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Dear Michiel Bliemer,
My sincere thanks to you.
Sincerely yours,
Sukunta

Dear Michiel Bliemer,
Thank you so much for your recommendation. I try to test d-error between two syntaxes:
The first syntax is as follows,
Design
;alts = alt1*, alt2*, optout
;rows = 24
;block = 2
;eff = (mnl, d)
;model:
U(alt1) = b1.dummy[0|0|0|0] * loc[1,2,3,4,0]
+ b2.dummy[0|0] * sup[1,2,0 ...

Dear Michiel Bliemer,
We want to create choice sets for DCE. We only knew the prior cost from theory, so we expected a negative sign with a small value. We do not know the prior value for the other attributes.Therefore, my syntax is as follows:, Design
;alts = alt1, alt2, alt3
;rows = 12
;eff ...

Dear Prof.Bliemer,
Thank you so much for your recommendation.
Sincerely yours,
Sukunta

Dear Michiel Blimer,
I have run the syntax for around 8 hours by Design
;alts=alt1*,alt2*,alt3
;rows=24
;block=2
;eff=(mnl,d,mean)
; con
;model:
U(alt1)=b0[(n,1.007,0.563)]+b1.dummy [ (n,0.161,0.263) | (n,0.032,0.299)|(n,-0.002,0.317)|(n,0.184,0.228)|(n,-0.206,0.292)] * locate[5,4,3,2,1,0]+b2.dummy ...

Dear Prof.Michiel Bliemer,
Thank you so much for your recommendation.
Sincerely yours,
Sukunta

Dear Prof.Michiel Bliemer,
Thank you so much. However, the levels were not balanced. How I fix this problem?

Sincerely yours,
Sukunta

Dear Prof.Michiel Bliemer,
This is the syntax of the fixed effect design Design
;alts=alt1*,alt2*,alt3
;rows=24
;block=2
;eff=(mnl,d)
; con
;model:
U(alt1)=b0[0.00001]+b1.dummy [0.000004|0.000003|0.000002|0.000001|0.000001] * locate[5,4,3,2,1,0]+b2.dummy[0.000002|0.000001|0.000001] * pretest[3,2,1 ...

Dear Prof Bliemer,
Thank you so much for your recommendation. Let me tell you that I have determined nearly zero prior for the new syntax. In addition, the priors were assumed the different values from a qualitative study as follows Design
;alts=alt1*,alt2*,alt3
;rows=24
;block=2
;eff=(mnl,d)
; con ...

Dear Prof. Blimier,
I have tried to generate the choice set for a pilot study via efficient design. Thus, the prior was determined by the expected sign and value. First, I have determined Design
;alts=alt1*,alt2*,alt3
;rows=24
;block=2
;eff=(mnl,d)
; con
;model:
U(alt1)=b0[0.001]+b1.dummy [0.0004|0 ...