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st: Initial values not feasible problem in xtmelogit
From
Maria Estela Rivero Fuentes <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
st: Initial values not feasible problem in xtmelogit
Date
Tue, 26 Apr 2011 18:42:09 +0000
Dear all:
I am trying to run some mixed logit models in Stata using xtmelogit, and I am getting the error message that the initial values are not feasible (r (400))
I tried running a simple logit and storing the coefficients in a matrix b, along with some small values for the sigmas, and running the xtmelogit with the from option, but then I get a new error message, saying that an extra parameter was found.
Here's what I've done:
. xi:xtmelogit privada_libertad_madre_si reactiva_liberal_nueva edad_madre_21_30 edad_madre_31 hijos_vivos_1 hijos_vivos_2 hijos_vivos_3 lengua_indig_madre_mod i.edo_marital || id_clues_liberal:reactiva_liberal_nueva
initial values not feasible
r(1400);
. logit privada_libertad_madre_si reactiva_liberal_nueva edad_madre_21_30 edad_madre_31 hijos_vivos_1 hijos_vivos_2 hijos_vivos_3 lengua_indig_madre_mod i.edo_marital
First I did this:
. mat b=e(b)
. xi:xtmelogit privada_libertad_madre_si reactiva_liberal_nueva edad_madre_21_30 edad_madre_31 hijos_vivos_1 hijos_vivos_2 hijos_vivos_3 lengua_indig_madre_mod i.edo_marital || id_clues_liberal:reactiva_liberal_nueva, from(b)
i.edo_marital _Iedo_marit_1-3 (naturally coded; _Iedo_marit_1 omitted)
extra parameter privada_libertad_madre_si:reactiva_liberal_nueva found
specify skip option if necessary
r(111);
Later I tried this other option
. mat b=e(b),.1, .1
. xi:xtmelogit privada_libertad_madre_si reactiva_liberal_nueva edad_madre_21_30 edad_madre_31 hijos_vivos_1 hijos_vivos_2 hijos_vivos_3 lengua_indig_madre_mod i.edo_marital || id_clues_liberal:reactiva_liberal_nueva, from(b)
i.edo_marital _Iedo_marit_1-3 (naturally coded; _Iedo_marit_1 omitted)
extra parameter privada_libertad_madre_si:reactiva_liberal_nueva found
specify skip option if necessary
r(111);
Does anyone have a suggestion?? Thank you very much,
Estela Rivero
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