| ESI XXXVIII - Aachen, Germany, 2026 |
| 20 September - 2 October 2026 |
| Organiser(s): Christina Büsing Theme: Data-Driven Health Care under Uncertainty |
| ESI XXXVII - Gardanne, France, 2026 |
| 14-25 April 2026 |
| Organiser(s): Stéphane Dauzère-Pérès Theme: Lot Sizing, Production and Distribution Planning: Foundations and Advanced Methods |
| ESI XXXVI - Forio d’Ischia, Italy 2024 |
| 15-25 September 2024 |
| Organiser(s): Rita Laura D’Ecclesia and Francesca Maggioni Theme: Decision-Making Under Uncertainty for Commodities and Financial Markets |
| Final Report |
| EWI XXXV - Edinburgh, UK 2022 |
| 11-24 June 2022 |
| Organiser(s): Sergio García Quiles and Jörg Kalcsics Theme: Location Science |
| Final Report |
| EWI XXXIV - Frankfurt, Germany 2018 |
| 5 - 16 March 2018 |
| Organiser(s): Christian Almeder, Stéphane Dauzère-Pérès Theme: Lot-Sizing and Related Topics |
| Final Report |
| EWI XXXIII - Bressanone, Italy 2017 |
| 14 - 23 February 2017 |
| Organiser(s): Riccardo Rossi (chair), Massimiliano Gastaldi, Gregorio Gecchele Theme: Methods and models in transportation problems |
| Final Report |
| ESI XXXII - Szeged, Hungary 2015 |
| 15 - 27 June 2015 |
| Organiser(s): János Balogh, József Békési, János Csirik, György Dósa, Tibor Illés, Csanád Imreh, Miklós Krész, Attila Tóth Theme: Online Optimization |
| Final Report |
| ESI XXXI - Bard, Italy 2014 |
| 11 - 20 June 2014 |
| Organiser(s): Roberto Aringhieri, Vincent Knight, Honora Smith Theme: Operational Research Applied to Health in a Modern World |
| Final Report |
| ESI XXX - Lleida, Spain 2014 |
| 19 July - 1 August 2014 |
| Organiser(s): Laureano Escudero, Frederik Garcia, Ilan halachmi, Andrew Higgins, Anders R. Kristensen, Jacqueline Bloemhof, Lluis M. Plà Theme: OR in Agriculture and Agrifood Industry |
| Final Report |
| ESI XXIX - Porto, Portugal 2012 |
| 16 - 27 July 2012 |
| Organiser(s): António Miguel Gomes Theme: Cuttting and Packing |
| Final Report |
| ESI XXVIII - Bremen, Germany 2012 |
| 3 - 15 June 2012 |
| Organiser(s): Christian Bierwirth Theme: Maritime Logistics |
| Final Report |
| ESI XXVII - Klagenfurt, Austria 2010 |
| 20 August - 4 September 2010 |
| Organiser(s): Franz Rendl Theme: Nonlinear Methods in Combinatorial Optimization |
| Final Report |
| ESI XXVI - Lleida, Spain 2009 |
| 25 July - 8 August 2009 |
| Organiser(s): L.M. Plà Theme: OR in Agriculture and Forest Management |
| Final Report |
| EWI XXV - Estoril, Portugal 2007 |
| 27 January - 10 February 2007 |
| Organiser(s): Francisco Saldanha da Gama Theme: Location and Logistics |
| Final Report |
| EWI XXIV - Lutherstadt Wittenberg, Germany 2006 |
| 18 August - 2 September 2006 |
| Organiser(s): Mirjam Dür Theme: Optimization Challenges in Engineering: Methods, Software, and Application |
| Final Report |
| ESI XXIII - Southampton, UK 2005 |
| 24 July - 7 August 2005 |
| Organiser(s): Sally Brailsford Theme: OR in Healthcare |
| Final Report |
| ESI XXII - Ankara, Turkey 2004 |
| 9 - 25 July 2004 |
| Organiser(s): Bülent Karasözen Theme: Optimization and Data Mining |
| Final Report |
| ESI XXI - Neringa, Lithuania 2003 |
| 25 July - 7 August 2003 |
| Organiser(s): Leonidas Sakalauskas Theme: Stochastic and Heuristic Methods in Optimization |
