Besides the symposia a number of workshops, conferences and other meetings were organized by ISIR, individually and jointly with organizations such as the Econometric Society, the American Economic Association, the International Institute for Applied System Analysis, GRD College of Science in Coimbatore, India and the Siena University in Italy and the University of Aarhus, Denmark.
The first ISIR Summer School on Inventory Modelling was held in Leipzig, Germany in 1993. Since then similar summer schools have been organized biannually (1995: Portoroz, Slovenia, 1997: Ioannina, Greece, 1999: Exeter, United Kingdom,2001: Loftahammar, Sweden; Eindhoven, The Netherlands, 2003; Mannheim, Germany, 2005; Brescia, Italy, 2007; Katowice, Poland, 2009).