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Old 12-09-2019, 07:57 PM
actuary121110 actuary121110 is offline
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Join Date: Jun 2017
Location: Kuala Lumpur, Malaysia
Studying for PA, QFIQF, QFIPM
College: University of Michigan, Ann Arbor (Alumni)
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Quote:
Originally Posted by samdman82 View Post
If the target variable is unit-valued 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 quasi-poisson or negative binomial.
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