So much is happening related to Big Data in almost every industry.
A general conception of Big Data (or rather difficult data) is putting a lot of
onus on collecting data. Data has been generated since years but with spreading
awareness of its power, the storage and recording of data is getting more and
more crucial. The most basic step to any analysis will be the pool of data and companies
realizing that are making efforts to store at least their internal data, if not
external data (related to their clients). For an aviation company, one flight
of half an hour can generate 30 terabytes of data (related to just technical
flight operations). Imagine the volume of data they will and can have to look
at.
But is all the Big Data usable? The answer should be NO. Data
is getting influenced (polluted) and its must to have pure and definite data
for the analysis, otherwise it can generate ambiguous outputs. Although the research
techniques and decision methodologies take care of accounting for this, I believe
a systematic approach is always needed to choose & filter Data (or at least
data source).
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Channels for Data
collection: Often the channel for data collection is not correct. You must
have observed many people approaching you i
n a mall or a public place to fill
up a short survey. Many a times if these channels are not trusted they can
manipulate data or simply extrapolate a small set, so as to save on their
effort. Choosing a trusted vendor is crucial to this. In case, someone is trying
a vendor for the first time, one must spot check and validate the survey works.
This can be done with the help of an external or third party agent or agency. 