Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalable penalized spatiotemporal land-use regression for ground-level
  nitrogen dioxide   Nitrogen dioxide (NO$_2$) is a primary constituent of traffic-related air
pollution and has well established harmful environmental and human-health
impacts. Knowledge of the spatiotemporal distribution of NO$_2$ is critical for
exposure and risk assessment. A common approach for assessing air pollution
exposure is linear regression involving spatially referenced covariates, known
as land-use regression (LUR). We develop a scalable approach for simultaneous
variable selection and estimation of LUR models with spatiotemporally
correlated errors, by combining a general-Vecchia Gaussian process
approximation with a penalty on the LUR coefficients. In comparisons to
existing methods using simulated data, our approach resulted in higher
model-selection specificity and sensitivity and in better prediction in terms
of calibration and sharpness, for a wide range of relevant settings. In our
spatiotemporal analysis of daily, US-wide, ground-level NO$_2$ data, our
approach was more accurate, and produced a sparser and more interpretable
model. Our daily predictions elucidate spatiotemporal patterns of NO$_2$
concentrations across the United States, including significant variations
between cities and intra-urban variation. Thus, our predictions will be useful
for epidemiological and risk-assessment studies seeking daily, national-scale
predictions, and they can be used in acute-outcome health-risk assessments.

37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas