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Thank you so much for your explanation and helpful suggestion, that helped!

Hi, I wrote the following Ngene code for a DCE with two alternatives. However, Ngene fails to find an initial design and I don't understand why that is.
Can you help me?

Here is the code:

Design
;alts = alt1*, alt2*
;rows = 24
;block = 3
;eff = (mnl, d)
;rep = 500
;model:
U(alt1) = b1[0.9] * W[1 ...

I understand, thank you for your explanation and suggestion!

Christian

You are overspecifying your model and it cannot be estimated, so the D-error becomes infinite. The issue is that you included interactions with both dummy[1] and dummy[2] into the model, but with dummy coding you can only use L-1 dummy variables, where L is the number of levels. So you should ...

Thank you so much, that helped!

Hi everyone

I am trying to generate a new design for a DCE; please see the code below. The problem is that I get the warning "No valid design has been found after 1000 evaluations." I am recommended to check whether probabilities might be too extreme or priors too large. However, given the defined ...

Thank you Michiel, your answer was most helpful!

Hi everyone, I will be conducting a choice experiment on job preferences in order to estimate how much wage individuals are willing to forgo to enjoy job amenities. Therefore, it's a willingness-to-pay design with the wage parameter (b1 below) as WTP denominator. Most importantly, we also want to ...