Segmentation and simulation

[Philipp Theile]

Dear Biogeme-group,

I have defined a catalog of model specifications for my application, which helps me to obtain coefficients for different segments of my data.

In a next step, I would like to simulate probabilities of product choices within each segment. Would it be possible to apply the simulate command of biogeme to segmented data? Or do I have to consider anything special, i.e., updating the Variable dictionary explicitly to also contain the segmented coefficients? I could not find an example of combined segmentation and simulation in the gallery of examples.

Thank you very much and kind regards

Philipp Theile

[Michel Bierlaire]

You can simulate the same expressions as the one you have used for estimation.
A segmentation is nothing else than a valid biogeme expression.
In order to test your simulator, try to recalculate the final loglikelihood using simulation.
It is a good way to test your implementation before simulating other things.

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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