Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Risk Model of German Corona Warning App - Reloaded   In this paper we discuss the risk model of the German Corona Warning App
(CWA) in two versions. Both are based on a general semi-quantitative risk
approach that is not state of the art anymore and for some application domains
even deprecated. However, it turns out that the CWA uses a much more limited
model, that does not even assess risk, but relies only on one parameter, a
weighted exposure time. It is shown that the CWA grossly underestimates even
this parameter and so may reassure the users wrongly. As the CWA also has other
systematic limitations and shortcomings it is advised not to rely on its
results but rather on Covid testing and vaccination.

36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom