November 9, 2016

Collaborative Distributed Systems

Dramatic advances in digital networks have broken the client/server imperium and have paved the way to complex collaborative distributed systems (e.g., clouds, peer to peer applications, cyber-physical systems, social mobile applications such as crowd sensing, Internet of Things – IoT, industrial systems 4.0, etc.) However, by nature, these systems suffer from operational disruptions, faults, malicious behaviours and attacks. That is why the third pillar of the research agenda will be dedicated to the enhancement of the resilience of collaborative distributed systems.

Research works on this topic are listed below:

  • A semi-automatic framework for selfishness-aware design of peer-to-peer systems

We aim at facilitating the work of system designers in dealing with selfishness in P2P, namely to evaluate and reduce the impact of selfish behaviours on the system functionalities and performance. To this end, we provide general methodologies, along with their software implementations for supporting the semi-automatic design and evaluation of P2P systems deployed over a network of selfish nodes. Also, we present a classification framework and a descriptive language for describing motivations and executions of selfish behaviours in cooperative distributed systems.

Franco-Italian PhD thesis of Guido Lena Cota, supervised by Prof. Ernesto Damiani and Prof. Lionel Brunie, co-supervised by Dr. Sonia Ben Mokhtar and Dr. Gabriele Gianini.

  • Efficient Quality Control in Crowdsourcing

Keywords: Crowdsourcing, Quality control, Machine learning, Worker selection

Franco-German PhD thesis of Tarek Awwad, supervised by Prof. Harald Kosch and Prof. Lionel Brunie, co-supervised by Dr. Nadia Bennani, Dr. Veronika Sonigo and Dr. Konstantin Ziegler.

  • Standardized Semantic Web Technologies for the Web of Things

Keywords: WoT, Semantic Web, Query processing, Constrained Node Networks

PhD thesis of Victor Charpenay, supervised by Prof. Harald Kosch in collaboration with Siemens AG.

  • A pervasive navigation system on Smartphones

Franco-Tunisian PhD thesis of Wiem Fekih Hassen, supervised by Prof. Lionel Brunie and Prof. Yahya Slimani.

  • Achieving collaboration in distributed systems deployed over selfish nodes

The research work enables to attain a targeted level of collaboration of distributed systems deployed over rational selfish nodes, which have interest in deviating from the collaborative protocol to increase a personal benefit. The work models this complex and interdependent setup by means of Game Theory (GT) using a specific class known as Inspection Games (IG). It enables to model the nodes’ behaviour and, based on the monitored behaviour, adjust system parameters correspondingly to attain the desired collaboration value. The IG approach is designed as generic framework and can be applied to any architecture considering any selfish goal and any reliability technique.

Keywords: Reliability, Availability and security, Network management, Modelling of distributed systems, Game Theory, Inspection Games

Franco-German PhD thesis of Tobias Mayer, supervised by Prof. Harald Kosch and Prof. Lionel Brunie.

Duration: 2009-2013

Award of Excellence (category: science)

Thesis available online >>