<s>
LIMDEP	B-Algorithm
is	O
an	O
econometric	O
and	O
statistical	B-Algorithm
software	I-Algorithm
package	O
with	O
a	O
variety	O
of	O
estimation	O
tools	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
core	O
econometric	O
tools	O
for	O
analysis	O
of	O
cross	O
sections	O
and	O
time	O
series	O
,	O
LIMDEP	B-Algorithm
supports	O
methods	O
for	O
panel	O
data	O
analysis	O
,	O
frontier	O
and	O
efficiency	O
estimation	O
and	O
discrete	O
choice	O
modeling	O
.	O
</s>
<s>
LIMDEP	B-Algorithm
was	O
first	O
developed	O
in	O
the	O
early	O
1980s	O
.	O
</s>
<s>
The	O
ongoing	O
development	O
of	O
LIMDEP	B-Algorithm
has	O
been	O
based	O
partly	O
on	O
interaction	O
and	O
feedback	O
from	O
users	O
and	O
from	O
the	O
collaboration	O
of	O
many	O
researchers	O
.	O
</s>
<s>
LIMDEP	B-Algorithm
is	O
used	O
by	O
researchers	O
in	O
universities	O
,	O
government	O
institutions	O
,	O
and	O
businesses	O
.	O
</s>
<s>
LIMDEP	B-Algorithm
has	O
spun	O
off	O
a	O
major	O
suite	O
of	O
programs	O
for	O
the	O
estimation	O
of	O
discrete	O
choice	O
models	O
,	O
NLOGIT	B-Algorithm
,	O
now	O
a	O
self	O
standing	O
superset	O
of	O
LIMDEP	B-Algorithm
.	O
</s>
<s>
The	O
native	O
save	O
format	O
(	O
LPJ	O
)	O
has	O
not	O
changed	O
since	O
the	O
release	O
of	O
the	O
Windows	B-Application
version	O
in	O
1997	O
.	O
</s>
<s>
LIMDEP	B-Algorithm
supports	O
a	O
list	O
server	O
based	O
discussion	O
group	O
.	O
</s>
<s>
There	O
are	O
model	O
formulations	O
for	O
linear	B-General_Concept
and	O
nonlinear	O
regression	O
,	O
robust	O
estimation	O
,	O
discrete	O
choice	O
(	O
including	O
binary	O
choice	O
,	O
ordered	O
choice	O
and	O
unordered	O
multinomial	O
choice	O
)	O
,	O
censoring	O
and	O
truncation	O
,	O
sample	O
selection	O
,	O
loglinear	O
models	O
,	O
survival	O
analysis	O
,	O
quantile	O
regression	O
(	O
linear	B-General_Concept
and	O
count	O
)	O
,	O
panel	O
data	O
,	O
stochastic	O
frontier	O
and	O
data	O
envelopment	O
analysis	O
,	O
count	O
data	O
,	O
and	O
time	O
series	O
.	O
</s>
<s>
Analysis	O
of	O
a	O
data	O
set	O
is	O
done	O
interactively	O
in	O
a	O
set	O
of	O
windows	B-Application
.	O
</s>
