Now showing items 1-20 of 23

    • Autonomous fault detection in self-healing systems : comparing Hidden Markov Models and artificial neural networks 

      Schneider, Christopher; Barker, Adam David; Dobson, Simon Andrew (ACM, 2014-01-22) - Conference item
      Autonomously detecting and recovering from faults is one approach for reducing the operational complexity and costs associated with managing computing environments. We present a novel methodology for autonomously generating ...
    • Autonomous fault detection in self-healing systems using Restricted Boltzmann Machines 

      Schneider, Christopher; Barker, Adam David; Dobson, Simon Andrew (2014-09-24) - Conference item
      Autonomously detecting and recovering from faults is one approach for reducing the operational complexity and costs associated with managing computing environments. We present a novel methodology for autonomously generating ...
    • Critical tipping point distinguishing two types of transitions in modular network structures 

      Shai, Saray; Kennett, Dror; Kennett, Yoed; Faust, Miriam; Dobson, Simon Andrew; Havlin, Shlomo (2015-12-02) - Journal article
      Modularity is a key organizing principle in real-world large-scale complex networks. The relatively sparse interactions between modules are critical to the functionality of the system and are often the first to fail. We ...
    • Data collection with in-network fault detection based on spatial correlation 

      Fang, Lei; Dobson, Simon Andrew (2014-09-08) - Conference item
      Environmental sensing exposes sensor nodes to environmental stresses that can lead to various kinds of sampling failure. Recognising such faults in the network can improve data reliability therefore making sensor networks ...
    • Developing pervasive multiagent systems with nature-inspired co-ordination 

      Zambonelli, Franco; Omicini, Andrea; Anzengruber, Bernhard; Castelli, Gabriella; DeAngelis, Francesco; di Marzo Serugendo, Giovanan; Dobson, Simon Andrew; Fernandez Marquez, Jose-Luis; Ferscha, Alois; Mamei, Marco; Mariani, Stefano; Molesini, Ambra; Montagna, Sara; Nieminen, Jussi; Pianini, Danilo; Rosi, Alberto; Stevenson, Graeme Turnbull; Viroli, Mirko; Ye, Juan (2015-02) - Journal article
      Pervasive computing systems can be modelled effectively as populations of interacting autonomous components. The key challenge to realizing such models is in getting separately-specified and -developed sub-systems to ...
    • Discovery and recognition of emerging human activities using a hierarchical mixture of directional statistical models 

      Fang, Lei; Ye, Juan; Dobson, Simon Andrew (2019-03-15) - Journal article
      Human activity recognition plays a significant role in enabling pervasive applications as it abstracts low-level noisy sensor data into high-level human activities, which applications can respond to. With more and more ...
    • Energy-efficient sensing in wireless sensor networks using compressed sensing 

      Razzaque, Mohammad Abdur; Dobson, Simon Andrew (2014-02-12) - Journal article
      Sensing of the application environment is the main purpose of a wireless sensor network. Most existing energy management strategies and compression techniques assume that the sensing operation consumes significantly less ...
    • Evaluating unsupervised fault detection in self-healing systems using stochastic primitives 

      Schneider, Christopher; Barker, Adam David; Dobson, Simon Andrew (2015-01-28) - Journal article
      Autonomous fault detection represents one approach for reducing operational costs in large-scale computing environments. However, little empirical evidence exists regarding the implementation or comparison of such ...
    • From missions to systems : generating transparently distributable programs for sensor-oriented systems 

      Porter, Barry; Dearle, Alan; Dobson, Simon Andrew (ACM, 2012-12-04) - Conference item
      Early Wireless Sensor Networks aimed simply to collect as much data as possible for as long as possible. While this remains true in selected cases, the majority of future sensor network applications will demand much more ...
    • KCAR : a knowledge-driven approach for concurrent activity recognition 

      Ye, Juan; Stevenson, Graeme Turnbull; Dobson, Simon Andrew (2015-05) - Journal article
      Recognising human activities from sensors embedded in an environment or worn on bodies is an important and challenging research topic in pervasive computing. Existing work on activity recognition is mainly concerned with ...
    • LOC8 : A location model and extensible framework for programming with location 

