No, machine learning as far as implementation goes is not on topic for this site. We've had two previous failures in launching a site about AI (which already included machine learning) — and the resolution following those failures was to create a more-comprehensive site which included the development of AI, machine learning, statistical tools, big data, NLP, data mining, etc, etc.
That site is Data Science
Data Science is an applied site for all the programmers/statisticians/mathematicians who are trying to make this stuff work.
So why are we trying an AI site… again?
Notice that this proposal is in the 'Science' category; not 'Technology'. Despite the creation of a Data Science site to cover this topic, the community made a sufficiently compelling case that there is a swath of questions in the academic humanities arena that are not covered by our current sites.
It was convincing enough to give this site another try, but if this site were to simply start reiterating the implementation/tools questions that are already covered elsewhere, this site will not likely make it out of private beta.