NB Dispersion (alpha) — Glossary
NB Dispersion (alpha)
Parameternb_alpha
Definition
Dispersion parameter of the negative-binomial family. Larger alpha means more overdispersion; alpha near 0 approaches Poisson.
Examples
1.0 (default).
nb_alpha
Dispersion parameter of the negative-binomial family. Larger alpha means more overdispersion; alpha near 0 approaches Poisson.
1.0 (default).