The search terms there would be "Model Calibration" and/or "System Identification" Software. I think those are again very domain specific. But there are a few.

The search terms there would be "Model Calibration" and/or "System Identification" Software. I think those are again very domain specific. But there are a few. PS: While AI and machine learning are catching on in many different fields, the software packages in those domains make heavy use of fairly complicated fitting and approximations methods already. Lots or correlation and effect estimation, which builds many of the underlying guts of machine learning.