Hi, this part of Module 4 “Modelling non-linear features-target relationships” starts with an exercise notebook M4.02, than there is a lecture, than exercise M4.03.
Is this setup made intentionally or is there a lecture missing before the first exercise notebook?
Yes this is intentional. Maybe we could add a paragraph at the beginning of the exercise to explain that we do this on purpose to motivate the need for non-linear feature engineering.
EDIT the rest of the organization of this sequence could also be refactored / improved / extended as documented here: Sequence on non-linear feature engineering for linear models is inconsistent · Issue #358 · INRIA/scikit-learn-mooc · GitHub