Re: request for assistance - NL

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Bierlaire Michel

Aug 11, 2022, 3:14:23 AMAug 11
to Taghavi, Mehdi, Bierlaire Michel, Biogeme

On 11 Aug 2022, at 02:38, Taghavi, Mehdi <> wrote:

Hello Professor Bierlaire,
We were hoping to use biogeme for estimating a multi-level nested logit model for the mode choice and came across a problem on how to represent the choice tree in Biogeme.

Reading other posts in the forum, I realised we might need to approximate our structure using a cross-nested model instead.

Indeed. It is easier and more appropriate to use a cross-nested logit model, instead of a multi-level nested logit. 
The multi-level nested logit requires you to code the probability function of the MEV model, which may be quite technical.

I have posted my question on the forum page (here) but haven’t received much help. Do you think the forum was the best place for this type of question, or should I use other avenues for help on my question?

The forum is the right place, although it is not guaranteed that you’ll receive a response. 
Look also at the examples provided online. This is usually the best way to proceed. 

Any direction from your side would be much appreciated.
Kind Regards
Mehdi (Matt) Taghavi, M.Eng MIEAust | Jacobs | Associate Transport Modeller
Asia Pacific – People and Places Solutions
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