- ENOG - Euro

Winter School NETOPT January 2027
by Luis Eduardo Neves Gouveia 10 Jul '26

10 Jul '26

The 13th edition of the Winter School will take place at the Hotel Londres (https://www.hotelondres.com/en/) , Estoril, from the 17th to the 22th of January of 2027. In the spirit of the previous editions, the main objective of the school is to provide an opportunity for PhD students to get together and attend high level courses in the field of Network Optimization. In this edition of the school, the lecturers and subjects to be addressed are: Claudia Archetti ( University of Brescia) - Efficient exact and heuristic algorithms for the Inventory Routing Tolga Bektaş (University of Liverpool) -Compact formulations, projections and some polyhedral results for the vehicle routing problem Christina Büsing (Aachen University) - Dealing with uncertainty: robustness in combinatorial optimization Markus Leitner (VU Amsterdam) - Routing with temporal dependencies Martin Schmidt (Trier University) - Theory and Algorithms for Linear and Mixed-Integer Bilevel Optimization The school is part of the activities of the ENOG (European Network Optimization Group). Potential participants will be invited to submit their CVs to the address netopt(a)ciencias.ulisboa.pt no later than October 31. Further information will be available in the webpage https://netopt2027.campus.ciencias.ulisboa.pt

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INOC 2026 - Networks special issue
by Bernard Fortz 30 Jun '26

30 Jun '26

Following the INOC 2026 conference in HEC Liège, Management School of Liège University, the European Network Optimisation Group (ENOG) invites members of the network optimisation community to submit their full papers for consideration in a special issue of the Networks journal published by Wiley. Full paper versions of extended abstracts presented at INOC 2026 are welcome, as are papers from the wider networks optimisation community. Note, submissions must be substantially different to full papers published in the INOC 2026 post conference proceedings, the paper must include a valuable contribution beyond that in the INOC 2026 conference paper. Submitted papers must be original, unpublished and not currently under consideration for publication elsewhere. All papers will undergo the standard peer review procedures at Networks and will be published online as soon as they are accepted. Topics for the conference include but are not restricted to: - Network Optimization - Areas of Mathematical Optimization - Operations Research - Graph Theory - Application-oriented network optimization from areas like Telecommunications, Routing, Smart Grids, and Logistics are most welcome Guest Editors ============= - Bernard Fortz, HEC Liège, Management School of Liège University, bernard.fortz(a)uliege.be - Luis Gouveia, University of Lisbon, Portugal, legouveia(a)ciencias.ulisboa.pt Submission Guidelines/Instructions ================================== Please refer to the Author Guidelines https://onlinelibrary.wiley.com/page/journal/10970037/homepage/forauthors.h… to prepare your manuscript. When submitting your manuscript, please select “Special Issue Article” as manuscript type.

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Recent Advances in Location and Routing Workshop, WU Vienna, October 30, 2026
by Ivana Ljubic 17 Jun '26

17 Jun '26

Dear colleagues, Join us for the workshop "Recent Advances in Location and Routing", bringing together leading researchers in operations research, optimization and logistics, to discuss the latest developments in facility location, network design, vehicle routing, and integrated decision-making under uncertainty. The workshop will highlight emerging methodologies, data-driven approaches, and real-world applications shaping the future of transportation and supply chain systems. The program features a keynote lecture by Elena Fernández, University of Cadiz, and aims to foster exchange between researchers and practitioners working on cutting-edge challenges in location analysis and routing optimization. The workshop will be held on October 30, 2026 at the campus of WU Wien, Vienna, Austria Due to space constraints, registrations by non-presenting attendees will be treated on a first come first serve basis. You can register here: https://www.wu.ac.at/en/statmath/events/recent-advances-in-location-and-rou… Keynote speaker: Elena Fernandez, University of Cádiz, Spain Invited speakers: Claudia Archetti, University of Brescia, Italy Martina Cerulli, University of Salerno, Italy Yolanda Hinojosa, University of Seville, Spain Martine Labbé, Université libre de Bruxelles, Belgium Markus Leitner, Vrije Universiteit Amsterdam, Netherlands Alfredo Marin, University of Murcia, Spain Stefan Nickel, Karlsruhe Institute of Technology, Germany Justo Puerto, University of Seville, Spain Jessica Rodríguez-Pereira, Universitat Politècnica de Catalunya, Spain Francisco Saldanha da Gama, Sheffield University, UK Organizer: Ivana Ljubic, WU Wien.

