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Hi John,

Thank you for the valuable suggestions.
By some modifications I was finally able to get approximately proportional estimates for the common attributes in both models.
Therefore I plan to proceed with the direct implementation of the priors for the final study.
But I take note that the NL ...

Many thanks to the authors of both responses!

The suggestion of Prof. Bliemer improved the situation greatly.
Now all the parameters are negative.

For the points raised by johnr - yes, I have different omitted variables for each function (but both functions are estimated from the same responses ...

Dear all,

A gentle reminder on this.

I would greatly appreciate any help or suggestions for this case.

Baiba

Dear moderators and users,

I am turning to you with a problem of counterintuitive pilot results, namely, unexpected signs of parameters.

Following points briefly describe the project.
1. The survey aims to find valuations of travel time reliability.
2. D-efficient design for MNL was created for 2 ...

Thank you very much for help!
That is a great and very useful addition.

Thank you for the answer!

Yes, indeed there is no difference if the path to the folder is indicated or not.

For creating the input file, I actually used a text editor and followed the example of automatically generated .ngd files.
So, the header is:
Design Choice situation alt1.twmean alt1.tv [and ...

Dear moderators and users,

I am very happy to find this forum, it is great to have a place, where the questions are answered so quickly.

My problem is following: I would like to generate an efficient design, but only specific combinations of attribute levels are allowed.
More specifically, the ...