Orthogonal Fractional Factorial Design - No Design Found

[acanakci]

Hello,

May I ask you to elaborate on the causes of the following error:

Code: Select all

Warning: Defaulting to prior values of zero for the following priors: 'b1, b2, b3, b4, b5, b6, b7, b8, b9, '
Warning: One or more attributes will not have level balance with the number of rows specified: alt1.trafikyogunlugu, alt1.sigorta, alt2.trafikyogunlugu, alt2.sigorta
Note: Defaulting to assigning blocks with the 'minsum' method.

[Orthog] No design found.
Finished, at 7:10:35 PM, 10/17/2024

Code: Select all

Design
;alts = alt1*, alt2*
;rows = 100
;eff = (mnl, d)
;block = 20
;orth = seq
;model:
U(Alt1) = b1.dummy[0.00001] * GuvenlikEkipmani[0,1] + 
          b2.dummy[0.00001] * HavaDurumu[0,1] + 
          b3.dummy[0.00001|0.00001] * TrafikYogunlugu[0,1,2] + 
          b4.dummy[0.00001|0.00001] * Sigorta[0,1,2] + 
          b5.dummy[0.00001] * DolaptanDolaba[0,1] + 
          b6.dummy[0.00001|0.00001|0.00001] * CalismaSaatleri[0,1,2,3] + 
          b7[0.00001] * BisikletYoluOrani[0,0.25,0.5,0.75,1] + 
          b8[0.00001] * KatedilenMesafe[40,80,120,160] + 
          b9[0.00001] * ToplamMaliyet[50,100,150,200] +/

U(Alt2) = b1 * GuvenlikEkipmani + 
          b2 * HavaDurumu + 
          b3 * TrafikYogunlugu + 
          b4 * Sigorta + 
          b5 * DolaptanDolaba + 
          b6 * CalismaSaatleri + 
          b7 * BisikletYoluOrani + 
          b8 * KatedilenMesafe + 
          b9 * ToplamMaliyet $ 

[NassarN]

Hi

;orth = seq

The manual p74
"... sequential orthogonal designs can typically only be generated in cases where each utility function has the same attributes with the same levels (i.e.,
unlabelled alternatives)".

Best
Nassar