Group leader: Laurent Viennot

Web site: GANG

Research interests

Joined Inria team with IRIF (Distributed algorithms and graphs team, UMR 8243, Paris Diderot University and CNRS).

GANG focuses on algorithm design for large scale networks using structural properties of these networks. Application domains include the development of optimized protocols for large dynamic networks such as mobile networks or overlay networks over Internet. This includes for instance peer-to-peer applications, or the navigability of social networks. GANG tools come from recent advances in the field of graph algorithms, both in centralized and distributed settings. In particular, this includes graph decomposition and geometric properties (such as low doubling dimension, low dimension embedding, etc.).

Today, the management of large networks, Internet being the reference, is best effort. However, the demand for mobility (ad hoc networks, wireless connectivity, etc.) and for dynamicity (node churn, fault tolerance, etc.) is increasing. In this distributed setting, it becomes necessary to design a new generation of algorithms and protocols to face the challenge of large scale mobility and dynamicity.

In the mean time, recent and sophisticated theoretical results have emerged, offering interesting new tracks for managing large networks. These results concern centralized and decentralized algorithms for solving key problems in communication networks, including routing, but also information retrieval, localization, or load balancing. They are mainly based on structural properties observed in most of real networks: approximate topology with low dimension metric spaces, low treewidth, low doubling dimension, graph minor freeness, etc. In addition, graph decomposition techniques have recently progressed. The scientific community has now tools for optimizing network management. First striking results include designing overlay networks for peer-to-peer systems and understanding the navigability of large social networks.


Boufkhad Yacine 01 57 27 94 05 4011 Maître.sse de conférence Mail
Charbit Pierre 0157279224 4030 Maître.sse de conférence Mail
Collet Simon 4001 Doctorant.e Mail
Delporte Carole 01 57 27 92 25 4006 Professeur.e Mail
Feuilloley Laurent 4001 Doctorant.e Mail
Fraigniaud Pierre 01 57 27 92 60 4016 Directeur.rice de recherche - CNRS Mail
Habib Michel 01 57 27 92 47 4020 Professeur.e Mail
Korman Amos 01 57 27 94 06 4028 Chargé.e de recherche Mail
Kosowski Adrian 4011 Chargé.e de recherche Mail
Viennot Laurent 01 57 27 94 00 4005 Directeur.rice de recherche Mail
de Montgolfier Fabien 01 57 27 92 32 4018 Maître.sse de conférence Mail