<s>
The	O
Web	B-Library
of	I-Library
Science	I-Library
(	O
WoS	O
;	O
previously	O
known	O
as	O
Web	B-Library
of	I-Library
Knowledge	I-Library
)	O
is	O
a	O
paid-access	O
platform	O
that	O
provides	O
(	O
typically	O
via	O
the	O
internet	O
)	O
access	O
to	O
multiple	O
databases	O
that	O
provide	O
reference	O
and	O
citation	O
data	O
from	O
academic	O
journals	O
,	O
conference	O
proceedings	O
,	O
and	O
other	O
documents	O
in	O
various	O
academic	O
disciplines	O
.	O
</s>
<s>
Eugene	O
Garfield	O
,	O
the	O
"	O
father	O
of	O
citation	O
indexing	O
of	O
academic	O
literature	O
,	O
"	O
who	O
launched	O
the	O
Science	B-Library
Citation	I-Library
Index	I-Library
,	O
which	O
in	O
turn	O
led	O
to	O
the	O
Web	B-Library
of	I-Library
Science	I-Library
,	O
wrote	O
:	O
</s>
<s>
Web	B-Library
of	I-Library
Science	I-Library
is	O
described	O
as	O
a	O
unifying	O
research	O
tool	O
that	O
enables	O
the	O
user	O
to	O
acquire	O
,	O
analyze	O
,	O
and	O
disseminate	O
database	O
information	O
in	O
a	O
timely	O
manner	O
.	O
</s>
<s>
Acceptable	O
content	O
for	O
Web	B-Library
of	I-Library
Science	I-Library
is	O
determined	O
by	O
an	O
evaluation	O
and	O
selection	O
process	O
based	O
on	O
the	O
following	O
criteria	O
:	O
impact	O
,	O
influence	O
,	O
timeliness	O
,	O
peer	O
review	O
,	O
and	O
geographic	O
representation	O
.	O
</s>
<s>
Web	B-Library
of	I-Library
Science	I-Library
employs	O
various	O
search	O
and	O
analysis	O
capabilities	O
.	O
</s>
<s>
Expanding	O
the	O
coverage	O
of	O
Web	B-Library
of	I-Library
Science	I-Library
,	O
in	O
November	O
2009	O
Thomson	O
Reuters	O
introduced	O
Century	O
of	O
Social	O
Sciences	O
.	O
</s>
<s>
This	O
service	O
contains	O
files	O
which	O
trace	O
social	O
science	O
research	O
back	O
to	O
the	O
beginning	O
of	O
the	O
20th	O
century	O
,	O
and	O
Web	B-Library
of	I-Library
Science	I-Library
now	O
has	O
indexing	O
coverage	O
from	O
the	O
year	O
1900	O
to	O
the	O
present	O
.	O
</s>
<s>
,	O
the	O
multidisciplinary	O
coverage	O
of	O
the	O
Web	B-Library
of	I-Library
Science	I-Library
encompasses	O
12,000	O
high	O
impact	O
journals	O
and	O
160,000	O
conference	O
proceedings	O
.	O
</s>
<s>
However	O
,	O
Web	B-Library
of	I-Library
Science	I-Library
does	O
not	O
index	O
all	O
journals	O
.	O
</s>
<s>
Furthermore	O
,	O
as	O
of	O
September	O
3	O
,	O
2014	O
the	O
total	O
file	O
count	O
of	O
the	O
Web	B-Library
of	I-Library
Science	I-Library
was	O
90	O
million	O
records	O
,	O
which	O
included	O
over	O
a	O
billion	O
cited	O
references	O
.	O
</s>
<s>
In	O
2018	O
,	O
the	O
Web	B-Library
of	I-Library
Science	I-Library
started	O
embedding	O
partial	O
information	O
about	O
the	O
open	O
access	O
status	O
of	O
works	O
,	O
using	O
Unpaywall	O
data	O
.	O
</s>
<s>
After	O
the	O
2022	O
Russian	O
invasion	O
of	O
Ukraine	O
,	O
on	O
March	O
11	O
,	O
2022	O
,	O
Clarivate	O
–	O
which	O
owns	O
Web	B-Library
of	I-Library
Science	I-Library
–	O
announced	O
that	O
it	O
would	O
cease	O
all	O
commercial	O
