<s>
Multi-document	B-General_Concept
summarization	I-General_Concept
is	O
an	O
automatic	O
procedure	O
aimed	O
at	O
extraction	B-General_Concept
of	I-General_Concept
information	I-General_Concept
from	O
multiple	O
texts	O
written	O
about	O
the	O
same	O
topic	O
.	O
</s>
<s>
In	O
such	O
a	O
way	O
,	O
multi-document	B-General_Concept
summarization	I-General_Concept
systems	O
are	O
complementing	O
the	O
news	B-Application
aggregators	I-Application
performing	O
the	O
next	O
step	O
down	O
the	O
road	O
of	O
coping	O
with	O
information	O
overload	O
.	O
</s>
<s>
Multi-document	B-General_Concept
summarization	I-General_Concept
creates	O
information	O
reports	O
that	O
are	O
both	O
concise	O
and	O
comprehensive	O
.	O
</s>
<s>
In	O
fact	O
,	O
it	O
is	O
almost	O
impossible	O
to	O
achieve	O
clear	O
extractive	B-Application
summarization	I-Application
of	O
documents	O
with	O
conflicting	O
views	O
.	O
</s>
<s>
The	O
multi-document	B-General_Concept
summarization	I-General_Concept
task	O
is	O
more	O
complex	O
than	O
summarizing	B-Application
a	I-Application
single	I-Application
document	I-Application
,	O
even	O
a	O
long	O
one	O
.	O
</s>
<s>
The	O
Document	O
Understanding	O
Conferences	O
,	O
conducted	O
annually	O
by	O
NIST	O
,	O
have	O
developed	O
sophisticated	O
evaluation	O
criteria	O
for	O
techniques	O
accepting	O
the	O
multi-document	B-General_Concept
summarization	I-General_Concept
challenge	O
.	O
</s>
<s>
An	O
ideal	O
multi-document	B-General_Concept
summarization	I-General_Concept
system	O
not	O
only	O
shortens	O
the	O
source	O
texts	O
,	O
but	O
also	O
presents	O
information	O
organized	O
around	O
the	O
key	O
aspects	O
to	O
represent	O
diverse	O
views	O
.	O
</s>
<s>
no	O
semantic	O
redundancy	B-General_Concept
.	O
</s>
<s>
The	O
multi-document	B-General_Concept
summarization	I-General_Concept
technology	O
is	O
now	O
coming	O
of	O
age	O
-	O
a	O
view	O
supported	O
by	O
a	O
choice	O
of	O
advanced	O
web-based	O
systems	O
that	O
are	O
currently	O
available	O
.	O
</s>
<s>
Ultimate	O
Research	O
Assistant	O
-	O
performs	O
text	B-Algorithm
mining	I-Algorithm
on	O
Internet	O
search	O
results	O
to	O
help	O
summarize	O
and	O
organize	O
them	O
and	O
make	O
it	O
easier	O
for	O
the	O
user	O
to	O
perform	O
online	O
research	O
.	O
</s>
<s>
Specific	O
text	B-Algorithm
mining	I-Algorithm
techniques	O
used	O
by	O
the	O
tool	O
include	O
concept	O
extraction	O
,	O
text	B-Application
summarization	I-Application
,	O
hierarchical	O
concept	O
clustering	O
(	O
e.g.	O
,	O
automated	O
taxonomy	O
generation	O
)	O
,	O
and	O
various	O
visualization	O
techniques	O
,	O
including	O
tag	O
clouds	O
and	O
mind	O
maps	O
.	O
</s>
<s>
iResearch	O
Reporter	O
-	O
Commercial	O
Text	O
Extraction	O
and	O
Text	B-Application
Summarization	I-Application
system	O
,	O
free	O
demo	O
site	O
accepts	O
user-entered	O
query	O
,	O
passes	O
it	O
on	O
to	O
Google	O
search	O
engine	O
,	O
retrieves	O
multiple	O
relevant	O
documents	O
,	O
produces	O
categorized	O
,	O
easily	O
readable	O
natural	O
language	O
summary	O
reports	O
covering	O
multiple	O
documents	O
in	O
retrieved	O
set	O
,	O
all	O
extracts	O
linked	O
to	O
original	O
documents	O
on	O
the	O
Web	O
,	O
post-processing	O
,	O
entity	O
extraction	O
,	O
event	O
and	O
relationship	O
extraction	O
,	O
text	O
extraction	O
,	O
extract	O
clustering	O
,	O
linguistic	O
analysis	O
,	O
multi-document	O
,	O
full	O
text	O
,	O
natural	O
language	O
processing	O
,	O
categorization	O
rules	O
,	O
clustering	O
,	O
linguistic	O
analysis	O
,	O
text	O
summary	O
construction	O
tool	O
set	O
.	O
</s>
<s>
The	O
system	O
automatically	O
collects	O
,	O
clusters	O
,	O
categorizes	O
,	O
and	O
summarizes	O
news	O
from	O
several	O
sites	O
on	O
the	O
web	O
(	O
CNN	B-Architecture
,	O
Reuters	O
,	O
Fox	O
News	O
,	O
etc	O
.	O
)	O
</s>
<s>
NewsFeed	B-Application
Researcher	O
is	O
a	O
news	O
portal	O
performing	O
continuous	O
automatic	B-Application
summarization	I-Application
of	O
documents	O
initially	O
clustered	O
by	O
the	O
news	B-Application
aggregators	I-Application
(	O
e.g.	O
,	O
Google	B-Application
News	I-Application
)	O
.	O
</s>
<s>
NewsFeed	B-Application
Researcher	O
is	O
backed	O
by	O
a	O
free	O
online	O
engine	O
covering	O
major	O
events	O
related	O
to	O
business	O
,	O
technology	O
,	O
U.S.	O
and	O
international	O
news	O
.	O
</s>
