Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of the Effectiveness of Face-Coverings on the Death Ratio of
  COVID-19 Using Machine Learning   The recent outbreak of the COVID-19 led to the death of millions of people
worldwide. To stave off the spread of the virus, the authorities in the US
employed different strategies, including the mask mandate order issued by the
states' governors. In the current work, we defined a parameter called the
average death ratio as the monthly average of the number of daily deaths to the
monthly average number of daily cases. We utilized survey data to quantify
people's abidance by the mask mandate order. Additionally, we implicitly
addressed the extent to which people abide by the mask mandate order that may
depend on some parameters like population, income, and education level. Using
different machine learning classification algorithms, we investigated how the
decrease or increase in death ratio for the counties in the US West Coast
correlates with the input parameters. The results showed that for most counties
there, the mask mandate order decreased the death ratio reflecting the
effectiveness of this preventive measure on the West Coast. Additionally, the
changes in the death ratio demonstrated a noticeable correlation with the
socio-economic condition of each county. Moreover, the results showed a
promising classification accuracy score as high as around 90%.

12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas