Big Data's Impact in the World - NYTimes.com
In this article the following statement appeared:
"There is a lot more data, all the time, growing at 50 percent a year, or more than doubling every two years, estimates IDC, a technology research firm."
The phrase "doubling every two years" reminded me of Moore's law.
Do you know Moore's law? Moore's law describes a long-term trend in computer hardware, such as memory and processor. It is called a law, but actually it is an empirical rule rather than a proven scientific law. It is named after Dr. Moore who is a Intel co-founder. He stated the law in his paper published in 1965.
Moore's original statement was that transistor counts on a integrated circuit had doubled every year. Then the statement extended to a number areas related to integrated circuits. For example, the memory capacity doubles every year since the capacity of a memory is proportional to the number of transistors on it. Currently performances of digital electronic devices, such as processing speed, memory capacity, network bandwidth and so on, are considered to go along with Moore's law.
Do not underestimate the exponential nature of Moore's law. "Doubling every two years" means "4 times every 4 years", "8 times every 6 years", "16 times every 8 years", "32 times every 10 years", ..., "1024 times every 20 years", ..., "1048576 times every 40 years" and so on. Assume that a computer had a memory of 1K byte (1024 byte) 40 years ago. With "doubling every two years" it becomes 1048576K byte (about 1GB) now.
The article above said data grows according to Moore's law. But wait. Moore's law is to be applied only to hardware. I wondered whether it holds true for data.
Then I remembered another law: Parkinson's law:
The original Parkinson's law is:
"Work expands so as to fill the time available for its completion."
It says that work never finishes before the deadline. I always experience it. Then it is extended to other resources. A Corollary is:
"Data expands to fill the space available for storage."
Yes, my Mac keeps complaining that "Start Up Disk is Almost Full."
Now I've got everything.
Moore's law: Storage doubles every two year.
Parkinson's law: Data expands to fill the space available for storage.
Combining the two laws together we get:
Data expands to fill the space available for storage that doubles every two year.
This leads the following:
Big Data's law: Data doubles every two year.
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About one week ago I read an article on Big Data, which is a 'Next Big Thing' in the IT field. Big Data's Impact in the World - NYTimes.com http://www.nytimes.com/2012/02/12/sunday-review/big-datas-impact-in-the-world.html In this article the following statement appeared: "There is a lot mo