A vast quantity of UNSTRUCTURED data, which we now have the ability to process in REAL-TIME.
WHY IS IT BECOMING IMPORTANT NOW ?
HOW BIG IS BIG DATA ?
2.7 Zetabytes (that's 27 with 21 0s after it) of data exist in the digital universe today.
By 2020 analysts predict the amount of data will be 50x what it is today.
In 2012 90% of all the data that existed in our entire history had been created in the previous 2 years.
Every 2 days we create as much information as we did from the beginning of time up to 2003.
HOW ARE PEOPLE USING IT ?
L.A.P.D. AND UNIVERSITY OF CALIFORNIA
The LAPD and University of California are using Big Data to predict crime before it even happens.
GOOGLE FLU TRENDS
Google Flu Trends uses search terms to predict the spread of the flu virus.
OUTCOME OF THE US ELECTION
Statistician Nate Silver predicted the outcome of the US election down to each individual state in 2012.
MIT are using mobile phone data to establish how peoples' locations and traffic patterns can be used for urban planning.