Abstract for: Dynamic Shares: a novel mechanism for many-to-many allocation in system dynamics

The allocation problems are common in system dynamics models. They become many-to-many problems when products have to be allocated between many suppliers and many demanders. This paper describes a simple and effective way to solve many-to-many allocation problems based on a mechanism that we call Dynamic Shares. This mechanism has been successfully applied to several real-world problems of the models developed at GEEDS research group and enables flexible allocation of resources of many suppliers to many demanders in a simple and efficient way. Results of the allocation of agricultural area to several crops used in the WILIAM integrated assessment model and of the allocation of two final energy demands to three primary resources are shown.