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Welcome to the users group for Biogeme. Submit your questions, comments, suggestions. Please take the time as well to respond to other users questions.

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aaditya bhamidipati, Bierlaire Michel2

6/22/20

premature temination

Why did you fix the sigma's to 1? On 21 Jun 2020, at 13:20, aaditya bhamidipati <aadityabh12@

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premature temination

Why did you fix the sigma's to 1? On 21 Jun 2020, at 13:20, aaditya bhamidipati <aadityabh12@

6/22/20

zh.kev...@gmail.com, Jason Hawkins2

3/9/20

Choice model based on revealed preference is under certainty, risk or uncertainty

Hi Kevin, You are correct that the error term generally refers to uncertainty on the part of the

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Choice model based on revealed preference is under certainty, risk or uncertainty

Hi Kevin, You are correct that the error term generally refers to uncertainty on the part of the

3/9/20

Valeriy, Ercan Kurtuluş2

7/11/19

Estimation the random heterogeneity model

It appears that you defined same error component for each alternative. You should define different

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Estimation the random heterogeneity model

It appears that you defined same error component for each alternative. You should define different

7/11/19

View more pinned conversations

Sep 29

Handling Nested Logit with Varying Availability in Ranked Choice Data

Dear Professor Bierlaire, I hope you are doing well. I am working on a choice model with five

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Handling Nested Logit with Varying Availability in Ranked Choice Data

Dear Professor Bierlaire, I hope you are doing well. I am working on a choice model with five

Sep 29

Tariq Naveed, Michel Bierlaire3

Sep 9

Memory Allocating Error

Thanks a lot. Yours sincerely, Tariq Naveed PhD student University of Cagliari On Tue, Sep 9, 2025 at

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Memory Allocating Error

Thanks a lot. Yours sincerely, Tariq Naveed PhD student University of Cagliari On Tue, Sep 9, 2025 at

Sep 9

Aug 23

Multinomial Logit Model - Unexpected Estimated Parameter Results

Hello, I've developed a multinomial logit model that estimates a coefficient for time (delivery

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Multinomial Logit Model - Unexpected Estimated Parameter Results

Hello, I've developed a multinomial logit model that estimates a coefficient for time (delivery

Aug 23

YQ WANG, Michel Bierlaire3

Aug 7

Question Regarding Multi-Level Nested Logit Model Specification in Biogeme

Multi-level nested logit are not implemented as such in biogeme, because they are not useful. You

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Question Regarding Multi-Level Nested Logit Model Specification in Biogeme

Multi-level nested logit are not implemented as such in biogeme, because they are not useful. You

Aug 7

AKINFILOYE EBENEZER, Michel Bierlaire2

Aug 6

Swissmetro Dataset

All data sets are available here: https://biogeme.epfl.ch/#data Swissmetro is also distributed with

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Swissmetro Dataset

All data sets are available here: https://biogeme.epfl.ch/#data Swissmetro is also distributed with

Aug 6

YQ WANG, Michel Bierlaire2

Aug 4

numerical issues

If those are only warnings you can ignore them. But make sure to verify that the final solution makes

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numerical issues

If those are only warnings you can ignore them. But make sure to verify that the final solution makes

Aug 4

Ali Karami, Michel Bierlaire2

Aug 4

Question on Threshold Parameter Specification in Hybrid Choice Model in Biogeme

Usually, the set of thresholds is the same across indicators, as the measurement equations are meant

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Question on Threshold Parameter Specification in Hybrid Choice Model in Biogeme

Usually, the set of thresholds is the same across indicators, as the measurement equations are meant

Aug 4

Jul 31

Request for Guidance on Hybrid Choice Model Implementation in Python Biogeme

Dear Prof. Bierlaire, I hope this email finds you well. First of all, I would like to sincerely thank

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Request for Guidance on Hybrid Choice Model Implementation in Python Biogeme

Dear Prof. Bierlaire, I hope this email finds you well. First of all, I would like to sincerely thank

