If there is a ceiling on realizing the benets of Big Data algorithms, applications, and techniques, we have not yet reached it. e research eld, initially coined “Big Data” in 2001 , is maturing rapidly. No longer are we seeking to understand what Big Data is and whether it is useful. No longer is Big Data processing the province of niche computer science research. Rather, the concept of Big Data has been widely accepted as important and inexorable, and the buzzwords “Big Data” have found their way beyond computer science into the essential tools of business, government, and media.