Where should I post A.I. Questions?

Hi all;

This is a follow-on question to #742808. I am trying to write a recommendation engine and based on the very useful help from @Diet this is not something I will use OpenAI for.

So… where is the best place to ask for advice on building a recommendation engine? Is there an A.I. StackOverflow forum somewhere? (Although StackOverflow is not a great example as it is hostile to questions that ask for an opinion and learning questions are, by definition, often asking for an opinion.)

thanks - dave