eX Modelo

23-28 June, 2019 Châtenay-sur-Seine, France Apply


Models and simulations

The use of simulation models has widely spread in recent years, in various fields of academic research. Models are being developed to represent and try to better understand all kinds of systems: population dynamics, epidemics, transportation systems, macro-scale systems, micro-scale systems, etc. In some scientific areas, models and in silico simulations have become essential to help study in vivo situations.

However, simulation models are necessarily a simplification of reality, and hypotheses have to be made when developing a model. Thus every model can (and needs to?) be questioned: Is it relevant to tackle the research question behind it? How to extract significant knowledge from the model? What kind of dynamics can it exhibit? How does each mechanism of the model impact those dynamics? Is every mechanism really necessary? These are just some of the many questions a model developer has to answer in order to really know and understand his/her model!

The eX Modelo school

During this week, you will learn a step by step model exploration methodology, including innovative sensitivity analysis, calibration, and validation techniques. This school will be organized around a strong theoretical component, various individual and group practical sessions, challenges, and moments to share about modelling practices. You will be invited to apply those techniques as we go, on a case study model adapted just for you! Invited speakers will also be presenting actual applications of these techniques in various fields of study (ecology, geography, epidemiology...), and time slots will be open in the programme for you to apply what you learned on your own model (if you have one, not mandatory at all!), with our help if necessary.

All the techniques you will learn during the school will be implemented through the OpenMOLE platform, which has been developed as an open source software at the Complex Systems Institute in Paris since 2008.

The eX Modelo school is meant to be interdisciplinary, so whatever your field of study is, as long as there is some modelling or simulation involved, you belong in this school!

Programme (Provisional)

7pm Beginning Arrival at La Pépinière
8pm Introduction
9am Presentation of the week material Introduction to the OpenMOLE platform and practice. Introduction to the case study model used during the week.
12:30pm Break Lunch
2pm About model stochasticity How to explore simple deterministic or stochastic models? How to carry out simple design of experiments with direct samplings in OpenMOLE? Application on the case study model dynamics.
7:30pm Break Dinner
9pm Evening session #1 A practical model exploration success story (20 min) + Participants modelling stories (5 x 5 min) + discussions.
9am Calibration How to calibrate a model? How to achieve this in OpenMOLE? Application on the case study model.
12:30pm Break Lunch
2pm Calibration profile Questionning validity ranges of input parameters through the calibration profile method. Application on the case study model input parameters.
7:30pm Break Dinner
9pm Evening session #2 A practical model exploration success story (20 min) + Participants modelling stories (5 x 5 min) + discussions.
9am Dynamic diversity exploration How to assess the diversity of the model's dynamics? How to explore this efficiently? Application with the PSE algorithm in group on the case study model.
12:30pm Break Lunch
2pm Free ride session A free time to go back on previous days concepts on the case study model, or application on personal models.
6pm Evening session #3 A practical model exploration success story (20 min) + Participants modelling stories (5 x 5 min) + discussions.
7:30pm Break Dinner
9am Challenge day A concrete problem to solve in autonomy, covering all methods exposed during the previous days.
12:30pm Break Lunch
2pm Challenge day Work in group on the challenge.
7:30pm Break Dinner
9am Challenge restitution Restitution by group.
11:30am Closing session.
12:30pm Break Lunch
2pm End Departure


  • Romain Reuillon

    Romain Reuillon

    UMR Géographie-cité (CNRS) / Institut des Systèmes Complexes (CNRS)

    After my PhD, which focused on the distribution of stochastic simulation computation, I founded the OpenMOLE platform in 2008. Since then, I have orchestrated its development, participated in modelling work and supported researchers and doctoral students in their methodological questions on the evaluation of simulation models.

  • Mathieu Leclaire

    Mathieu Leclaire

    Institut des Systèmes Complexes (CNRS)/UMR Géographie-cité (CNRS)

    Arriving at the Institute of Complex Systems in 2008, I moved very early to the platform, whose development was only just beginning and which was not yet called OpenMOLE. Since then, I have been actively contributing to its development and to its community.

  • Jonathan Passerat-Palmbach

    Jonathan Passerat-Palmbach @jopasserat

    Imperial College London (UK)

    My OpenMOLE adventure begins in 2010, in the basement of the ISC, during the infamous World Cup.... I started to contribute to the support of distributed computing environments shortly afterwards, within the GridScale project. I like to add the latest software engineering gadgets to the development cycle. I am pleased to lead the new contributors on their journey to the deepest depths of the platform....

  • Etienne DELAY

    Etienne DELAY @ElCep

    CIRAD (Centre de coopération Internationale en Recherche Agronomique pour le Développement) - UR GREEN

    To tackle the scientific challenges proposed by landscape dynamics and cooperation processes, I have developed a research methodology based on field work and companion modelling combined with the formalisation of the observed processes and agents based models. This approach offers the possibility to understand : spatial, social, cultural and / or economic conditions that take place on territories, and to provide prospective scenarios. Today, as a researcher at CIRAD, I am pursuing my research in two areas: modelling the emergence of cooperation and Companion Modelling approach, seeking to integrate it ever earlier into the co-construction process of model exploration approaches.

  • and also: Paul Chapron, Juste Raimbault, Hélène Arduin, Guillaume Chérel, Sébastien Rey-Coyrehourcq, Julien Perret, François Lavallée


La Pépinière, Châtenay-sur-Seine (77 - France)

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By train: Line R from Paris Gare de Lyon to Montereau-Fault-Yonne (1h) + Taxi (15 min)
Groups will be organised to share taxi rides.


The number of participants to the school being limited, we will ask everyone interested to fill in this short application form application.odt.

Application procedure

- Fill in the application form
- Prepare a short Resumé
- Send both documents by email to school AT exmodelo DOT org before the 30th November, 2018

Important dates

Application deadline 30th November, 2018
Extended deadline 12th December, 2018
Acceptance notification 14th December, 2018
Payement 14th December 2018 - 18th January 2019


The fees for the eX Modelo school include full board from Sunday night to Friday afternoon at La Pépinière. The transportation is not included. The payement options will be Credit Card or "CNRS bon de commande". The online payement instructions will be exposed later to the selected participants.

- academic: 800€* (reduced for PhD students and MSc: 600€*)
- industry: 1200€*

* price excluding VAT: 20%


You can contact us via email at school AT exmodelo DOT org.