<s>
The	O
CLEVER	B-Application
project	I-Application
was	O
a	O
research	O
project	O
in	O
Web	B-Application
search	I-Application
led	O
by	O
Jon	O
Kleinberg	O
at	O
IBM	O
's	O
Almaden	O
Research	O
Center	O
.	O
</s>
<s>
Techniques	O
developed	O
in	O
CLEVER	O
included	O
various	O
forms	O
of	O
link	B-Application
analysis	I-Application
,	O
including	O
the	O
HITS	B-Application
algorithm	I-Application
.	O
</s>
<s>
The	O
CLEVER	B-Application
search	I-Application
engine	I-Application
incorporates	O
several	O
algorithms	O
that	O
make	O
use	O
of	O
the	O
Web	O
's	O
hyperlink	O
structure	O
for	O
discovering	O
high-quality	O
information	O
.	O
</s>
<s>
Second	O
generation	O
search	B-Application
engines	I-Application
have	O
to	O
have	O
effective	O
methods	O
for	O
focusing	O
on	O
the	O
most	O
authoritative	O
documents	O
.	O
</s>
<s>
Members	O
of	O
the	O
Clever	B-Application
project	I-Application
have	O
come	O
up	O
with	O
a	O
mathematical	O
algorithm	O
that	O
views	O
the	O
Net	O
as	O
simply	O
web	O
pages	O
pointing	O
at	O
each	O
other	O
.	O
</s>
<s>
Bill	O
Cody	O
,	O
senior	O
manager	O
of	O
exploratory	O
data	O
management	O
research	O
at	O
IBM	O
's	O
Almaden	O
Research	O
Center	O
,	O
said	O
:	O
"	O
Web	B-Application
searches	I-Application
provide	O
a	O
lot	O
of	O
information	O
,	O
some	O
good	O
,	O
some	O
bad	O
.	O
</s>
<s>
About	O
two	O
thirds	O
of	O
these	O
still	O
existed	O
,	O
he	O
claimed	O
,	O
with	O
about	O
half	O
now	O
appearing	O
on	O
Yahoo	B-Application
as	O
mature	O
communities	O
.	O
</s>