| Final Report |
| ESI XX - Grainau, Germany 2002 |
| 23 August - 1 September 2002 |
| Organiser(s): Hartmut Stadtler Theme: Supply Chain Management and Advanced Planning |
| ESI XIX - Toulouse, France 2001 |
| 9 - 21 september 2001 |
| Organiser(s): Patrice Perny, Alexis Tsoukias Theme: Decision Analysis and Artificial Intelligence |
| Final Report |
| EWI XVIII - Lac Noir, Switzerland 2000 |
| 5 - 17 March 2000 |
| Organiser(s): Marino Widmer Theme: Metaheuristics in Combinatorial Optimization |
| Final Report |
| EWI XVII - Ilonantsi, Finland 1999 - cancelled |
| 26 February - 14 March 1999 |
| Organiser(s): Tuula Kinnunen Theme: Protection and Exploitation of Renewable Resources |
| ESI XVI - Warwick, UK 1998 |
| 16 - 26 August 1998 |
| Organiser(s): Cláudia S. Sarrico Theme: Performance measurement (DEA) |
| Final Report |
| ESI XV - Aosta valley, Italy 1997 |
| 12 - 26 September 1997 |
| Organiser(s): Roberto Tadei Theme: Production Scheduling, Deterministic, Stochastic and Fuzzy Approaches |
| Final Report |
| ESI XIV - Piraeus, Greece 1996 |
| 7 - 21 June 1996 |
| Organiser(s): Costas Pappis Theme: Environmental Planning |
| Final Report |
| EWI XIII - Semmering, Austria 1996 |
| 7 - 18 January 1996 |
| Organiser(s): Georg Pflug Theme: Stochastic Optimization |
| Final Report |
| ESI XII - Tenerife, Spain 1995 |
| 17 - 30 June 1995 |
| Organiser(s): Jaume Barcelo, José Andrés Moreno Theme: Location Analysis |
| Progress Report |
| ESI XI - Salford, UK 1995 |
| 18 - 29 April 1995 |
| Organiser(s): Anthony Christer Theme: Maintenance, Replacement and Reliability Modelling |
| Programme |
| ESI X - Jouy-en-Josas, France 1994 |
| 2 - 15 July 1994 |
| Organiser(s): Catherine Roucairol, Hervé Thiriez Theme: Combinatorial Optimization |
| Final Report |
| ESI IX - Mannheim, Germany 1993 |
| 24 July - 7 August 1993 |
| Organiser(s): Christoph Schneeweiss Theme: Hierarchical Planning |
| Progress Report |
| ESI VIII - Rosersberg, Sweden 1992 |
| 13 - 27 June 1992 |
| Organiser(s): Sven-Eric Andersson Theme: Risk Management in Complex Production and Transportation Systems |
| Participants |
| ESI VII - Cetraro, Italy 1991 |
| 21 June - 7 July 1991 |
| Organiser(s): Maurizio Bielli Theme: Urban Traffic Management |
| Participants |
| ESI VI - Funchal, Portugal 1989 |
| 26 May - 10 June 1989 |
| Organiser(s): Jose Paixão Theme: Decision Support Systems |
| ESI V - Eindhoven, The Netherlands 1988 |
| 17 June - 3 July 1988 |
| Organiser(s): Ton de Kok Theme: Production Planning and Control |
| Final Report |
| ESI IV - Turku, Finland 1987 |
| 5 - 21 June 1987 |
| Organiser(s): Christer Carlsson Theme: Systems Science |
| Final Report |
| ESI III - Canterbury, UK 1986 |
| 23 August - 12 September 1986 |
| Organiser(s): Valerie Belton Theme: Decision-making in an Uncertain World |
| Thank You Letter |
| ESI II - Brussels, Belgium 1985 |
| 12 July - 2 August 1985 |
| Organiser(s): Jean-Pierre Brans Theme: Multicriteria Analysis |
| Programme |
| ESI I - Brussels, Belgium 1984 |
| 20 July - 10 August 1984 |
| Organiser(s): Jean-Pierre Brans Theme: Location Theory |
| Programme |
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