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groundstart
2008 Jan 03
1
GLM results different from GAM results without smoothing terms
...pecified sum of smooth functions of the
covariates plus a conventional parametric component of the linear
predictor." I am fitting the GAM without smooth functions and would have
expected the parameter estimates to be equal to the GLM.
I am fitting the following model:
reg.glm=glm(YES~factor(RoundStart)+DEP+SPD+S.S+factor(LOST),family=binomial(
link="probit"))
reg.gam=gam(YES~factor(RoundStart)+DEP+SPD+S.S+factor(LOST),family=binomial(
link="probit"))
DEP, SPD, S.S, and LOST are invariant across the observations within the
same RoundStart. Therefore, I would expect to get NAs...