(a) Rapid growth in market size, the supply structure is initially formed Rapid growth in market size. Since the Twelfth Five-Year Plan, China's big data industry from scratch, the development of big data across the country is more active, industry applications have been rapidly promoted, and the market scale has grown significantly. Yi Guan International data show that in 2011-2014, China's big data market size was 3.74 billion yuan, 4.73 billion yuan, 5.9 billion yuan and 7.57 billion yuan, with an average annual compound growth of about 27%. Econometrics International also predicts that in 2015 and 2016 China's big data market size will maintain a growth rate of about 30%, and at the end of the 12th Five-Year Plan the market size is close to 10 billion yuan.