<s>
Data	B-Application
exhaust	I-Application
or	O
exhaust	O
data	O
is	O
the	O
trail	O
of	O
data	O
left	O
by	O
the	O
activities	O
of	O
an	O
Internet	O
or	O
other	O
computer	O
system	O
users	O
during	O
their	O
online	O
activity	O
,	O
behavior	O
,	O
and	O
transactions	O
.	O
</s>
<s>
This	O
is	O
part	O
of	O
a	O
broader	O
category	O
of	O
unconventional	O
data	O
that	O
includes	O
geospatial	O
,	O
network	O
,	O
and	O
time-series	O
data	O
and	O
may	O
be	O
useful	O
for	O
predictive	B-General_Concept
analytics	I-General_Concept
.	O
</s>
<s>
An	O
enormous	O
amount	O
of	O
often	O
raw	O
data	O
are	O
created	O
,	O
which	O
can	O
be	O
in	O
the	O
form	O
of	O
cookies	B-Application
,	O
temporary	O
files	O
,	O
logfiles	B-Application
,	O
storable	O
choices	O
,	O
and	O
more	O
.	O
</s>
<s>
It	O
can	O
be	O
used	O
to	O
improve	O
tracking	O
trends	O
and	O
studying	O
data	B-Application
exhaust	I-Application
also	O
improves	O
the	O
user	O
interface	O
and	O
the	O
layout	O
design	O
.	O
</s>
<s>
For	O
example	O
,	O
as	O
the	O
world	O
's	O
most	O
popular	O
website	O
,	O
Google	O
,	O
uses	O
this	O
data	B-Application
exhaust	I-Application
to	O
refine	O
the	O
predictive	O
value	O
of	O
their	O
products	O
.	O
</s>
<s>
Using	O
electronic	B-Application
medical	I-Application
records	I-Application
(	O
EMR	O
)	O
for	O
research	O
poses	O
a	O
large	O
number	O
of	O
challenges	O
,	O
the	O
most	O
prevalent	O
being	O
the	O
amount	O
of	O
data	O
there	O
is	O
.	O
</s>
<s>
Although	O
data	B-Application
exhaust	I-Application
is	O
not	O
a	O
new	O
concept	O
,	O
the	O
ubiquity	O
of	O
internet-enabled	O
gadgetry	O
has	O
exacerbated	O
the	O
scope	O
and	O
impacts	O
of	O
our	O
passive	O
digital	O
trail	O
.	O
</s>
