News
GDN2026: Proposal Submission Window is Open
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The process of submitting thematic tracks, panels, and sessions for the GDN2026 conference is currently underway. Submissions can be sent via email to: This email address is being protected from spambots. You need JavaScript enabled to view it., including a short description of the track using the template: GDN-2026-stream-proposal-form.docx. More information about the GDN2026 events, their organisation, and deadlines can be found on the conference homepage: https://gdnconference.org/gdn2026/
SOR2025 conference in Bled
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The 18th International Symposium on Operations Research in Slovenia (SOR 2025) took place in Bled, Slovenia, from September 24 to 26, 2025. The event was organized by the Slovenian Operations Research Society Informatika in cooperation with the Universities of Ljubljana and Maribor.
The N.EA research group and the Department of Operations Research in Katowice were represented by Prof. Tomasz Wachowicz, Dr. Anna Gorczyca-Goraj, and MSc. Krzysztof Grzanka, who delivered research presentations during the conference.
The meeting also provided an opportunity for an exchange of commemorative diplomas between representatives of the University of Ljubljana and the University of Economics in Katowice.
GDN2026 in Katowice
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We warmly invite you to attend the 26th edition of the International Conference on Group Decision and Negotiation (GDN 2026), which will be held from June 21 to 24 June 28 to July 1, 2026, at the (UEKat) – the oldest public university in the Silesia region, founded in 1937. UEKat is one of Poland’s five public economic universities and is located just a few minutes from the city centre of Katowice, the capital of the Upper Silesian Metropolis (Metropolis GZM) – only eight minutes by tram from the central marketplace (see route on Google Maps).
New issue of GDN newsletter
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In the last week of July, the 12th issue of the newsletter published by the GDN INFORMS Section was released. The newsletter features the latest updates from the life of the section. The current issue, along with all archived editions, is available on the section’s website: https://gdnconference.org/newsletter/
GDN 2025, Zaragoza
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From June 15 to 18, 2025, the 25th edition of the international scientific conference Group Decision and Negotiation took place in Zaragoza. For years, this conference has served as an international forum for the exchange of ideas among researchers and practitioners working on the interdisciplinary issues of negotiation and group decision-making. GDN 2025 (https://gdnconference.org/gdn2025/) was organized by the University of Zaragoza, under the scientific leadership of Prof. Jose-Maria Moreno Jimenez. Among the many thematic tracks that make up the GDN conference, the track Preference Modeling for Group Decision and Negotiation has been held annually since 2015, organized by Prof. Danielle Costa Morais from the Federal University of Pernambuco in Recife (Brazil) and Prof. Tomasz Wachowicz from the University of Economics in Katowice (Poland).