[Limdep Nlogit List] Equality constrained latent class model

[Damien Jourdain]

Dear Solomon, 

As far as I understand, you can either use the 2K formulation (well
explained in the manual), or use a more flexible approach of imposing the
constraints you deem necessary on the coefficients. 

The second solution is more flexible as you can impose different constraints
on which of the coefficients should be zero in which class. You can even
decide some classes ignore 2 or more attributes at the same time.

I understand the two approaches are equivalent, but this needs to be
confirmed by the developers?

Here is an example with my own variables:

LCLOGIT
    ; Choices = 1,2,3
    ; Lhs = CHOICE
    ; Rhs = pay, mosq, waste, trail, quiet, fecos, asc
    ; Pds = csi
    ;   Pts =9
    ; Rst = 
pay, mosq, waste, trail, quiet, fecos, asc,
0, mosq, waste, trail, quiet, fecos, asc,
pay,0, waste, trail, quiet, fecos, asc,
pay, mosq, 0, trail, quiet, fecos, asc,
pay, mosq, waste, 0, quiet, fecos, asc,
pay, mosq, waste, trail, 0, fecos, asc,
pay, mosq, waste, trail, quiet, 0, asc,
pay, mosq, waste, trail, quiet, fecos, 0,
0, 0, 0, 0, 0, 0, 0
$

I hope this helps.  

Damien Jourdain
Asian Institute of Technology.




-----Message d'origine-----
De : Limdep [mailto:limdep-bounces at limdep.itls.usyd.edu.au] De la part de S
Tarfasa via Limdep
Envoyé : Thursday, March 16, 2017 12:58 PM
À : limdep at limdep.itls.usyd.edu.au
Cc : S Tarfasa
Objet : [Limdep Nlogit List] Equality constrained latent class model

Dear all,

I need your help on how to estimate attribute non-attendance using equality
constraint latent class model.I have seven variables(6 attributes and a
monetary variable) i.e., X1,X2,X3,X4,X5,X6 and X7.


I have 9 classes to use(PTs=103).

class 1 none of the attributes igored
X1 is ignored
X2 is ignored
X3 is ignored
X4 is ignored
X5 is ignore
X6 is ignored
X7 is ignored
all is ignored.

Constraining the coefficients of the ignored attributes/price,how do put the
syntax using NLOGIT 5.?

Thank you in advance for your help
Solomon Tarfasa
Assistant professor
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