Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On spatial and spatio-temporal multi-structure point process models   Spatial and spatio-temporal single-structure point process models are widely
used in epidemiology, biology, ecology, seismology... . However, most natural
phenomena present multiple interaction structure or exhibit dependence at
multiple scales in space and/or time, leading to define new spatial and
spatio-temporal multi-structure point process models. In this paper, we
investigate and review such multi-structure point process models mainly based
on Gibbs and Cox processes.

31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat