Table 1.

Global growth of big data and computer science papers on big data.

Year	Data volume, ZBa,c	Conference papers, CSb,c	Journal papers, CSc
2009	1.5	12	7
2010	2	26	7
2011	2.5	32	23
2012	3	78	47
2015	8	?	?
2020	44	??	??

^aData from oracle [17].

^bData from Research Trends [18].

^cCS, computer science; ZB, zettabytes (1 zettabyte = 1000 terabytes = 10⁶ petabytes = 10¹⁸ gigabytes, GB).