I did a CBC conjoint and made an excel simulator.
Because I have different attributes and was experiencing IIA (red-bus/blue-bus) issues, I implemented the RFC excel-plugin into my simulator.
What I am now experiencing, is that the output of the preference shares based on the RFC calculations is not always the same.
Sometimes, when opening the simulator on another computer, or when opening an older version of the simulator simultaneously, the values change (although the market setup stays the same).
Is this something anyone has experienced before?
Should the RFC calculations give me the same result every single time? Or should I expect differences, as there might be different iterations and thus outcomes?
I am struggling with this problem, as I don't want my results to change, and definitely don't want my client to get other results than I get.