[Limdep Nlogit List] Joint logit Model in Nlogit

[Behram Wali]

Minal, by joint model, do you mean to refer to simultaneous estimation of the two MNL models, one for residential location choice and one for travel mode? If this is what you mean, I don’t think this is pre-coded in NLOGIT. Others may comment. You will have to code the joint model yourself. 

One naive way of modeling the joint behavior through a single MNL would be to define the choice sets in a way that considers both of the choice-sets. Say you have two residential location types (conventional and neo-traditional) and three modes (bus, car, shared), you can define distinct choice sets for each combination of the alternatives in two choice-sets. E.g., 1 if location == conventional AND mode == bus, 2 if location == conventional AND mode == shared, 3 if location == neo AND mode == bus, and so on. And then estimate an MNL with these new choice sets as alternatives. 

Best, -wali

> On Sep 10, 2018, at 2:25 PM, minal srivastava via Limdep <limdep at mailman.sydney.edu.au> wrote:
> 
> Dear All, 
> 
> In case of forming a joint logit model for residential location choice and travel mode choice, how should my data format look like.
> I know for a MNL model or a Nested logit model, for each observation I need to convert to long data format ( depending upon the number of choice alternative). For e.g. for 100 observations with 5 travel mode choices, the total number of data input lines would be (5*100) =500. 
> 
> But in case of joint logit model, If I have 3 location choice alternatives and 5 travel mode choice alternative how should I prepare my data input file? Am I supposed to use two different data files, one with (3*100) 300 input lines and other with (5*100) 500 input lines?
> 
> Looking forward to your kind reply. 
> 
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