differential evolution algorithm for fitting
GenX is a versatile program using the differential evolution
algorithm for fitting, primarily, X-ray and neutron reflectivity
data, lately also surface x-ray diffraction data. The differential
evolution algorithm is a robust optimization method which avoids
local minima but at same is a highly effective. GenX is written in
Python and uses the wxpython package for the Graphical User Interface
(GUI). A model to fit is defined either through a GUI plug-in or via
a Python script. The possibility to script everything makes it easy
to develop completely new fitting model. Clearly, GenX is extremely
modular, making it possible to extend the program with models and
plug-ins for most fitting problems. At the present GenX is shipped
with models for x-ray and neutron specular reflectivity,
off-specular x-ray reflectivity and surface x-ray diffraction
