Summary:  There are several approaches to reducing the cost of training data for AI, one of which is to get it for free.  Here are some excellent sources.

Recently we wrote that training data (not just data in general) is the new oil.  It’s the difficulty…

As a potential Ph.D. candidate in data analytics and as an AI enthusiast and architect. I wondered why is it not the case that I can ask an AI that question "Which research topic would you recommend me to dig in"?! A bit vague though, so I decided to be more specific in order to simplify the problem for the AI. Which research topic is getting most grant funds?!

I think an AI should be at least able to answer this question if you give it a data source that it parse/read from…