Thank you! Yes I am aware that the richness of the data is quite limited.
So would this mean if there were more parameters in the model, there would be less issues?
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Search found 7 matches
- 18 Sep 2020, 15:03
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
- 18 Sep 2020, 14:45
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
Re: NaNs
I have now fixed lambda_Brand and lambda_NoBrand at 1, which makes the NaNs disappear (most of them). However, having both nests to 1, would mean that the likelihood of choosing one of the nests is the same, which does not make too much sense.
Here the output:
Model run using Apollo for R, version ...
Here the output:
Model run using Apollo for R, version ...
- 18 Sep 2020, 14:14
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
Re: NaNs
Regarding the nests: if one outside option is available so is the other. However, there are cases where no Brand and none of the two NoNameBrands is available.
- 18 Sep 2020, 14:03
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
Re: NaNs
Thank you so much! The model is working now.
I tried the same with NLM. However, the solution isn´t the same at least it seems so.
Here the model outputs:
Model run using Apollo for R, version 0.1.0
www.ApolloChoiceModelling.com
Model name : NL Model
Model description : NL Model with data
Model ...
I tried the same with NLM. However, the solution isn´t the same at least it seems so.
Here the model outputs:
Model run using Apollo for R, version 0.1.0
www.ApolloChoiceModelling.com
Model name : NL Model
Model description : NL Model with data
Model ...
- 18 Sep 2020, 11:39
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
Re: NaNs
Hi Stephane,
Thanks a lot! I got rid of the NaNs now.
Do you have any recommendations around which value I should fix the parameters?
Thanks a lot! I got rid of the NaNs now.
Do you have any recommendations around which value I should fix the parameters?
- 18 Sep 2020, 10:24
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
Re: NaNs
Hi Stephane,
the data is in a binary structure e.g. if Price 1 is offered it is 1 and if not it is 0. This then has an impact on the alternatives offered means if Price 1 is not offered all alternatives that have it as an characteristic are not available (for the example of Price 1 not being ...
the data is in a binary structure e.g. if Price 1 is offered it is 1 and if not it is 0. This then has an impact on the alternatives offered means if Price 1 is not offered all alternatives that have it as an characteristic are not available (for the example of Price 1 not being ...
- 17 Sep 2020, 16:48
- Forum: Errors during model validation and/or estimation.
- Topic: NaNs
- Replies: 13
- Views: 772854
NaNs
Hi forum,
I am trying to estimate an NLM and MNL Model, which seems to be working well. However, there is still the issue of the NaNs.
Here the complete output:
Model run using Apollo for R, version 0.1.0
www.ApolloChoiceModelling.com
Model name : MNL
Model description : MNL Model with Data ...
I am trying to estimate an NLM and MNL Model, which seems to be working well. However, there is still the issue of the NaNs.
Here the complete output:
Model run using Apollo for R, version 0.1.0
www.ApolloChoiceModelling.com
Model name : MNL
Model description : MNL Model with Data ...