[Limdep Nlogit List] Nlogit ;pds
mahsataslimi at gmail.com
Fri Dec 20 05:52:15 AEDT 2019
Thanks, Dr. Greene for replaying.
I have two more questions left, I have 98 individuals and 8 choice cards
and 3 alternatives in each choice cards and 2352 rows. all Data are the
I am using RPLOGIT, LCLOGIT, and LCRPLOGIT commands in the NLOGIT. based on
your comment, I should use;pds=8. is it right?
But in LCRPLOGIT the results of estimation says that the N=784, fixed
number of observations is 2, the lcm model with panel 392 groups and the
WTP are for 392 groups. how should I interpret 392? I don't know what is it?
On Thu, Dec 19, 2019 at 9:28 PM William Greene via Limdep <
limdep at mailman.sydney.edu.au> wrote:
> Mahsa. For commands that have verb NLOGIT, the ;PDS is the number of
> tasks. One of my data sets has 12,800 rows of data. There are 400
> individuals in
> the sample. Each individual faces 8 choice tasks. Each choice task
> involves 4
> alternatives. So, the number of choice tasks in the data set is 12,800/4 =
> For purposes of "panel data," the PDS for NLOGIT commands would be ;Pds=8.
> Note that ;PDS for other commands such as PROBIT would be Pds=32, but of
> this is wrong for multinomial choice data.
> /B. Greene
> On Thu, Dec 19, 2019 at 11:50 AM Mahsa Taslimi via Limdep <
> limdep at mailman.sydney.edu.au> wrote:
> > Hi
> > I am estimating RPL, LC, and LC-RPL models. I have a question about the
> > observation and sample size.
> > h have 2352 observations which are 784 in Nlogit. and the RpL got ; PDS
> > the fixed variable or the grouping.
> > the estimation says I have 784 observations and the RPL or LC models got
> > groups and 2= pds. actually the WTP wil be 392 rows. what is this 392? is
> > it the observations? or what?
> > How does it work? i am learning it by myself. can anyone help me with
> > Thanks
> > Mahsa
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> William Greene
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