Hello, founder, I am a newcomer to ngene. I have several questions about Ngene that I would like to ask. I wonder if I can get a response from you:
First of all, let me introduce my attributes. I have 6 attributes, with 2-3 levels for each attribute. Now I only know the positive and negative conditions of the attributes (although I have conducted a preliminary survey, the positive and negative values of some indicators obtained are different from what I expected)
Is it correct for me to use the following command for efficient design? (2 alternatives and 1 exit option)
Design
;alts = alt1, alt2,alt3
;rows=18
;block=3
;eff=(mnl,d)
;alg = mfederov(candidates = 1000)
;con
;model:
U(alt1) =a1[0.0001]
+b2[0.00001]* A[0,1,2]
+b3[0.00001]* B[0,1]
+b4[0.00001]* C[0,1]
+b5[0.00001]* D[0,1,2]
+b6[0.00001]* E[0,1]
+b7[-0.00001]* F[0.05,0.15]/
U(alt2) =b2* A[0,1,2] + b3* B[0,1]+b4* C[0,1]+b5* D[0,1,2]+b6* E[0,1]+b7* F[0.05,0.15]/
U(alt3)=b8[0]
$
But the result I obtained is D-error=0.459838 and the D optimality=62.966741%
Is this error too large?Is this D optimality too low?Or can you tell me that I am doing the right thing?