ROAR-NET Problem Modelling Code Fest

Online

9-11 September 2025

About the Code Fest

The ROAR-NET Problem Modelling Code Fest is a 48-hour online coding event running from 18:00 CEST (UTC+2, Brussels) on 9 September 2025 to 18:00 CEST on 11 September 2025. It will also be held locally at physical hubs organised by volunteers around the world, with the schedule taking the relevant time zones into account.

Participants in the Code Fest will learn how to use the ROAR-NET API to develop computational models of combinatorial optimisation problems in a solver-agnostic way. They will also have the opportunity to get involved in the ROAR-NET community and contribute to the ongoing development of the API, associated methodology, and supporting tools, by making open-source/open-access code and non-code contributions to the ROAR-NET repositories.

Programme highlights:

• Kick-start presentations on optimisation, problem modelling, the ROAR-NET API Specification and its implementation in Python
• Live-coding modelling tutorials
• Q&A sessions
• A Training Track, consisting of a sequence of modelling challenges to be completed using the ROAR-NET API by teams of 1-4 participants
• A Development Track, consisting of problem-statement development, model implementation, benchmark-instance construction, and software-tool development activities, to be proposed and carried out by teams of any size
• Badges awarded to teams for concrete achievements
• Achievement board updated throughout the event

Coding will be done mainly in Python. The language of the event is English. All participants will receive a certificate of participation including their team name and the achievement badges they earned.

Participation

See the Call for Participation for how to apply to participate as a team or to organise a hub.

Confirmed Hubs

Brazil

• Federal University of Ouro Preto
  • Organiser: Pablo Munhoz

Croatia

• University of Zagreb, Faculty of Electrical Engineering and Computing
  • Organiser: Domagoj Jakobović

Czechia

• Brno University of Technology, Faculty of Information Technology
  • Organiser: David Sedlák

Denmark

• University of Southern Denmark
  • Organiser: Marco Chiarandini

Germany

• University of Augsburg
  • Organiser: Michael Heider

Italy

• University of Udine
  • Organiser: Luca Di Gaspero

Japan

• Shinshu University
  • Organiser: Hernán Aguirre

Luxembourg

• Luxembourg Institute of Science and Technology
  • Organiser: Wassila Mtalaa

Portugal

• University of Coimbra
  • Organiser: Gonçalo Lopes
• University of Lisbon
  • Organiser: Pedro M. Ferreira

Slovenia

• Jožef Stefan Institute
  • Organiser: Tome Eftimov

Spain

• Universidad de La Laguna
  • Organiser: Gara Miranda

Türkiye

• Izmir Institute of Technology
  • Organiser: Işıl Öz

Organisers

• Farhan Aadil, Sivas University of Science and Technology, TR
• Marco Chiarandini, University of Southern Denmark, DK
• Luca Di Gaspero, University of Udine, IT
• Marko Đurasević, University of Zagreb, HR
• Alcides Fonseca, University of Lisbon, PT
• Carlos M. Fonseca, University of Coimbra, PT
• Sandra Greiner, University of Southern Denmark, DK
• Andreia P. Guerreiro, INESC-ID, PT
• Michael Hellwig, Vorarlberg University of Applied Sciences, AT
• Alexandre Jesus, A.P. Moller - Maersk, PT
• Özlem Karsu, Bilkent University, TR
• Jakub Kowalski, University of Wrocław, PL
• Pablo Munhoz, Federal University of Ouro Preto, BR
• Işıl Öz, Izmir Institute of Technology, TR
• Luis Paquete, University of Coimbra, PT
• Andrea Schaerf, University of Udine, IT