retrain

Etymology

re- + train

verb

1. (transitive, intransitive) To train again; especially, to train or study in a new subject or job
   New York City's largest hospital has agreed to retrain some unionized employees whose jobs were to be eliminated under an austerity drive, the hospital and its largest labor union said yesterday. February 25, 1989, “Hospital Will Retrain Workers to Save Jobs”, in New York Times
   If we choose to change our diets and consistently eat healthier foods we retrain our brains, and the foods we initially found distasteful will become enjoyable. 2018, Timothy R. Jennings, The Aging Brain, page 81

noun

1. An instance of training again.
   This adds a bit of complexity as it means that our solution should not retrain for every request coming in but be able to determine whether a retrain is worth it for a given request or whether the model is already up to date. 2021, Andrew P. McMahon, Machine Learning Engineering with Python, page 221