Tweeted By @ogrisel

Freshly merged in the @scikit_learn main branch: periodic spline features:https://t.co/g6MTtmMKSY

Avoids introducing a jump between Dec 31st and Jan 1st when doing non linear, smooth feature engineering on a "day of year" input feature for instance.

Thanks Malte Londschien! pic.twitter.com/g638Sl6sZa

— Olivier Grisel (@ogrisel) March 17, 2021