f Frameworks for Modeling and Inversion

Inversion combines modelling with optimisation, two computational domains with quite different concepts and requirements. I suggest a few simple principles that help to organize software for these two types of tasks into linked frameworks. Code libraries based on these principles minimize the work involved in construction of modelling and inversion applications, and maximize the reliability of the end product. This paper presents example libraries constructed by the author’s research group, the principles on which they are based, and some examples of their use.