[Limdep Nlogit List] Questions about LCA for ordered probit model

[Yan]

Great! It works! Thanks so much Professor Greene!

On Wed, Aug 28, 2019 at 5:48 PM William Greene via Limdep <
limdep at mailman.sydney.edu.au> wrote:

> You need to run the base model before each time you run the LC model.
> The latent class model should consist of these two commands
>
> ordered ; Lhs=depen   ; Rhs=one, AGE,RACEWHIT, STUDENTS, MALE  $
> ordered ; Lhs=depen   ; Rhs=one, AGE,RACEWHIT, STUDENTS, MALE
>                ; LCM=TRAVELWA, TRAVELCO, ENVENERG, LIKEDRIV,
>            LIKERIDE, LIKETRAN, LIKEBIKE, LIKEWALK, WORRYOUT, LIKESHUT
>                 ; Pts=2$
>
> -----------------------------------------------------------------------------------------------------------------
>
> On Wed, Aug 28, 2019 at 8:35 PM Yan via Limdep <
> limdep at mailman.sydney.edu.au>
> wrote:
>
> > Hi! Can anyone help me with the following problem I met when doing LCA
> for
> > an ordered probit model?
> >
> > "depen" is an ordered variable with the value range from 0 to 4.
> >
> > I ran same codes for many times. Most of time, I got outputs like shown
> in
> > (1), but twice I got outputs like (2). Both the codes and data are
> exactly
> > the same!! Why did this happen? Should a start value be given to compute
> > function(Error 802)? How can I get results like (2) steadily? Many
> thanks!
> >
> > (1) |-> ordered ; Lhs=depen
> >
> >     ; Rhs=one, AGE,RACEWHIT, STUDENTS, MALE
> >
> >     ; LCM=TRAVELWA, TRAVELCO, ENVENERG, LIKEDRIV,
> >
> >     LIKERIDE, LIKETRAN, LIKEBIKE, LIKEWALK, WORRYOUT, LIKESHUT
> >
> >     ; Pts=2$
> >
> >
> >
> > ---------------------------------------------------------------
> >
> > Deleted     14 observations with missing data. N is now    162
> >
> > ---------------------------------------------------------------
> >
> > Warning   43: ORDERED PROBIT - Current estimated thresholds  not ordered.
> >
> > Error    802: Cannot compute function at start values. Exit status=4.
> >
> > Function value was   .1951595121D+03 at entry -----------
> >
> >                      .1581983858D+03 at exit  -----------
> >
> >  (2)
> >
> > |-> ordered ; Lhs=depen
> >
> >     ; Rhs=one, AGE,RACEWHIT, STUDENTS, MALE
> >
> >     ; LCM=TRAVELWA, TRAVELCO, ENVENERG, LIKEDRIV,
> >
> >     LIKERIDE, LIKETRAN, LIKEBIKE, LIKEWALK, WORRYOUT, LIKESHUT
> >
> >     ; Pts=2$
> >
> >
> >
> > ---------------------------------------------------------------
> >
> > Deleted     14 observations with missing data. N is now    162
> >
> > ---------------------------------------------------------------
> >
> > Warning   43: ORDERED PROBIT - Current estimated thresholds  not ordered.
> >
> > Warning   43: ORDERED PROBIT - Current estimated thresholds  not ordered.
> >
> > Warning   43: ORDERED PROBIT - Current estimated thresholds  not ordered.
> >
> > Warning   43: ORDERED PROBIT - Current estimated thresholds  not ordered.
> >
> > Line search at iteration 33 does not improve the function
> >
> > Exiting optimization
> >
> >
> >
> >
> >
> -----------------------------------------------------------------------------
> >
> > Latent Class / Panel OrdProbs Model
> >
> > Dependent variable                DEPEN
> >
> > Log likelihood function      -158.19839
> >
> > Estimation based on N =    176, K =  27
> >
> > Inf.Cr.AIC  =    370.4 AIC/N =    2.105
> >
> > Sample is  1 pds and    176 individuals
> >
> > Latent class model with 2 latent classes
> >
> > Missing data: Skipped       14 individuals.
> >
> > Ordered probability model
> >
> > Ordered probit (normal) model
> >
> > LHS variable = values 0,1,..., 4
> >
> >
> >
> --------+--------------------------------------------------------------------
> >
> >         |                  Standard            Prob.      95% Confidence
> >
> >    DEPEN|  Coefficient       Error       z    |z|>Z*         Interval
> >
> >
> >
> --------+--------------------------------------------------------------------
> >
> >         |Model parameters for latent class
> > 1.................................
> >
> > Constant|    5.29996      .3857D+07      .00 1.0000 ***********
> > ***********
> >
> >      AGE|     .08170         .12721      .64  .5208     -.16764    .33103
> >
> > RACEWHIT|    -.23151         .86430     -.27  .7888    -1.92550   1.46248
> >
> > STUDENTS|   -4.86029      .3857D+07      .00 1.0000 ***********
> > ***********
> >
> >     MALE|   -2.08153        3.67508     -.57  .5711    -9.28456   5.12150
> >
> >   Mu(01)|   -5.84096      .1474D+08      .00 1.0000 ***********
> > ***********
> >
> >   Mu(02)|   -2.54470       14.21718     -.18  .8579   -30.40986  25.32045
> >
> >   Mu(03)|    -.61230         .81213     -.75  .4509    -2.20406    .97945
> >
> >         |Model parameters for latent class
> > 2.................................
> >
> > Constant|    4.85715***     1.19866     4.05  .0001     2.50781   7.20649
> >
> >      AGE|    -.05742**       .02492    -2.30  .0212     -.10626   -.00858
> >
> > RACEWHIT|    -.72129**       .31729    -2.27  .0230    -1.34317   -.09941
> > ................................
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> >
> >
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