Regression tests for a model?

Questions
5

The latter: changing the model structure and gauging the impact of the changes.

Is this different from a normal model development workflow? It would be, at least for my model development workflow. Here’s what I do today:

  1. make a change
  2. examine some parameters, to make sure nothing obvious is now broken
  3. examine the parameters I expect to be affected by the change

But #2 is far from complete. I often miss stuff that is broken.

Maybe my model development workflow is atypical?