FrequencyModels

Modeling Frequency
  |
  |-- Equi-Dispersion (Baseline)
  |     |
  |     `-- Standard Poisson
  |
  |-- Over-Dispersion
  |     |
  |     |-- Negative Binomial
  |     |
  |     |-- Zero-Inflated Poisson 
  |     |
  |     `-- Finite Mixture Poisson 
  |
  `-- Over- or Under-Dispersion
        |
        |-- Quasi-Poisson
        |
        |-- Hurdle Poisson
        |
        |-- Generalized Poisson 
        |
        |-- Double Poisson
        |
        |-- Conway-Maxwell Poisson
        |
        `-- Hyper-Poisson