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[jsalmero@nps.edu: Networks special issue: could you post or distribute?]
by Bernard Fortz 07 Apr '26

07 Apr '26

----- Début du message transféré de "Salmeron-Medrano, Javier (CIV)" <jsalmero(a)nps.edu> ----- From: "Salmeron-Medrano, Javier (CIV)" <jsalmero(a)nps.edu> To: "enog-info(a)euro-online.org" <enog-info(a)euro-online.org> Date: Mon, 6 Apr 2026 22:17:22 +0000 Subject: Networks special issue: could you post or distribute? Message-ID: <DS3PR13MB7649E81E37989C18D0D4EC46CC5DA(a)DS3PR13MB7649.namprd13.prod.outlook.com> Tags: euro Dear European Network Optimization Group, I am contacting you to ask if you could email your members or post an announcement on your website regarding a call for papers for a special issue dedicated to the memory of Professor R. Kevin Wood. Papers will be published in a special issue of the journal Networks and will be focused on interdiction and stochastic programming. Specific topics of interest include: 1. Deterministic and stochastic network interdiction; 2. Multi-level network games; 3. Two- and multi-stage stochastic programs on networks; 4. Large-scale network decomposition algorithms. Please see the genera announcement: [1] https://onlinelibrary.wiley.com/page/journal/10970037/ homepage/call-for-papers/si-2026-000168 The submission deadline is December 31, 2026. Sincerely, Javier Salmeron <[2]jsalmero(a)nps.edu> and David Morton < [3]david.morton(a)northwestern.edu> (Guest Editors) Javier Salmeron, Professor Operations Research Department Naval Postgraduate School Monterey, CA, 93933 831-656-2779 [4]jsalmero(a)nps.edu References: [1] https://urldefense.com/v3/__https://onlinelibrary.wiley.com/page/journal/10… [2] mailto:jsalmero@nps.edu [3] mailto:david.morton@northwestern.edu [4] mailto:jsalmero@nps.edu ----- Fin du message transféré -----

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ROADEF/EURO 2026 Challenge
by yannick.carlinet＠orange.com 24 Mar '26

24 Mar '26

Dear colleagues, We are thrilled to announce that the ROADEF/EURO 2026 Challenge is officially open! This year's edition, titled "Keep the Flow!", focuses on the optimization problem of T-Adaptive Segment Routing (T-ASR). Proposed by Orange Research, the challenge invites participants to design efficient optimization algorithms for routing in large-scale telecommunication networks, taking into account scheduled maintenance interventions and reconfiguration budgets. Watch the official teaser for a quick overview of the problem: https://youtu.be/D1jubmosffI?si=tHLxgXFQkhauTjok Key resources already available: Detailed subject description: full technical specifications. Initial dataset (Set A, for the sprint phase): to begin testing your algorithms. Solution checker: a C++20 tool to validate your results. Networktools Library: A fast header-only C++20 library for modeling and solving network optimization problems. Prizes & Participation: The competition is endowed with a total prize pool of €35,000, with categories for best teams, junior researchers (students), and scientific contributions. Find all information regarding rules, organization, and the roadmap (Sprint, Qualification, and Final phases) at https://roadef.org/challenge/ We look forward to your innovative solutions and wish you the best of luck! Sincerely, The ROADEF challenge team: Zacharie Ales, Ronan Bocquillon, Eric Bourreau, Safia Kedad-Sidhoum, David Savourey. The Orange Research challenge team: Amal Benhamiche, Yannick Carlinet, Morgan Chopin, Éric Gourdin, Nancy Perrot. Orange Restricted ____________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. Thank you.

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Call for abstracts (DEADLINE EXTENSION)- ECCO XXXIX-CO 2026 joint Conference on Combinatorial Optimization
by Luis Eduardo Neves Gouveia 14 Mar '26

14 Mar '26

Dear Colleagues, Due to numerous requests the deadline for submissions for the ECCO XXXIX - CO 2026 joint Conference on Combinatorial Optimization is extended to NEW Abstract submission deadline: March 28 , 2026 The CO XXXIX - CO 2026 joint Conference will take place on May 14-16, 2026 in Lisbon, Portugal. ECCO (the European Chapter on Combinatorial Optimization<https://en.wikipedia.org/wiki/European_Chapter_on_Combinatorial_Optimization>) is a Working Group of EURO (the Association of European Operational Research Societies<https://www.euro-online.org/web/pages/1/home>) that provides an excellent opportunity to discuss recent and important issues in Combinatorial Optimization and its applications. CO series of biennial symposia, the Combinatorial Optimization Conferences, started in the UK in 1977 with meeting venues alternated between the UK and continental Europe. Keynote speakers: William Cook, University of Waterloo Gabor Galambos, University of Szeged Joerg Kalcsics, University of Edinburgh Sergio Garcia Quiles, University of Edinburgh We invite researchers interested in the following areas to submit an abstract: * theory and applications of combinatorial optimization; * optimal solution methods, approximation algorithms and heuristics for combinatorial optimization problems; * integer programming, global optimization, stochastic integer programming, multi-objective programming, graph theory and network flows; * application domains include, but are not limited to: logistics and supply chain optimization, manufacturing, energy production and distribution, land consolidation, telecommunications, bioinformatics, finance. More details can be found at https://ecco2026.campus.ciencias.ulisboa.pt/ The Program Committee Chair Luis Gouveia

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PhD school on robust optimization in Porquerolles (France) - september 2026 - 2nd call
by Michaël Poss 08 Mar '26

08 Mar '26

Dear all This is the second call for the PhD school on robust optimization at IGESA in Porquerolles (https://maps.app.goo.gl/VismMQ5mrYzMPdDr5) on September 7-11 2026. The school will cover basics of static, adjustable, combinatorial robust optimization, as well as distributionally robust optimization, see the website https://ro2026.sciencesconf.org/?lang=en The cost of the school will be around 800€ for 4 nights (Monday - Friday), everything included. To apply to the school, please send a CV to poss(a)lirmm.fr, with topic « application to ROSCHOOL26 », no later than March 15th. Your CV should include : a description of your thesis topic and ongoing research a list of optimization classes that you have taken during your bachelor's, master's and/or doctoral studies Best, Michaël Poss

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Optimization 2023 - 1st Announcement
by Luis Eduardo Neves Gouveia 23 Feb '26

23 Feb '26

Optimization 2023 is the tenth edition of a series of Optimization international conferences held every three years, in Portugal. This meeting will be held at the University of Aveiro , July 24-26, 2023, and aims to bring together researchers and practitioners with common interests in optimization. This conference series has international recognition and is being organized under the auspices of APDIO (the Portuguese Operations Research Society). Plenary speakers: Miguel Anjos | University of Edinburgh Jacques Desrosiers | HEC Montréal Mirjam Dür| University of Augsburg Ivana Ljubic | ESSEC Business School of Paris Melvyn Sim | National University of Singapore Marc Teboulle | Tel Aviv University Abstract submission deadline: 30 April 2023 For additional information: https://optimization2023.web.ua.pt/ We look forward to meeting you in Optimization 2023, Agostinho Agra and Luis Gouveia

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CFP - MIC 2026 - 16th Metaheuristics International Conference
by Bernard Fortz 10 Feb '26

10 Feb '26

*MIC 2026 - 16th Metaheuristics International Conference* 8 - 11 June, 2026 Ischia Island (Napoli), Italy www.mic2026.unina.it ********************* Submission deadline: February 27, 2026 Number of days to deadline: 21 ********************* Aims, Themes & Scope: As per tradition, looking at the previous editions of the MIC conferences, this conference focuses on the progress of the area of Metaheuristics and their applications and provides an opportunity to the international research community to discuss recent research results, to develop new ideas and collaborations, and to meet old friends and make new ones in relaxed atmosphere. MIC 2026 strives to propose a high-quality program that will be completed by a number of invited talks, tutorials, workshops and special sessions. Solicited contributions can cover a variety of topics including but not limited to: - Metaheuristic techniques such as tabu search, simulated annealing, iterated local search, variable neighborhood search, memory-based optimization, dynamic local search, evolutionary algorithms, memetic algorithms, ant colony optimization, particle swarm optimization, scatter search, path relinking, etc. - Techniques that enhance the usability and increase the potential of metaheuristic algorithms such as reactive search mechanisms for self-tuning, offline metaheuristic algorithm configuration techniques, algorithm portfolios, parallelization of metaheuristic algorithms, etc. - Empirical and theoretical research in metaheuristics including large-scale experimental analyses, algorithm comparisons, new experimental methodologies, engineering methodologies for metaheuristic algorithms, search space analysis, theoretical insights into properties of metaheuristic algorithms, etc. - High-impact applications of metaheuristics in fields such as bioinformatics, electrical and mechanical engineering, telecommunications, sustainability, business, scheduling and timetabling. Particularly welcome are innovative applications of metaheuristic algorithms that have a potential of pushing research frontiers. - Contributions on the combination of metaheuristic techniques with those from other areas, such as integer programming, constraint programming, machine learning, etc. - Contributions on the use of metaheuristic techniques in machine learning and deep learning for finetuning and neural architecture search, etc. - Challenging applications areas such as continuous, mixed discrete-continuous, multi-objective, stochastic, or dynamic problems. MIC 2026 accepts submissions in three different formats: 1. Regular paper: novel and original research contributions of a maximum of 15 pages (LNCS format) 2. Short paper: extended abstract of novel research works of 6 pages (LNCS format) 3. Oral presentation: one page abstract describing the content of an high-quality manuscript that has recently, within the last year, been submitted or accepted for journal publication. All submitted papers will undergo a review process. All papers must be prepared using Lecture Notes in Computer Science (LNCS) template, and must be submitted in PDF using the easychair system (https://easychair.org/conferences?conf=mic2026) Accepted papers in categories 1 and 2 will be published as post-proceedings in Lecture Notes in Computer Science series by Springer. In addition, a post-conference special issue in Journal of Heuristics will be considered for the significantly extended and revised versions of selected accepted papers from categories 1 and 2. IMPORTANT DATES: All deadlines are Anywhere on Earth (AoE = UTC-12h). - December 1, 2025, submission open/registration open - February 27, 2026, submission deadline - March 27, 2026, notification of acceptance - April 10, 2026, early registration deadline - June 8-11, 2026, conference at Ischia, Italy CONTACT INFORMATION: Paola Festa (E-mail: infomic2026(a)unina.it, paola.festa(a)unina.it) Dept. of Mathematics and Applications “R. Caccioppoli”, University of Napoli “Federico II”

