Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Architectures of epidemic models: accommodating constraints from
  empirical and clinical data   Deterministic compartmental models have been used extensively in modeling
epidemic propagation. These models are required to fit available data and
numerical procedures are often implemented to this end. But not every model
architecture is able to fit the data because the structure of the model imposes
hard constraints on the solutions. We investigate in this work two such
situations: first the distribution of transition times from a compartment to
another may impose a variable number of intermediary states; secondly, a
non-linear relationship between time-dependent measures of compartments sizes
may indicate the need for structurations (i.e., considering several groups of
individuals of heterogeneous characteristics).

11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc