INFORMS represents professionals in the fields of operations research and the management sciences (OR/MS), and in related fields such as information technology. http://www.informs.org/
Algorithmic Methods for Optimizing the Railways in Europe. An EU Research Trianing Network with participating research groups from Denmark, Germany, Greece, Italy, The Netherlands, and Switzerland. http://www.inf.uni-konstanz.de/algo/amore
Studies artificial systems that take inspiration from the behavior of real ant colonies and which are used to solve discrete optimization problems. http://iridia.ulb.ac.be/~mdorigo/ACO/about.html
Promotes parametric cost modeling techniques and methodologies and the related fields of risk analysis, econometrics, design-to-cost, technology forecasting, and management. http://www.ispa-cost.org/
Provides training, conferences, publications and information to those working in Operational Research. Features study groups, regional societies, training, publications, conferences and news. http://www.theorsociety.com/