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Last call for papers - International Network Optimization Conference 2026 (INOC2026)
by Bernard Fortz 28 Jan '26

28 Jan '26

Last days to submit! - Submission deadlines: Short paper submission deadline: January 30. Extended abstracts deadline: February 7. - Registration will open on Februry 14. We have the pleasure to announce our confirmed plenary speakers: - William Cook, University of Waterloo, Canada - Jannis Kurtz, University of Amsterdam, The Netherlands - Angelika Wiegele, Alpen-Adria-Universität Klagenfurt, Austria INOC 2026 - Call for Papers =========================== INOC 2026, the International Network Optimization Conference, provides a forum for researchers in the broad field of network optimization to present and publish their latest results and ongoing research. INOC is the conference of the European Network Optimization Group (ENOG), a working group of EURO, the Association of European Operational Research Societies. The aim of this conference is to provide conference of the European Network Optimization Group (ENOG), a working group of EURO. The conference has been held biennially since 2003, the latest in 2024 at the University College Dublin (Dublin, Ireland). INOC 2026 is the 12th conference of this group and will take place at HEC Liège, the Management School of Liège University, Liège, Belgium, April 22-24, 2026. Topics of Interest ------------------ INOC solicits contributions in the broad field of Network Optimization, from the areas of Mathematical Optimization, Operations Research, Artificial Intelligence and Graph Theory. Application-oriented network optimization from areas like Telecommunications, Routing, Smart Grids, and Logistics are most welcome. Topics include but are not restricted to: - AI and Machine Learning for Network Optimization - Algorithmic Game Theory on Networks - Approximation Algorithms - Combinatorial Optimization - Connectivity Problems - Graph Algorithms - Graph Theory - Heuristics and Meta-heuristics - Mixed Integer Linear Programming - Mixed Integer Nonlinear Optimization - Multi-objective Optimization - Multicommodity Flows - Network Design - Network Flows - Network Interdiction - Network Optimization - Network Reliability - Path and Tree Problems - Robust Optimization - Routing Algorithms - Smart Grids - Stochastic Networks - Supply Chain Network Optimization - Sustainable Mobility and Transportation - Telecommunication Networks - Transportation Networks - Vehicle Routing Submission Guidelines --------------------- INOC accepts both short papers to be published in the proceedings and extended abstracts to be published at the conference only: - Short papers describing original work, not yet published or submitted elsewhere. Short papers can be up to 6 pages (with two columns) long. - Extended abstracts describing recent results and ongoing research can be up to 2 pages long. All submissions must be formatted with the Latex templates provided and submitted to https://easychair.org/conferences/?conf=inoc2026. For short papers, please use the template and style files in https://www.euro-online.org/inoc2026/cfp/INOC_short_paper_template.zip. For extended abstracts, use the simple template in https://www.euro-online.org/inoc2026/cfp/INOC-ext-abstract-template.zip. Contributions will be peer-reviewed by the Programme Committee. The proceedings will be published at OpenProceedings. After the conference, extended papers can be submitted to a special issue of the journal Networks. Important Dates --------------- Short papers submission deadline January 30 Extended abstracts submission deadline Februray 7 Notification of acceptance - Short papers February 13 Notification of acceptance - Extended abstracts February 20 Registration deadline March 6 Final version of short papers deadline March 6 Conference April 22-24 Full paper for the special issue of Networks deadline July 31 Contact ------- You will find information about the conference and venue on the INOC 2026 webpage (https://www.euro-online.org/inoc2026/) If you don’t find the answer there, you can email your questions about INOC 2026 to inoc2026(a)euro-online.org. We look forward to seeing you in Liège!

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