<s>
Information	B-Application
Hyperlinked	I-Application
over	I-Application
Proteins	I-Application
(	O
or	O
iHOP	O
)	O
is	O
an	O
online	O
text	B-Algorithm
mining	I-Algorithm
service	O
that	O
provides	O
a	O
gene-guided	O
network	O
to	O
access	O
PubMed	B-Library
abstracts	O
.	O
</s>
<s>
The	O
concept	O
underlying	O
iHOP	O
is	O
that	O
by	O
using	O
genes	O
and	O
proteins	O
as	O
hyperlinks	O
between	O
sentences	O
and	O
abstracts	O
,	O
the	O
information	O
in	O
PubMed	B-Library
can	O
be	O
converted	O
into	O
one	O
navigable	O
resource	O
.	O
</s>
<s>
The	O
iHOP	O
factory	O
manages	O
the	O
PubMed	B-Library
source	O
data	O
(	O
text	O
and	O
gene	O
data	O
)	O
and	O
organises	O
it	O
within	O
a	O
PostgreSQL	B-Application
relational	O
database	O
.	O
</s>
<s>
The	O
iHOP	O
factory	O
also	O
produces	O
the	O
relevant	O
XML	B-Protocol
output	O
for	O
display	O
by	O
the	O
web	O
application	O
.	O
</s>
