choice-metrics.com

Dear all,

I want to refer to Ngene software in my paper as I used it to produce my CE designs. I would appreciate if I get the right reference for it. With thanks!

Kind regards
M. Alemu
PhD Fellow
University of Copenhagen
Denmark

Okay thank you Michiel.

Dear Michiel

Thank you for the swift response. As you can see alternative 1 in choice task is repeated in choice task 4 as alternative 2. Also alternative 2 in choice task 1 is repeated in choice task 12 as alternative 1. There are also other similar cases in the design.




MNL efficiency ...

Dear Michiel/ Andrew,

I am trying to generate the following design which also includes interaction effect. I got the priors from a pilot survey. At least three alternatives are repeated in different choice sets (not within choice sets). I was trying to figure our why this is happening but I am ...

Dear Michiel,

I really thank you very much - you really help me resolve this problem which otherwise would be catastrophic

Kind regards
Mohammed

Ok Michiel but I am a little bit confused. Why do we include the - 1 in the data if we don't estimate a parameter for them. For instance, this is what I did when I enter the data to excel: Imagine the following choice set

Option 1 Option 2
Nutritional value Average Low
Food safety control Very ...

Hi Michiel,

Thank you very much for your response. I get your message but even if they are in the data we don't estimate a parameter for the base level which is denoted as -1,-1, right?

Kind regards
Mohammed
PhD candidate
University of Copenhagen

I am sorry for some silly questions but running the above syntax yields some overlapping levels in four to five scenarios (especially for nut and fsafe attributes). I guess this might be related to the priors but those fixed priors are obtained from the pilot survey.

And note that the insignificant variables are recom and locate, and it is only for these attributes I used Bayesian distribution, the rest are fixed as they are significant.

Dear Ngene users,

We have conducted a pilot survey and estimated an MNL model. The results seem fine but five of the 11 estimated parameters are highly insignificant. I know that data from pilot studies most likely lead to insignificant estimates but the problem is whether to use them as priors or ...