Jul 31

Sourav Kr Mandal, Michel Bierlaire2

Jul 16

Large Parameters estimation in Latent Class Choice Model

> On 15 Jul 2025, at 20:39, Sourav Kr Mandal <mandals...@gmail.com> wrote: > >

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Large Parameters estimation in Latent Class Choice Model

> On 15 Jul 2025, at 20:39, Sourav Kr Mandal <mandals...@gmail.com> wrote: > >

Jul 16

Jul 1

Discrete Choice Model (0,1)

I have been trying to use Biogeme library to model the discrete Choice model between 2 options (

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Discrete Choice Model (0,1)

I have been trying to use Biogeme library to model the discrete Choice model between 2 options (

Jul 1

Natchaphon Leungbootnak, Michel Bierlaire4

Jun 28

Calculation of Class Membership in Latent Class Logit Model

If you want to guess the class from the data (that is, both the independent variables and the choice)

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Calculation of Class Membership in Latent Class Logit Model

If you want to guess the class from the data (that is, both the independent variables and the choice)

Jun 28

Chris ten Dam, Michel Bierlaire3

Jun 14

1.8E+308 stds with loglikelihoodregression models

> On 14 Jun 2025, at 09:16, Chris ten Dam <chrisdjie...@gmail.com> wrote: > >

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1.8E+308 stds with loglikelihoodregression models

> On 14 Jun 2025, at 09:16, Chris ten Dam <chrisdjie...@gmail.com> wrote: > >

Jun 14

May 20

Ordered Logit Model with Panel Data in BIOGEME

Dear Prof. Bierlaire and BIOGEME community, I am a M.Sc. Engg. student. I've designed a stated

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Ordered Logit Model with Panel Data in BIOGEME

Dear Prof. Bierlaire and BIOGEME community, I am a M.Sc. Engg. student. I've designed a stated

May 20

Osama Hassan, … Tito Henry4

May 2

Inquiry about the test file

Dear Dr Michael, Therefore, rho squared for initial model isn't reference at all , either I run

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Inquiry about the test file

Dear Dr Michael, Therefore, rho squared for initial model isn't reference at all , either I run

May 2

May 1

Latent variable and panel data

Hello, I am doing a model with a latent variable with an error component normally distributed and I

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Latent variable and panel data

Hello, I am doing a model with a latent variable with an error component normally distributed and I

May 1

ענבל גליקמן

May 1

Issue with HCM Combining Latent variable and Panel effect

Dear Prof. Berlier, I need your assistance with an issue I am encountering while estimating a HCM

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Issue with HCM Combining Latent variable and Panel effect

Dear Prof. Berlier, I need your assistance with an issue I am encountering while estimating a HCM

May 1

Natchaphon Leungbootnak, Michel Bierlaire2

Apr 28

Inquiry about Y Prediction Calculation

Accuracy percentage and confusion matrices are just nonsense. The only context where considering the

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Inquiry about Y Prediction Calculation

Accuracy percentage and confusion matrices are just nonsense. The only context where considering the

Apr 28

Apr 24

How to properly model and identify panel effect in Biogeme?

Dear all, I'm currently working with panel data in Biogeme and trying to understand how to

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How to properly model and identify panel effect in Biogeme?

Dear all, I'm currently working with panel data in Biogeme and trying to understand how to

Apr 24

Zahra Vakili, Michel Bierlaire2

Apr 13

Question Regarding Ordered Probit Model Results

> On 13 Apr 2025, at 10:12, Zahra Vakili <zahrava...@gmail.com> wrote: > > Dear

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Question Regarding Ordered Probit Model Results

> On 13 Apr 2025, at 10:12, Zahra Vakili <zahrava...@gmail.com> wrote: > > Dear

Apr 13

Natchaphon Leungbootnak, Michel Bierlaire2

Apr 8

RUM vs RRM in biogeme: Is it possible Final LL, AIC, BIC, and confusion matrix are exactly the same?