      Stevenson, Graeme Turnbull; Ye, Juan; Dobson, Simon Andrew; Nixon, Paddy (2010) - Journal article
      Location is a core concept in most pervasive systems-and one that's surprisingly hard to deal with flexibly. Using a location model supporting a range of expressive representations for spaces, spatial relationships, and ...
    • Multiplex networks in metropolitan areas : generic features and local effects 

      Strano, Emanuele; Shai, Saray; Dobson, Simon Andrew; Barthélemy, Marc (2015-10) - Journal article
      Most large cities are spanned by more than one transportation system. These different modes of transport have usually been studied separately: it is however important to understand the impact on urban systems of the coupling ...
    • Open Badges : a best-practice framework 

      Voogt, Lennert; Dow, Lisa; Dobson, Simon Andrew (IEEE, 2016-07-13) - Conference item
      The widespread adoption of online education is severely challenged by issues of verifiability, reliability, security and credibility. Open Badges exist to address these challenges, but there is no consensus as to what ...
    • A reference architecture and model for sensor data warehousing 

      Dobson, Simon Andrew; Golfarelli, Matteo; Graziani, Simone; Rizzi, Stefano (2018-09-15) - Journal article
      Sensor data is becoming far more available thanks to the growth in both sensor systems and Internet of Things devices. Much of the value of sensor data comes from examining trends that occur over long timescales, ranging ...
    • A relation based measure of semantic similarity for Gene Ontology annotations 

      Sheehan, Brendan; Quigley, Aaron John; Gaudin, Benoit; Dobson, Simon Andrew (2008-11-04) - Journal article
      Background: Various measures of semantic similarity of terms in bio-ontologies such as the Gene Ontology (GO) have been used to compare gene products. Such measures of similarity have been used to annotate uncharacterized ...
    • Self-management of self-organising mobile computing applications : a separation of concerns approach 

      Fernandez Marquez, Jose Luis; di Marzo Serugendo, Giovanna; Stevenson, Graeme Turnbull; Ye, Juan; Dobson, Simon Andrew; Zamonelli, Franco (ACM, 2014-03-24) - Conference item
      Although the research area of self-organising systems is well established, their construction is often ad hoc. Consequently, such software is difficult reuse across applications that require similar functionality of have ...
    • Self-stabilising target counting in wireless sensor networks using Euler integration 

      Pianini, Danilo; Dobson, Simon Andrew; Viroli, Mirko (IEEE Computer Society, 2017-10-12) - Conference item
      Target counting is an established challenge for sensor networks: given a set of sensors that can count (but not identify) targets, how many targets are there? The problem is complicated because of the need to disambiguate ...
    • Semantic web technologies in pervasive computing : a survey and research roadmap 

      Ye, Juan; Dasiopoulou, Stamatia; Stevenson, Graeme Turnbull; Meditskos, Georgios; Kontopoulos, Efstratios; Kompatsiaris, Ioannis; Dobson, Simon Andrew (2015-10) - Journal article
      Pervasive and sensor-driven systems are by nature open and extensible, both in terms of input and tasks they are required to perform. Data streams coming from sensors are inherently noisy, imprecise and inaccurate, with ...
    • Spatial awareness in pervasive ecosystems 

      Dobson, Simon Andrew; Viroli, Mirko; Fernandez-Marquez, Jose-Luis; Zambonelli, Franco; Stevenson, Graeme Turnbull; di Marzo Serugendo, Giovanna; Montagna, Sara; Pianini, Danilo; Ye, Juan; Castelli, Gabriella; Rosi, Alberto (2016-12-07) - Journal article
      Pervasive systems are intended to make use of services and components that they encounter in their environment. Such systems are naturally spatial in that they can only be understood in terms of the ways in which components ...
    • A spatially heterogeneous network-based metapopulation software model applied to the simulation of a pulmonary tuberculosis infection 

      Pitcher, Michael John; Bowness, Ruth; Dobson, Simon Andrew; Gillespie, Stephen Henry (2018-08-23) - Journal article
      Tuberculosis (TB) is an ancient disease that, although curable, still accounts for over 1 million deaths worldwide. Shortening treatment time is an important area of research but is hampered by the lack of models that mimic ...