EDES/Model vers. 2.12 -- Nonlinear mathematical modeling package (Empirical Data Expert System). EDES/Model is built around the use of a proprietary family of nonlinear transformations. A Neural Network model generator is also incorporated within the program so that an entire family of candidate nonlinear models can be automatically generated for a given set of empirical data. A trial version of EDES/Model will be available for download in the near future.