To my knowledge, a lot of research is from market to university, from university to mathematics, Therefore, the scientification of anything is very slow different from what market can "see".
Big data is experiencing similar evolution.
What is the fundamentals of big data, what is the mathematical foundation of big data, big data analytics. This is why Professor Wang and I launch a special issue to big data analytics and intelligence in Journal of New Mathematics and Natural Computation. We are still waiting for your contribution to our special issue.