This paper presents clear evidence of the value of group model building for supporting group decision processes. It responds to Rouwette et al.’s (2002) challenge to take GMB assessments beyond unstructured single case descriptions that cannot be easily compared. This paper compares two parallel, real-world problem solving teams examining urban growth issues in Las Vegas, Nevada over the same t...

This note compares the performance of two multidimensional search and optimization algorithms: Group Search Optimizer and Central Force Optimization. GSO is a new state-of-theart algorithm that has gained some notoriety, consequently providing an excellent yardstick for measuring the performance of other algorithms. CFO is a novel deterministic metaheuristic that has performed well against GSO ...

We report some computational results comparing parallel and sequential codes for vertex/facet enumeration problems for convex polyhedra. The problems chosen span the range from simple to highly degenerate polytopes. We tested one code (lrs) based on pivoting and four codes (cddr+, ppl , normaliz , porta) based on the double description method. normaliz employs parallelization as do the codes pl...