<s>
Arizona	O
Financial	O
Text	O
System	O
(	O
AZFinText	B-General_Concept
)	O
is	O
a	O
textual-based	O
quantitative	O
financial	O
prediction	O
system	O
written	O
by	O
Robert	O
P	O
.	O
Schumaker	O
of	O
University	O
of	O
Texas	O
at	O
Tyler	O
and	O
Hsinchun	O
Chen	O
of	O
the	O
University	O
of	O
Arizona	O
.	O
</s>
<s>
AZFinText	B-General_Concept
overcomes	O
these	O
limitations	O
by	O
utilizing	O
the	O
terms	O
used	O
in	O
financial	O
news	O
articles	O
to	O
predict	O
future	O
stock	O
prices	O
twenty	O
minutes	O
after	O
the	O
news	O
article	O
has	O
been	O
released	O
.	O
</s>
<s>
AZFinText	B-General_Concept
capitalizes	O
on	O
the	O
arbitrage	O
opportunities	O
that	O
exist	O
when	O
investment	O
experts	O
over	O
and	O
under-react	O
to	O
certain	O
news	O
stories	O
.	O
</s>
<s>
By	O
analyzing	O
breaking	O
financial	O
news	O
articles	O
and	O
focusing	O
on	O
specific	O
parts	O
of	O
speech	O
,	O
portfolio	O
selection	O
,	O
term	O
weighting	O
and	O
even	O
article	O
sentiment	O
,	O
the	O
AZFinText	B-General_Concept
system	O
becomes	O
a	O
powerful	O
tool	O
and	O
is	O
a	O
radically	O
different	O
way	O
of	O
looking	O
at	O
stock	O
market	O
prediction	O
.	O
</s>
<s>
The	O
foundation	O
of	O
AZFinText	B-General_Concept
can	O
be	O
found	O
in	O
the	O
ACM	O
TOIS	O
article	O
.	O
</s>
<s>
Combining	O
the	O
two	O
,	O
AZFinText	B-General_Concept
netted	O
a	O
2.84	O
%	O
trading	O
return	O
over	O
the	O
five-week	O
study	O
period	O
.	O
</s>
<s>
AZFinText	B-General_Concept
was	O
then	O
extended	O
to	O
study	O
what	O
combination	O
of	O
peer	O
organizations	O
help	O
to	O
best	O
train	O
the	O
system	O
.	O
</s>
<s>
Using	O
the	O
premise	O
that	O
IBM	O
has	O
more	O
in	O
common	O
with	O
Microsoft	O
than	O
GM	O
,	O
AZFinText	B-General_Concept
studied	O
the	O
effect	O
of	O
varying	O
peer-based	O
training	O
sets	O
.	O
</s>
<s>
To	O
do	O
this	O
,	O
AZFinText	B-General_Concept
trained	O
on	O
the	O
various	O
levels	O
of	O
GICS	O
and	O
evaluated	O
the	O
results	O
.	O
</s>
<s>
AZFinText	B-General_Concept
was	O
also	O
compared	O
against	O
the	O
top	O
10	O
quantitative	O
systems	O
and	O
outperformed	O
6	O
of	O
them	O
.	O
</s>
<s>
Using	O
the	O
premise	O
that	O
past	O
winning	O
stocks	O
will	O
continue	O
to	O
win	O
and	O
past	O
losing	O
stocks	O
will	O
continue	O
to	O
lose	O
,	O
AZFinText	B-General_Concept
netted	O
a	O
20.79	O
%	O
return	O
during	O
the	O
study	O
period	O
.	O
</s>
<s>
Using	O
the	O
premise	O
that	O
an	O
author	O
can	O
unwittingly	O
influence	O
market	O
trades	O
simply	O
by	O
the	O
terms	O
they	O
use	O
,	O
AZFinText	B-General_Concept
was	O
tested	O
using	O
tone	O
and	O
polarity	O
features	O
.	O
</s>
<s>
AZFinText	B-General_Concept
has	O
been	O
the	O
topic	O
of	O
discussion	O
by	O
numerous	O
media	O
outlets	O
.	O
</s>
