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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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Hafsoah Ahmad, Michel Bierlaire2

1:57 PM

Positive latent variable

> On 2 May 2024, at 18:01, 'Hafsoah Ahmad' via Biogeme <bio...@googlegroups.com>

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Positive latent variable

> On 2 May 2024, at 18:01, 'Hafsoah Ahmad' via Biogeme <bio...@googlegroups.com>

1:57 PM

Mike Sri, Michel Bierlaire4

1:55 PM

question about null log-likelihood on different model but using same datset

> On 2 May 2024, at 17:21, Mike Sri <tats...@gmail.com> wrote: > > Thank you for the

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question about null log-likelihood on different model but using same datset

> On 2 May 2024, at 17:21, Mike Sri <tats...@gmail.com> wrote: > > Thank you for the

1:55 PM

Rachel Murray-Watson, Michel Bierlaire4

May 1

Calculation of Fisher Information Matrix and/or Asymptotic Variance-Covariance Matrix

results.getVarCovar --> Rao-Cramer results.getRobustVarCovar --> the robust version > On 1

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Calculation of Fisher Information Matrix and/or Asymptotic Variance-Covariance Matrix

results.getVarCovar --> Rao-Cramer results.getRobustVarCovar --> the robust version > On 1

May 1

Rachel Murray-Watson, Michel Bierlaire5

May 1

Need for attitudes survey for latent class model

Thanks so much for the feedback! On Tuesday, April 23, 2024 at 10:39:29 AM UTC-4 michel.b...@epfl.ch

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Need for attitudes survey for latent class model

Thanks so much for the feedback! On Tuesday, April 23, 2024 at 10:39:29 AM UTC-4 michel.b...@epfl.ch

May 1

Kexin Lai, Michel Bierlaire2

Apr 27

Using Random Subsets of the Full Choice Set

> On 26 Apr 2024, at 21:13, Kexin Lai <kexi...@gmail.com> wrote: > > Dear Professor

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Using Random Subsets of the Full Choice Set

> On 26 Apr 2024, at 21:13, Kexin Lai <kexi...@gmail.com> wrote: > > Dear Professor

Apr 27

chao chen, … Michel Bierlaire6

Apr 22

Why the running time of the biogeme code bocame so so so slow, especially for using Monte-Carlo

Dear Jorge, Thanks for your help, it helps me a lot indeed. I still have a question on how to cancel

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Why the running time of the biogeme code bocame so so so slow, especially for using Monte-Carlo

Dear Jorge, Thanks for your help, it helps me a lot indeed. I still have a question on how to cancel

Apr 22

katrina gething, Michel Bierlaire3

Apr 21

Context variable

By the way, this can be useful: https://youtu.be/35MREkzMLOw?si=f_O8VHUjLLEfTVaQ > On 20 Apr 2024,

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Context variable

By the way, this can be useful: https://youtu.be/35MREkzMLOw?si=f_O8VHUjLLEfTVaQ > On 20 Apr 2024,

Apr 21

hesam mahmoodi, Michel Bierlaire2

Apr 21

Error in logit model code

It is probably a typo. Biogeme does not recognize the keyword 'Tick' in your model. > On

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Error in logit model code

It is probably a typo. Biogeme does not recognize the keyword 'Tick' in your model. > On

Apr 21

Amin Afshari, Michel Bierlaire2

Apr 18

Interpreting sigma sign while estimating a choice model with latent variables (sequential estimation)

There is no problem. The sign is irrelevant. > On 17 Apr 2024, at 17:08, Amin Afshari <

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Interpreting sigma sign while estimating a choice model with latent variables (sequential estimation)

There is no problem. The sign is irrelevant. > On 17 Apr 2024, at 17:08, Amin Afshari <

Apr 18

benzvi...@gmail.com, … Michel Bierlaire7

Apr 17

Error componanets and random parameters in panel data mixed logit model

Yes, absolutely. > On 17 Apr 2024, at 15:33, xinyuz...@gmail.com wrote: > > Thank you

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Error componanets and random parameters in panel data mixed logit model

Yes, absolutely. > On 17 Apr 2024, at 15:33, xinyuz...@gmail.com wrote: > > Thank you

Apr 17

Newsha Bagheri, Michel Bierlaire2

Apr 16

Latent Class model

Generating synthetic data for choice models is tricky. The best way is to use real data for the

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Latent Class model

Generating synthetic data for choice models is tricky. The best way is to use real data for the

Apr 16

Ricardo Lu, Michel Bierlaire5

Apr 10

OptimizationError by running Assisted Specification

You need to identify which model causes the problem, and investigate the issue. This is a numerical

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OptimizationError by running Assisted Specification

You need to identify which model causes the problem, and investigate the issue. This is a numerical

Apr 10

Yuan Wang, Michel Bierlaire3

Apr 9

Error while conducting a MonteCarlo integration estimation

The error is self-explanatory: > The following random variables are defined outside the Integrate

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Error while conducting a MonteCarlo integration estimation

The error is self-explanatory: > The following random variables are defined outside the Integrate

Apr 9

Kesewa Opoku Agyemang, Michel Bierlaire2

Apr 3

Increasing maximum iteration

> On 3 Apr 2024, at 08:05, Kesewa Opoku Agyemang <opoku...@gmail.com> wrote: > >

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Increasing maximum iteration

> On 3 Apr 2024, at 08:05, Kesewa Opoku Agyemang <opoku...@gmail.com> wrote: > >

Apr 3

Anderson silva dos santos, Michel Bierlaire4

Apr 1

Assistance Needed: Divergent Results in Biogeme Model Estimation

Thank you Prof Bierlaire, It was a problem with the dataset. Now it looks ok! And yes, the distance

