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We keep this in mind. In each choice set, the best choice should be dynamically hidden, leaving only the remaining alternatives for the best-best choice. Otherwise this would possibly increase the completion time. We will check whether we can implement this with SE.
Thank you very much!

Andrew

Dear Michiel,

Thank you very much, that was very helpful. I have now written a script in Stata that gives me great flexibility in creating the candidate set. I actually got the candidate set down to 2000. Ngene was a bit slow at 10000 and above and crashed occasionally (which is probably due to my ...

Addendum: I added the reject property in the first syntax above and it seems to work. I got a random design with 10.000 rows without any overlaps. Even though Ngene sometimes crashes on my computer. Not sure if some efficiency has been lost. Could this be a proper solution?

In my opinion, the ...

Hello,

I would like to create a partial profile design with 13 attributes, each with 5 levels and 3 unlabelled alternatives. Only 6 of the attributes are to be displayed in the final version. The design creation works well overall, but I would like to avoid a particular issue, if possible. For the ...

Thank you very much! I really appreciate your help and I apologize for the constant questions. I was a bit confused because my simulation data looked good, but the pretest showed a completely different picture. (The "conspicuous pattern" was then only due to the fact that individual participants ...

Dear Michiel,

I used the OOD in a pretest and encountered a few problems. The preference data did not appear as expected. However, in a previous simulation using the OOD, I was able to reproduce all assumed coefficients. I took a closer look at the design and found some conspicuous patterns.

This ...

Thank you very much again, also for pointing out the Asterisk (that was a careless copy-and-paste error). I'm looking forward to the new version 2.0.

Dear Michiel, I have a follow-up question: I happened to stumble upon a comment in the forum where you wrote that there was a bug that only occurs in some cases with 5 or more levels and only affects the D-Optimality message. In our final design with more than 5 levels, “Undefined” is displayed in ...

Thank you very much! This was a great support and took me a big step forward.

Andrew

Thank you very much again!

We cannot establish a clear preference order for risk and incentives, as there appear to be dependencies on the region/field. Without a pilot, this will be hard to determine. I will test and compare the efficient design (using the Modified Federov algorithm) and the OOD ...