Personally, I think the direction of big data is better, because data mining itself belongs to the direction of big data.

As for the tutor, I think Dr. Liu Peng from PLA University of Science and Technology is very professional in cloud computing, cloud storage and big data. Chairman of Jiangsu Cloud Computing Forum, Head of Cloud Storage of Cloud Computing Expert Committee of Chinese Institute of Electronics, Deputy Director/Secretary General of China Cloud Computing Expert Advisory Committee, etc. And he is an authority in the industry.