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elche
2008 Oct 03
1
Problem with glm.nb estimation
Dear All,
I've been using already for a year glm.nb() from the MASS package.
But today, R gave me an error message when estimating one of my usual
models:
> depEsf.nb <- glm.nb(depE ~ manuf00E + corps00E + lngdp00E + lngdp00sqE +
> lnpop00E + indshE + scishE + mechshE + elecshE + chemshE + drugshE +
> urban_dummyE + aggl_dummyE
+ + eE1 + eE2 + eE3 + eE4 + eE5 + eE6 + eE7 + eE8 + eE9 + eE10 + eE11 + eE12
+ eE13 + eE14 + eE15 + eE16 + eE17, maxit = 100000)
Warning messages:
1: In sqrt(1/i) : NaNs produced
2: In sqrt(1/i) : NaNs produced
What does it mean to receive s...