Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Agent-based model and data assimilation: Analysis of COVID-19 in Tokyo   In this paper we introduce an agent-based model together with a particle
filter approach for studying the spread of COVID-19. Investigations are
performed on the metropolis of Tokyo, but other cities, regions or countries
could have been equally chosen. A novel method for evaluating the effective
reproduction number is one of the main outcome of our approach. Other unknown
parameters and unknown populations are also evaluated. Uncertain quantities, as
for example the ratio of symptomatic / asymptomatic agents, are tested and
discussed, and the stability of our computations is examined. Detailed
explanations are provided for the model and for the assimilation process.

14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom