Abstract: A system, a software, and a method of generating a model regarding the allocation and relocation problem in vehicle-sharing or ride-sharing systems, especially free-floating vehicle-sharing systems. The system, software, and method are suitable for a large number of locations or a large area and/or a large number of vehicles, and especially considering potential future demands, while improving modeling of the demand. The area or location is an area or location on the earth. The method includes an iterative method, especially an iterative computer-implemented method, for generating a model for forecasting vehicle demand and/or allocation and/or reallocation of vehicles based on this model in a free-floating vehicle sharing (FFVS) system. The disclosure further concerns methods for positioning vehicles for rent, forecasting suitable positions for (re-)positioning of vehicles for rent and/or forecasting vehicle demand using said model.