You've made a mistake. You have estimated twice the exact same model. Also, the concept of "

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RUM vs RRM in biogeme: Is it possible Final LL, AIC, BIC, and confusion matrix are exactly the same?

You've made a mistake. You have estimated twice the exact same model. Also, the concept of "

Apr 8

Natchaphon Leungbootnak, Michel Bierlaire2

Apr 8

The Norm of Gradient Issue in Mixed Logit Model with Panel Data

Try asc_ML_s = Beta('asc_ML_s', 10, -100, 100, 0) Also, estimate first a model ignoring the

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The Norm of Gradient Issue in Mixed Logit Model with Panel Data

Try asc_ML_s = Beta('asc_ML_s', 10, -100, 100, 0) Also, estimate first a model ignoring the

Apr 8

John Abraham, Michel Bierlaire3

Apr 8

Hello and a question about a parameter inside a log.

Hi John, > On 1 Apr 2025, at 23:06, John Abraham <j...@hbaspecto.com> wrote: > >

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Hello and a question about a parameter inside a log.

Hi John, > On 1 Apr 2025, at 23:06, John Abraham <j...@hbaspecto.com> wrote: > >

Apr 8

Apr 1

Unexpected Results in Logit Model with Repeated Choices in Biogeme

Dear all: I'm currently building a logit model in Biogeme. In my setup, each respondent makes a

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Unexpected Results in Logit Model with Repeated Choices in Biogeme

Dear all: I'm currently building a logit model in Biogeme. In my setup, each respondent makes a

Apr 1

Mar 31

RuntimeError: Value 0 out of range – Even in minimal working model

Hello Biogeme team, I'm encountering a persistent RuntimeError when estimating even a minimal

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RuntimeError: Value 0 out of range – Even in minimal working model

Hello Biogeme team, I'm encountering a persistent RuntimeError when estimating even a minimal

Mar 31

Natchaphon Leungbootnak, Michel Bierlaire3

Mar 25

Panel data: Simulate prediction results at the observation level instead of individual level

For my understanding, when I run the code, I have to set up the df_train as the panel data. However,

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Panel data: Simulate prediction results at the observation level instead of individual level

For my understanding, when I run the code, I have to set up the df_train as the panel data. However,

Mar 25

Natchaphon Leungbootnak

Mar 23

Panel data: How to simulate prediction results at the observation level instead of individual levelof

Dear Professor Bierlaire, I have a panel dataset that contains 'randid' (individual traveler)

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Panel data: How to simulate prediction results at the observation level instead of individual levelof

Dear Professor Bierlaire, I have a panel dataset that contains 'randid' (individual traveler)

Mar 23

Muhammad Kalifardi, Michel Bierlaire2

Mar 17

Error in Installation

It seems that you have a package that request an old version of numpy. The best solution is to create

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Error in Installation

It seems that you have a package that request an old version of numpy. The best solution is to create

Mar 17

Mar 12

Simulation for an ordered hybrid choice model

Dear Professor Bierlaire, I am trying to simulate a hybrid choice model with a single ordered choice

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Simulation for an ordered hybrid choice model

Dear Professor Bierlaire, I am trying to simulate a hybrid choice model with a single ordered choice

Mar 12

ענבל גליקמן, Michel Bierlaire4

Mar 11

Incorporating a Latent Variable in an MNL Model

: :I tried using the method from the explanation file you sent me, and I formulated the model as

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Incorporating a Latent Variable in an MNL Model

: :I tried using the method from the explanation file you sent me, and I formulated the model as

Mar 11

Mike Sri, Michel Bierlaire2

Mar 3

Ordered logit predicted value used as 2SLS

Yes, it is possible. The syntax would be similar to the one used for hydrid choice models. Have a

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Ordered logit predicted value used as 2SLS

Yes, it is possible. The syntax would be similar to the one used for hydrid choice models. Have a

Mar 3

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