-grained localization in outdoor spaces or WiFi-based RSS (Received Signal Strength) technologies for coarse-grain positioning in indoor and outdoor ...
    • Conference Object  

      Towards user-centric social networks 

      Andreou, Panayiotis G.; Germanakos, Panagiotis; Konstantinidis, Andreas; Georgiadis, Dimosthenis; Belk, Marios; Samaras, George S. (2012)
      Social network portals, such as Facebook and Twitter, often discover and deliver relevant social data to a user's query, considering only system-oriented conflicting objectives (e.g., time, energy, recall) and frequently ...