Ngene crashes when the number of alternatives is increased and correspondingly the number of sets reduced even though there are still sufficient degrees of freedom. A similar question was raised in Nov 2018 but there is no update on the forum as to a solution or workaround. Please see example below.
Any help would be much appreciated.
Thank you in advance.
Code: Select all
Design
;alts = A,B
;rows = 16
;eff=(mnl,d)
;model:
U(A) = b1.dummy[0|0|0]*P[1, 2, 3, 4] + b2.dummy[0|0]*C[1, 2, 3] +
i1[0]*P.dummy[1]*C.dummy[1] +
i2[0]*P.dummy[1]*C.dummy[2] +
i3[0]*P.dummy[2]*C.dummy[1] +
i4[0]*P.dummy[2]*C.dummy[2] +
i5[0]*P.dummy[3]*C.dummy[1] +
i6[0]*P.dummy[3]*C.dummy[2] /
U(B) = b1.dummy[0|0|0]*P[1, 2, 3, 4] + b2.dummy[0|0]*C[1, 2, 3] +
i1[0]*P.dummy[1]*C.dummy[1] +
i2[0]*P.dummy[1]*C.dummy[2] +
i3[0]*P.dummy[2]*C.dummy[1] +
i4[0]*P.dummy[2]*C.dummy[2] +
i5[0]*P.dummy[3]*C.dummy[1] +
i6[0]*P.dummy[3]*C.dummy[2] $
Design
;alts = A,B,C
;rows = 8
;eff=(mnl,d)
;model:
U(A) = b1.dummy[0|0|0]*P[1, 2, 3, 4] + b2.dummy[0|0]*C[1, 2, 3] +
i1[0]*P.dummy[1]*C.dummy[1] +
i2[0]*P.dummy[1]*C.dummy[2] +
i3[0]*P.dummy[2]*C.dummy[1] +
i4[0]*P.dummy[2]*C.dummy[2] +
i5[0]*P.dummy[3]*C.dummy[1] +
i6[0]*P.dummy[3]*C.dummy[2] /
U(B) = b1.dummy[0|0|0]*P[1, 2, 3, 4] + b2.dummy[0|0]*C[1, 2, 3] +
i1[0]*P.dummy[1]*C.dummy[1] +
i2[0]*P.dummy[1]*C.dummy[2] +
i3[0]*P.dummy[2]*C.dummy[1] +
i4[0]*P.dummy[2]*C.dummy[2] +
i5[0]*P.dummy[3]*C.dummy[1] +
i6[0]*P.dummy[3]*C.dummy[2] /
U(C) = b1.dummy[0|0|0]*P[1, 2, 3, 4] + b2.dummy[0|0]*C[1, 2, 3] +
i1[0]*P.dummy[1]*C.dummy[1] +
i2[0]*P.dummy[1]*C.dummy[2] +
i3[0]*P.dummy[2]*C.dummy[1] +
i4[0]*P.dummy[2]*C.dummy[2] +
i5[0]*P.dummy[3]*C.dummy[1] +
i6[0]*P.dummy[3]*C.dummy[2] $