efficient design syntax

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nitanan
Posts: 3
Joined: Fri Apr 15, 2016 7:25 am

efficient design syntax

Post by nitanan »

Dear all THE FOLLOWING did not include the intercept (constant) therefore, is the following acceptable to run the efficient design ..tq

Design
;alts = alt1*, alt2*
;rows = 12
;eff = (mnl,d)
;block = 2
;model:
U(alt1) = b1[0.17]*A[0, 1, 2] + b2[0.18]*B[0,1,2] + b3[0.13]*C[0,1,2] + b4[0.13]*D[0,1,2] + b5[-0.2]*E[0,1,2,3] /
U(alt2) = b1*A + b2*B + b3*C + b4*D + b5*E$
Michiel Bliemer
Posts: 2057
Joined: Tue Mar 31, 2009 4:13 pm

Re: efficient design syntax

Post by Michiel Bliemer »

Yes this is definitely acceptable. If you have unlabelled alternatives, which you seem to have, then you typically do not include an alternative specific constant.
nitanan
Posts: 3
Joined: Fri Apr 15, 2016 7:25 am

Re: efficient design syntax

Post by nitanan »

Thank you for your kind reply ( Michiel Bliemer ).
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