search for: data_negbin_fin

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2012 Jul 15
0
NaN in hurdle model please?
Simplify your model. Does your TandemRepeat have a lot of levels? Or is your sample size very small? Alain Dear all, I am fitting a hurdle model in the following way: HNB <- hurdle(chro ~ as.factor(TandemRepeat)| as.factor(TandemRepeat), data =data_negbin_fin, dist = "negbin") But the std. error for log(theta) = NA Count model coefficients (truncated negbin with log link): Estimate Std. Error z value Pr(>|z|) Log(theta) 13.5062 NA NA NA And i...