Grant recipient of the call for proposal DIM 2011 - Région Paris Ile-de-France

Elisa Omodei

« Modélisation des dynamiques socio-cognitives dans les communautés numériques »


Institut des Systèmes Complexes - Paris Ile-de-France
57-59 rue Lhomond
75005 Paris

Affiliation (hors ISC-PIF) : UMR 8094 LATTICE (CNRS/ENS/Université Paris 3/ILF/ISCC)

Supervisors : Thierry Poibeau, Jean-Philippe Cointet

Keywords : social and epistemic networks, dynamics of and on complex networks, community detection in networks, information diffusion, text mining, knowledge communities, digital humanities, cultural dynamics, language evolution models


The goal of my PhD thesis is the modeling of the intertwined evolution of social and knowledge systems. My research is based on empirical analysis encompassing various communities: academic research communities (scientists producing knowledge and collaborating), political bloggers diffusing quoted texts, twitter users reacting to the Fukushima nuclear disaster. I examine these data sets by trying to characterize the dynamics of ideas through a linguistics analysis, based on NLP techniques, of the texts produced by the individuals forming these communities. On the other hand I as well use complex systems methods in order to investigate the dynamics of the communities, through an analysis of the underlying social network. My main goal is to understand how in a system the social structure and the knowledge distribution mutually influence each other over time leading to the emergence of new knowledge and to the evolution of social aggregates. Beside this “data-driven” research, I am also interested and involved in more conceptual projects including the modeling of the emergence and dynamics of communities and the modeling of language evolution.


  • June 2013: SFI Complex Systems Summer School
  • 2011 - Present: PhD Student at the École Normale Supérieure
  • 2009 – 2011: MSc. in Physics, curriculum Complex Systems, University of Bologna, Italy, with a thesis on « Pedestrian Dynamics on the Venice Network: Measures, Statistics and Theory »
  • 2006 – 2009: BSc. in Physics, University of Padova, Italy


  • David Darmon, Elisa Omodei and Joshua Garland, "Followers Are Not Enough: Beyond Structural Communities in Online Social Networks", arXiv:1404.0300
  • Elisa Omodei, Thierry Poibeau, Jean-Philippe Cointet, "Reconstructing the Semantic Landscape of Natural Language Processing", Proceedings of the 9th edition of the Language Resources and Evaluation Conference, 26-31 May, 2014, Reykjavik, IS
  • Elisa Omodei, Yufan Guo, Jean-Philippe Cointet and Thierry Poibeau, "Social and Semantic Diversity: Socio-semantic Representation of a Scientific Corpus", Proceedings of the EACL 2014 workshop on "Language Technology for Cultural Heritage, Social Sciences, and Humanities", April 26th, 2014, Gothenburg, SWE
  • Manlio De Domenico, Albert Solé-Ribalta, Elisa Omodei, Sergio Gómez and Alex Arenas, "Centrality in Interconnected Multilayer Networks", arXiv:1311.2906
  • Elisa Omodei, Thierry Poibeau and Jean-Philippe Cointet, "A symmetric approach to understand the dynamics of scientific collaborations and knowledge production", Proceedings of the 4th French Conf. on "Modèle & Analyse de réseaux : Approches mathématique & informatiques (MARAMI 2013)", 2013
  • D. Darmon, E. Omodei, C. Flores, L. F. Seoane, K. Stadler, J. Wright, J. Garland and N. Barnett, "Detecting Communities Using Information Flow in Social Networks", 2013 SFI Complex Systems Summer School Proceedings
  • D. Masad, E. Omodei, C. Strohecker, Y. Xu, J. Garland, M. Zhang and L. F. Seoane, “Unfolding History: Classification and Analysis of Written History as a Complex System, 2013 SFI Complex Systems Summer School Proceedings
  • Elisa Omodei, Thierry Poibeau and Jean-Philippe Cointet, "Multi-Level Modeling of Quotation Families Morphogenesis", Proceedings of the 2012 ASE/IEEE International Conference on Social Computing, 2012
  • Elisa Omodei, Armando Bazzani, Sandro Rambaldi, Paolo Michieletto and Bruno Giorgini, "The physics of the city: pedestrians dynamics and crowding panic equation in Venezia", Quality & Quantity, 2012

Invited Talks

  • "Analysis and modeling of the socio-epistemic dynamics of scientific communities", Laboratoire LIP6, Université Pierre et Marie Curie - Paris 6 (UPMC), 6 February 2014, Paris, FR
  • “Understanding the Dynamics of Scientific Collaborations and Knowledge Production”, ICREA-Complex Systems Lab, Universitat Pompeu Fabra, 13 September 2013, Barcelona, ES
  • “Case, Prepositions and In-Betweens: Sketching a Model of Grammatical Evolution”, with B. Fagard, Workshop on Cognitive Mechanisms and Cultural Processes in Evolutionary Linguistics organized by the Sony Computer Science Laboratory, 28-29 November 2012, Paris, FR
  • “The Physics of the City. Complexity in Urban Mobility Networks from Venezia to Marseille”, with B. Giorgini, Workshop organized by The Aix-Marseille Institute for Advanced Study (IMeRA), 6 September 2011, Marseille, FR

Contributed Talks

  • E. Omodei, T. Poibeau and J.-P. Cointet, “The Socio-Epistemic Dynamics of Scientific Research”, European Conference on Complex Systems “ECCS 2013”, 16-20 September 2013, Barcelona, ES
  • E. Omodei and B. Fagard, “Cases, Prepositions, and In-Betweens: Sketching a Model of Grammatical Evolution”, European Conference on Complex Systems “ECCS 2013”, 16-20 September 2013, Barcelona, ES
  • E. Omodei, D. Darmon, C. Flores, L. Seoane, K. Stadler, J. Wright, J. Garland, and N. Barnett, “Detecting Communities Using Information Flow in Social Networks”, YRNCS Satellite, European Conference on Complex Systems “ECCS 2013”, 15 September 2013, Barcelona, ES
  • E. Omodei, T. Poibeau, A. Kobayashi, J.-P. Cointet, S. Doan, B. Ho Vo and N. Collier, “Automatic analysis of Twitter messages written after the Fukushima disaster”, Conference on Nuclear Power and Social Sciences after Fukishima organized by the French National Research Center (CNRS), 7 December 2012, Paris, FR


  • “Knowledge Modelling and Information Extraction”, Master in Multi-language Engineering at the Institut National des Langues et Civilisations Orientales (INaLCO), Paris, FR (Spring 2013)


Elisa Omodei: elisa(dot)omodei(at)iscpif(dot)fr

Contributors to this page: Elisa Omodei , Marlene-Etienne and David Chavalarias .
Page last modified on Friday 04 April, 2014 10:09:00 by Elisa Omodei.