Browsing by Author "Chrysanthis, Panos K."

Now showing items 21-32 of 32

    • Conference Object  

      MINT views: Materialized In-Network Top-k views in sensor networks 

      Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Chrysanthis, Panos K.; Samaras, George S. (2007)
      In this paper we introduce MINT (Materialized In-Network Top-k) Views, a novel framework for optimizing the execution of continuous monitoring queries in sensor networks. A typical materialized view V maintains the complete ...
    • Article  

      A network-aware framework for energy-efficient data acquisition in wireless sensor networks 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Samaras, George S.; Chrysanthis, Panos K. (2014)
      Wireless sensor networks enable users to monitor the physical world at an extremely high fidelity. In order to collect the data generated by these tiny-scale devices, the data management community has proposed the utilization ...
    • Article  

      Optimized query routing trees for wireless sensor networks 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Pamboris, Andreas; Chrysanthis, Panos K.; Samaras, George S. (2011)
      In order to process continuous queries over Wireless Sensor Networks (WSNs), sensors are typically organized in a Query Routing Tree (denoted as T) that provides each sensor with a path over which query results can be ...
    • Article  

      Performance vs. freshness in web database applications 

      Papastavrou, Stavros; Chrysanthis, Panos K.; Samaras, George S. (2014)
      In this work, we present a novel approach for the efficient materialization of dynamic web pages in e-commerce applications such as an online retail store with millions of items, hundreds of HTTP requests per second and ...
    • Conference Object  

      Perimeter-based data replication in mobile sensor networks 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Andreou, Maria I.; Chrysanthis, Panos K.; Samaras, George S. (2009)
      This paper assumes a set of n mobile sensors that move in the Euclidean plane as a swarm. Our objectives are to explore a given geographic region by detecting spatio-temporal events of interest and to store these events ...
    • Article  

      Power efficiency through tuple ranking in wireless sensor network monitoring 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Chrysanthis, Panos K.; Samaras, George S. (2011)
      In this paper, we present an innovative framework for efficiently monitoring Wireless Sensor Networks (WSNs). Our framework, coined KSpot, utilizes a novel top-k query processing algorithm we developed, in conjunction with ...
    • 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  

      SenseSwarm: A perimeter-based data acquisition framework for mobile sensor networks 

      Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Chrysanthis, Panos K.; Samaras, George S. (2007)
      This paper assumes a set of n mobile sensors that move in the Euclidean plane as a swarm. Our objectives are to explore a given geographic region by detecting and aggregating spatio-temporal events of interest and to store ...
    • Conference Object  

      Survey on the Java-based approaches for web database connectivity 

      Papastavrou, Stavros; Chrysanthis, Panos K.; Samaras, George S.; Pitoura, Evaggelia 1967- (IEEE, 2000)
      The undeniable popularity of the web makes the efficient accessing of distributed databases from web clients an important topic. Various methods for web database integration have been proposed but recently there is an ...
    • Article  

      Two-phase commit processing with restructured commit tree 

      Samaras, George S.; Kyrou, G. K.; Chrysanthis, Panos K. (2003)
      Extensive research has been carried out in search for an efficient atomic commit protocol and many optimizations have been suggested to improve the basic two-phase commit protocol, either for the normal or failure case. ...
    • Conference Object  

      ViSMA: Extendible, mobile-agent based services for the materialization and maintenance of personalized and shareable Web views 

      Samaras, George S.; Karenos, K.; Chrysanthis, Panos K.; Pitoura, Evaggelia 1967- (Institute of Electrical and Electronics Engineers Inc., 2003)
      ViSMA (Views Supported by Mobile Agents) is a prototype set of extendible mobile-agent based services that allow the definition, materialization, maintenance and sharing of views created over remote Web-accessible databases. ...
    • Conference Object  

      Workload-aware query routing trees in wireless sensor networks 

      Andreou, Panayiotis G.; Zeinalipour-Yazdi, Constantinos D.; Chrysanthis, Panos K.; Samaras, George S. (2008)
      Continuous queries in wireless sensor networks are established on the premise of a routing tree that provides each sensor with a path over which answers can be transmitted to the query processor. We found that these ...