This scientific meeting explores the intersections and uncharted territories between machine learning, artificial intelligence, operations research, meta-heuristics and related fields. It continues the successful series of LION events started more than 20 years ago (latest editions LION20 @ Milano, Italy; LION19 @ Prague,Czech Republic; LION18 @ Ischia, Italy; LION17 @ Nice, France). The LION conference series is run by the non-profit LION Association. The LION Manifesto articulates the research areas that are most relevant for the conference. Novel contributions are welcomed from both theory and practice perspectives.
Topics of Interest
Applications of such topics in economics, energy, environmental sciences, healthcare, management, robotics and other real-world areas are welcomed.
All times are Anywhere on Earth (AoE).
To recognize the value of interacting with outstanding experts, LION Extended Talks traditionally consist of two parts: a tutorial introduction followed by a state-of-the-art segment with a Q&A session. These speakers and their talk abstracts will be posted here.
Types of Submissions
When submitting a paper to LION21, choose one of the following three types of papers:
For full papers (long or short), the page count is including references, but excluding any appendices.
Please note that the review process for LION21 is single blind. Authors do not need to make their submissions anonymous.
Paper Format & Submission
Please prepare your paper in English using the Lecture Notes in Computer Science (LNCS) template, available from Springer.
Papers may be submitted in PDF format via Easychair. The submission link will be provided here by 1 December.
Please note that submission of a paper implies that at least one author will register for the conference by the early registration deadline, and be present in person at LION21 to present the paper.
Proceedings
Papers accepted into the LION21 proceedings will be published in Lecture Notes in Computer Science (LNCS) by Springer.
It is LION tradition that conference proceedings be published after the conference, so that authors can incorporate any comments received during the event into the final version. Only an online preprint (in PDF) will be made available to the participants in the conference website if the authors decide to make it available.
Special Track of ACM Transactions on Evolutionary Learning and Optimization (TELO)
NEWS: LION this year will offer a fast-track for publishing in ACM Transactions on Evolutionary Learning and Optimization (TELO), in addition to our standard proceedings in Lecture Notes in Computer Science. Authors of accepted papers will be informed about the ACM TELO fast track in due course.
In addition to submissions about general LION themes, we also welcome submissions related to one of our special sessions. The special sessions will be part of the regular conference and are subject to the same peer-review as all other submissions. Details will be posted here. Please address proposals for special sessions to the TPC Chair: Neil Yorke-Smith - n.yorke-smith(AT)tudelft.nl, with CC: roberto.battiti(AT)unitn.it.
Stefan Voss,
University of Hamburg, Germany
Jingjing Yu,
Pompeu Fabra University, Barcelona
Neil-Yorke-Smith, Delft University of Technology, The Netherlands
Maximilian Schiffer, University of Hamburg, Germany
Kevin Tierney, University of Vienna, Austria
Yingqian Zhang, Eindhoven University of Technology, The Netherlands
Roberto
Battiti
(University of Trento, Italy) - President of the non-profit LION association
Francesco
Archetti (University of Milano-Bicocca, Italy)
Christian
Blum (Spanish National Research Council (CSIC), Spain)
Mauro
Brunato (University of Trento, Italy)
Carlos A.
Coello-Coello
(CINVESTAV-IPN, Mexico)
Clarisse
Dhaenens
(University of Lille, France)
Paola Festa
(University of Napoli, Italy)
Martin
Charles Golumbic
(University of Haifa, Israel)
Youssef
Hamadi (Tempero Tech, France)
Milan
Hladik (Charles
University, Czech Republic)
Laetitia
Jourdan
(University of Lille, France)
Nikolaos Matsatsinis
(Technical University of Crete, Greece)
Hossein
Moosaei (Jan Evangelista Purkyně University, Czech Republic)
Panos
Pardalos
(University of Florida, USA)
Mauricio
Resende
(University of Washington, USA)
Meinolf
Sellmann
(InsideOpt, USA)
Yaroslav
Sergeyev
(University of Calabria, Italy)
Dimitris
Simos (SBA
Research, Austria)
Thomas
Stuetzle
(University of Bruxelles, Belgium)
Kevin
Tierney (Vienna University, Austria)
Yingqian Zhang
(Eindhoven University of Technology, The Netherlands)
LION21 will be hosted by Pompeu Fabra University in Barcelona. Further practical information will be provided here in due course.
Registration is expected to open in March 2027.
| Conference fees | ||
|---|---|---|
| Early Registration (until 16 April 2027) | Late Registration | |
| Regular | Eur 520 | Eur 620 |
| Student | Eur 450 | Eur 520 |
| Accompanying Person | Eur 200 | Eur 200 |
| Kiss-and-Fly (one-day attendance) | Eur 180 | Eur 180 |
Regular and student fees include: Attendance at all keynotes, sessions, posters, conference
materials, publication of accepted papers in LNCS, membership in LION association, coffee breaks,
lunches, welcome reception, conference dinner, and social programme. Proof of student status (post-graduate, under-graduate or school) may be requested for student rate participants.
Accompanying person fee includes: Conference dinner and social programme.
Kiss-and-Fly fee includes: Attendance at all keynotes, sessions, posters coffee breaks, lunch
for a specific date only. Social events and dinners are excluded. The fee does not depend on
membership or student status.
Enquiries about paper submissions may be sent by email to the Programme Chair. General enquiries may be sent to the General Chairs by email.