Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Statistical Analysis of the Ricker Model   The Ricker model was introduced in the context of managing fishing stocks. It
is a discrete non-linear iterative model given by $N(t+1)=rN(t)\exp(-N(t))$
where $N(t)$ is the population at time $t$. The model treated in this paper
includes a random component $N(t+1)=rN(t)\exp(-N(t)+\varepsilon(t+1))$ and what
is observed at time $t$ is a Poisson random variable with parameter $\varphi
N(t)$. Such a model has been analysed using `synthetic likelihood' and ABC
(Approximate Bayesian Computation). In contrast this paper takes a
non-likelihood approach and treats the model in a consistent manner as an
approximation. The goal is to specify those parameter values if any which are
consistent with the data.

33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex