Quote:
Originally Posted by samdman82
If the target variable is unitvalued for something such as claim counts, I know I should use either a Poisson/Negative binomial distribution. What would be an argument for using either Poisson or Negative Binomial?
Also, what log link functions should I use and why?
Thanks for any help

If mean approximately equals to variance, use Poisson.
If mean is less than variance (overdispersion), use quasipoisson or negative binomial.