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Assistance Needed: Divergent Results in Biogeme Model Estimation

Thank you Prof Bierlaire, It was a problem with the dataset. Now it looks ok! And yes, the distance

Apr 1

Shahrdad Esmaeili, Michel Bierlaire2

Apr 1

ranked alternatives

Yes, but you have to prepare your data first. If an individual ranks alternatives as 5, 2, 3, 1, 4,

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ranked alternatives

Yes, but you have to prepare your data first. If an individual ranks alternatives as 5, 2, 3, 1, 4,

Apr 1

Benoit L., Michel Bierlaire2

Mar 27

Convergence clarifications and panel data with ICVL

> On 25 Mar 2024, at 17:04, Benoit L. <ben...@gmail.com> wrote: > > Dear Biogeme

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Convergence clarifications and panel data with ICVL

> On 25 Mar 2024, at 17:04, Benoit L. <ben...@gmail.com> wrote: > > Dear Biogeme

Mar 27

Suppharutchaya Chongutsah, Michel Bierlaire4

Mar 27

Seeking Advice on Improving Logit Model Performance

> On 22 Mar 2024, at 17:43, Suppharutchaya Chongutsah <s.chon...@gmail.com> wrote: >

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Seeking Advice on Improving Logit Model Performance

> On 22 Mar 2024, at 17:43, Suppharutchaya Chongutsah <s.chon...@gmail.com> wrote: >

Mar 27

Mar 22

biogeme.exceptions.BiogemeError in MNL model

Hi professor, While running the codes I encountered a problem and I still do not know how to solve it

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biogeme.exceptions.BiogemeError in MNL model

Hi professor, While running the codes I encountered a problem and I still do not know how to solve it

Mar 22

Suppharutchaya Chongutsah, Michel Bierlaire2

Mar 21

Hybrid Choice Model (ICLV) Integration with Biogeme

It is described in this document as https://transp-or.epfl.ch/documents/technicalReports/Bier18b.pdf

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Hybrid Choice Model (ICLV) Integration with Biogeme

It is described in this document as https://transp-or.epfl.ch/documents/technicalReports/Bier18b.pdf

Mar 21

Annesha Enam, … Michel Bierlaire5

Mar 18

Saving biodraws

There are several examples under "Programming with Biogeme" https://biogeme.epfl.ch/sphinx/

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Saving biodraws

There are several examples under "Programming with Biogeme" https://biogeme.epfl.ch/sphinx/

Mar 18

Amin As, Michel Bierlaire4

Mar 18

Nested Logit Model for Mode and Departure time Choice

The parameters are defined in the file biogeme.toml, in the section [SimpleBounds] second_derivatives

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Nested Logit Model for Mode and Departure time Choice

The parameters are defined in the file biogeme.toml, in the section [SimpleBounds] second_derivatives

Mar 18

Amin Afshari, antare...@gmail.com2

Mar 11

warning in the estimation of measurement equations in a hybrid model

Hi Amin, That message indicates that you have defined more coefficients than needed, so it is

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warning in the estimation of measurement equations in a hybrid model

Hi Amin, That message indicates that you have defined more coefficients than needed, so it is

Mar 11

Mar 8

simulating ordered logit model

Dear Professor, I estimated an ordered logit model and obtained the respective tau parameters. I now

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simulating ordered logit model

Dear Professor, I estimated an ordered logit model and obtained the respective tau parameters. I now

Mar 8

Md Shakatul Islam, Michel Bierlaire2

Mar 8

error in the utility function

It seems that Short_pt_tc is a numpy array and not a Biogeme expression... > On 6 Mar 2024, at 19:

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error in the utility function

It seems that Short_pt_tc is a numpy array and not a Biogeme expression... > On 6 Mar 2024, at 19:

Mar 8

Xinyu Wang, Michel Bierlaire3

Mar 2

No module named 'read_or_estimate'

Just copy it in the same directory. It is called by the script. > On 2 Mar 2024, at 11:27,

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No module named 'read_or_estimate'

Just copy it in the same directory. It is called by the script. > On 2 Mar 2024, at 11:27,

Mar 2

Ricardo Lu, Michel Bierlaire2

Feb 29

Maximum number of iterations in assisted specification

It can be changed in the file biogeme.toml, section [SimpleBounds]: [SimpleBounds] max_iterations =

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Maximum number of iterations in assisted specification

It can be changed in the file biogeme.toml, section [SimpleBounds]: [SimpleBounds] max_iterations =

Feb 29

Mahdi Samadzad, Michel Bierlaire2

Feb 29

Multiple Indicators Solution

The use of multiple indicators in general with Biogeme is illustrated in the context of latent

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Multiple Indicators Solution

The use of multiple indicators in general with Biogeme is illustrated in the context of latent

Feb 29

Noah Wölki, Michel Bierlaire2

Feb 24

Latent Class modeling

> On 23 Feb 2024, at 23:27, Noah Wölki <noah....@gmail.com> wrote: > > Dear

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Latent Class modeling

> On 23 Feb 2024, at 23:27, Noah Wölki <noah....@gmail.com> wrote: > > Dear

Feb 24

rossol...@gmail.com, Michel Bierlaire2

Feb 23

Simulation for panel data

> On 23 Feb 2024, at 12:50, rossol...@gmail.com <rossol...@gmail.com> wrote: > >

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Simulation for panel data

> On 23 Feb 2024, at 12:50, rossol...@gmail.com <rossol...@gmail.com> wrote: > >

Feb 23

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