<s>
Bayesian	B-Algorithm
inference	I-Algorithm
using	I-Algorithm
Gibbs	I-Algorithm
sampling	I-Algorithm
(	O
BUGS	B-Algorithm
)	O
is	O
a	O
statistical	B-Algorithm
software	I-Algorithm
for	O
performing	O
Bayesian	O
inference	O
using	O
Markov	B-General_Concept
chain	I-General_Concept
Monte	I-General_Concept
Carlo	I-General_Concept
(	O
MCMC	O
)	O
methods	O
.	O
</s>
<s>
The	O
BUGS	B-Algorithm
project	O
has	O
evolved	O
through	O
four	O
main	O
versions	O
:	O
ClassicBUGS	O
,	O
WinBUGS	B-Algorithm
,	O
OpenBUGS	B-Application
and	O
.	O
</s>
<s>
MultiBUGS	O
is	O
built	O
on	O
the	O
existing	O
algorithms	O
and	O
tools	O
in	O
OpenBUGS	B-Application
and	O
WinBUGS	B-Algorithm
,	O
which	O
are	O
no	O
longer	O
developed	O
,	O
and	O
implements	O
parallelization	B-Operating_System
to	O
speed	O
up	O
computation	O
.	O
</s>
<s>
Several	O
R	B-Language
packages	O
are	O
available	O
,	O
acts	O
as	O
an	O
interface	O
to	O
MultiBUGS	O
,	O
while	O
is	O
an	O
extension	O
of	O
the	O
BUGS	B-Algorithm
language	O
.	O
</s>
<s>
Alternative	O
implementations	O
of	O
the	O
BUGS	B-Algorithm
language	O
include	O
JAGS	B-Application
and	O
Stan	B-Application
.	O
</s>
