Lesson 5 Big Data
Big Data
Every Move Counts
It is now almost impossible to live a truly private life because every human activity, be it a walk to the park or the sending of a simple text message, produces data.
Phones, TVs, computers, cameras in cars, and sensors in buildings and street corners all generate different forms of data.
The Internet of Things (IoT) connects home appliances to the web, uploading such everyday information as how often we take cheese from the fridge or do a load of laundry.
The development of information and communications technology allows this data not only to be generated but also to be collected and stored.
Almost every move we make adds up to form a vast bank of information called Big Data.
What Is Big Data?
Big Data is frequently characterized and defined by volume, variety, and velocity: huge amounts of data collected from many different sources in real time.
In fact, the total accumulation of data from the past two years alone is greater than all of the information ever recorded before that.
In addition, data comes in various forms, ranging from texts, pictures, and sound files to GPS-based location information and credit card transaction records.
Moreover, such data is gathered and stored at a remarkable speed: as soon as you use your library card, a record of your visit can be sent to the web and may contribute to expanding the pool of data.
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