activity	O
in	O
Russia	O
and	O
immediately	O
close	O
an	O
office	O
there	O
.	O
</s>
<s>
The	O
Web	B-Library
of	I-Library
Science	I-Library
Core	O
Collection	O
consists	O
of	O
six	O
online	O
indexing	O
databases	O
:	O
</s>
<s>
Science	B-Library
Citation	I-Library
Index	I-Library
Expanded	I-Library
(	O
SCIE	O
)	O
-previously	O
entitled	O
Science	B-Library
Citation	I-Library
Index	I-Library
-	O
covers	O
more	O
than	O
9,200	O
journals	O
across	O
178	O
scientific	O
disciplines	O
.	O
</s>
<s>
Social	B-Library
Sciences	I-Library
Citation	I-Library
Index	I-Library
(	O
SSCI	O
)	O
covers	O
more	O
than	O
3,400	O
journals	O
in	O
the	O
social	O
sciences	O
.	O
</s>
<s>
Arts	B-Library
&	I-Library
Humanities	I-Library
Citation	I-Library
Index	I-Library
(	O
AHCI	O
)	O
covers	O
more	O
than	O
1,800	O
journals	O
in	O
the	O
arts	O
and	O
humanities	O
.	O
</s>
<s>
Emerging	B-Library
Sources	I-Library
Citation	I-Library
Index	I-Library
(	O
ESCI	O
)	O
covers	O
more	O
than	O
7,800	O
journals	O
in	O
all	O
disciplines	O
.	O
</s>
<s>
Book	B-Library
Citation	I-Library
Index	I-Library
(	O
BCI	O
)	O
covers	O
more	O
than	O
116,000	O
editorially	O
selected	O
books	O
.	O
</s>
<s>
Since	O
2008	O
,	O
the	O
Web	B-Library
of	I-Library
Science	I-Library
hosts	O
a	O
number	O
of	O
regional	O
citation	O
indices	O
:	O
</s>
<s>
Two	O
chemistry	O
databases	O
,	O
Index	O
Chemicus	O
and	O
Current	B-Library
Chemical	I-Library
Reactions	I-Library
allow	O
for	O
the	O
creation	O
of	O
structure	O
drawings	O
,	O
thus	O
enabling	O
users	O
to	O
locate	O
chemical	O
compounds	O
and	O
reactions	O
.	O
</s>
<s>
Among	O
other	O
WoS	O
databases	O
are	O
BIOSIS	O
and	O
The	B-Library
Zoological	I-Library
Record	I-Library
,	O
an	O
electronic	B-Library
index	I-Library
of	O
zoological	O
literature	O
that	O
also	O
serves	O
as	O
the	O
unofficial	O
register	O
of	O
scientific	O
names	O
in	O
zoology	O
.	O
</s>
<s>
Web	B-Library
of	I-Library
Science	I-Library
includes	O
other	O
products	O
providing	O
data	O
,	O
analytics	O
,	O
insights	O
,	O
workflow	O
tools	O
,	O
and	O
professional	O
services	O
to	O
researchers	O
,	O
universities	O
,	O
research	O
institutions	O
,	O
governments	O
,	O
private	O
and	O
public	O
research	O
funding	O
organizations	O
,	O
publishers	O
,	O
and	O
research-intensive	O
corporations	O
.	O
</s>
<s>
In	O
2010	O
,	O
a	O
criticism	O
was	O
voiced	O
pointing	O
toward	O
certain	O
deficiencies	O
of	O
the	O
journal	O
impact	O
factor	O
calculation	O
process	O
,	O
based	O
on	O
Thomson	O
Reuters	O
Web	B-Library
of	I-Library
Science	I-Library
,	O
such	O
as	O
:	O
journal	O
citation	O
distributions	O
usually	O
are	O
highly	O
skewed	O
towards	O
established	O
journals	O
;	O
journal	O
impact	O
factor	O
properties	O
are	O
field-specific	O
and	O
can	O
be	O
easily	O
manipulated	O
by	O
editors	O
,	O
or	O
even	O
by	O
changing	O
the	O
editorial	O
policies	O
;	O
this	O
makes	O
the	O
entire	O
process	O
essentially	O
non-transparent	O
.	O
</s>
