<s>
In	O
computing	O
,	O
Lhasa	B-Application
(	O
)	O
refers	O
to	O
two	O
different	O
applications	O
.	O
</s>
<s>
Lhasa	B-Application
is	O
a	O
Japanese	O
computer	B-Application
program	I-Application
used	O
to	O
"	O
unpack	O
"	O
or	O
decompress	O
compressed	B-General_Concept
files	O
in	O
LHA	B-Application
,	O
ZIP	B-General_Concept
,	O
and	O
other	O
formats	O
.	O
</s>
<s>
It	O
is	O
also	O
the	O
name	O
of	O
a	O
computer	B-Application
program	I-Application
developed	O
in	O
the	O
research	O
group	O
of	O
Elias	O
James	O
Corey	O
at	O
the	O
Harvard	O
University	O
Department	O
of	O
Chemistry	O
which	O
uses	O
AI	B-Application
techniques	O
to	O
discover	O
sequences	O
of	O
reactions	O
which	O
may	O
be	O
used	O
to	O
synthesize	O
a	O
compound	O
.	O
</s>
<s>
LHASA	B-Application
in	O
this	O
case	O
is	O
an	O
acronym	O
for	O
Logic	O
and	O
Heuristics	O
Applied	O
to	O
Synthetic	O
Analysis	O
.	O
</s>
