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什么是大数据
W h a t i s B i g D a t a
Big Data
Big data is something that cannot be done on the basis of
small-scale data, but can only be done on the basis of large-scale
data
Viktor Mayer-Schönberger
2
More
度假去。。。
The earlier you book expensive !
a ticket, the cheaper
it will be
Predicting the change It can be predicted the future
trend of ticket price trend of flight ticket price if
with big data collecting enough historical
data of flight ticket price
Oren Etzioni
The reason for studying big data is that more and more data
have to be processed, which is beyond the processing capacity and
storage capacity of general personal computers, so we have to
study some new data processing technologies 。
MapReduce and Hadoop
The massive data is big data
4
1PB=1024TB=1024*1024GB
Characteristics of big data
The amount of data is huge. The data volume of big
Volume data is usually measured by PB, EB, or even ZB and
YB.
Variety The sources are diverse, and the types and
structures are complex.
Large amount of data but low value density. How to
Value
min
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