pomp (version 1.4.1.1)

ricker: Ricker model with Poisson observations.

Description

ricker is a pomp object encoding a stochastic Ricker model with Poisson measurement error.

Details

The state process is $N_{t+1} = r N_{t} \exp(-N_{t}+e_{t})$, where the $e_t$ are i.i.d. normal random deviates with zero mean and variance $\sigma^2$. The observed variables $y_t$ are distributed as $\mathrm{Poisson}(\phi N_t)$.

See Also

pomp, gompertz, and the tutorials on the http://kingaa.github.io/pomp{package website}.

Examples

pompExample(ricker)
plot(ricker)
coef(ricker)