[Limdep Nlogit List] Help to estimate equality constrained latent class model

[David Hensher]

These details are set out in the second edition of Hensher, Rose and 
Greene (2015) Applied Choice analysis, Cambridge Uni Press, pages 729-30.


David

On 17/03/2017 2:19 PM, S Tarfasa via Limdep wrote:
> Dear sir,
>
> Thank you for your help.
> I already got the solution.
>
>
> On 16 Mar 2017 11:16 pm, "Thomas Eagle"<teagle at tceagle.com>  wrote:
>
>    
>> Why do you want to constrain all parameters across 8 of the classes, set a
>> different to zero in the first 8, and all parameters to be zero in the last
>> class?  What kind of latent class model is that?  The purpose of a latent
>> class choice model is to find different groups of respondents who have
>> differing parameter values across classes?  Usually one fits an
>> unconstrained LC choice model and then imposes constraints to make the
>> model
>> more parsimonious.
>>
>> I can see some simplified constraints to force a type of mover-stayer
>> model,
>> but I cannot fathom the model you are trying to fit...
>>
>> Tom Eagle
>>
>> -----Original Message-----
>> From: Limdep [mailto:limdep-bounces at limdep.itls.usyd.edu.au] On Behalf Of
>> S
>> Tarfasa via Limdep
>> Sent: Thursday, March 16, 2017 2:33 PM
>> To: limdep at limdep.itls.usyd.edu.au
>> Cc: S Tarfasa<gutamajale at gmail.com>
>> Subject: [Limdep Nlogit List] Help to estimate equality constrained latent
>> class model
>>
>> Dear All,
>>
>> Would anyone help me estimate equality constraint latent class model as I
>> was challenged doing it?
>>
>> I have 9 classes where some respondents ignored one attribute,others all
>> attributes and the remaining ignored none.I keep getting error when I run
>> the following syntxa butI couldn't figure it out.
>> Any help is highly appreciated.
>>
>> Error   451: Expected  27 specifications in RST/CML list. Found  72.
>>    Error  1071: Found an error in your ;RST setup. Please check.
>>    Error  1071: Found an error in your ;RST setup. Please check.
>> Best,
>>
>>
>>
>>
>> LCLOGIT
>> ;LHS=CHOICE
>> ;CHOICES=1,2,3
>> ;MODEL:
>> U(1,2,3)=BPAY*PAYMENT+BCOV*COVER2+BCEM*CEME+BLAB*LABOR+
>> BCAP*CAP1000+BDUR*DUR
>> ATION+BRGVT*RGVT+ASC
>> ;PTS=9
>> ;PDS=10
>> ;rst=bpay,bcov,bcem,blab,bcap,bdur,brgvt,ASC,
>>       bpay,bcov,bcem,blab,bcap,bdur,0,ASC,
>>       bpay,bcov,bcem,blab,bcap,0,brgvt,ASC,
>>      bpay,bcov,bcem,blab,0,bdur,brgvt,ASC,
>>      bpay,bcov,bcem,0,bcap,bdur,brgvt,ASC,
>>      bpay,bcov,0,blab,bcap,bdur,brgvt,ASC,
>>      bpay,0,bcem,blab,bcap,bdur,brgvt,ASC,
>>      0,bcov,bcem,blab,bcap,bdur,brgvt,ASC,
>>      0,0,0,0,0,0,0,0$
>> _______________________________________________
>> Limdep site list
>> Limdep at limdep.itls.usyd.edu.au
>> http://limdep.itls.usyd.edu.au
>>
>>
>>      
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>    


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DAVID HENSHER FASSA, PhD| Professor and Founding Director
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