  One of the most popular approaches to understanding feature effects of modern
black box machine learning models are partial dependence plots (PDP). These
plots are easy to understand but only able to visualize low order dependencies.
The paper is about the question 'How much can we see?': A framework is
developed to quantify the explainability of arbitrary machine learning models,
i.e. up to what degree the visualization as given by a PDP is able to explain
the predictions of the model. The result allows for a judgement whether an
attempt to explain a black box model is sufficient or not.
