[D] Simple Questions Thread

Web: https://www.reddit.com/r/MachineLearning/comments/vfx16r/d_simple_questions_thread/

Please post your questions here instead of creating a new thread. Encourage others who create new posts for questions to post here instead!

Thread will stay alive until next one so keep posting after the date in the title.

Thanks to everyone for answering questions in the previous thread!

machinelearning