500 Large Scale and Big Data
have led to the creation of ever increasing volumes of data on a daily basis. This
data is also diverse, ranging from images and videos (e.g., from mobile phones being
uploaded to websites such as Facebook and YouTube), to 24/7 digital TV broadcasts
and surveillance footages (e.g., from hundreds of thousands of security cameras), to
large scientic experiments (e.g., the Large Hadron Collider [35]), which produces
many terabytes of data every single day. IDC’s latest Digital Universe Study predicts
a 300-fold increase in the volume of data globally, from 130 exabytes in 2012 to
30,000 exabytes in 2020 [23].
Organizations are trying to leverage or, in fact, cope with the vast and diverse
volumes of data (or Big D ...