My first model with Biogeme

[Mladen Zamanov]

Hello, 

I am working on my first mode choice model with Biogeme. 

I have prepared the data according to the requirements and configured the model in Google Colab as shown in the videos. I have 5 modes (public transport, car driver, car passenger, bike and walking) and about 8200 samples. For all of them I have the travel time, as well as the number of transfers for the public transport. 

When I run the model in the end I get a result where all betas and constants are 0. 

This is the short summary of the results:

Results for model 01logit Nbr of parameters: 7 Sample size: 8260 Excluded data: 0 Final log likelihood: -1.797693e+308 Akaike Information Criterion: inf Bayesian Information Criterion: inf

Could you please help me find what I am doing wrong? 

Best regards,

Mladen 

[Michel Bierlaire]

Difficult to guess. You need to share your code.

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Michel Bierlaire
Transport and Mobility Laboratory
School of Architecture, Civil and Environmental Engineering
EPFL - Ecole Polytechnique Fédérale de Lausanne
http://transp-or.epfl.ch
http://people.epfl.ch/michel.bierlaire