Remote Sensing,
Journal Year:
2024,
Volume and Issue:
16(11), P. 1915 - 1915
Published: May 27, 2024
As
the
urgency
of
PM2.5
prediction
becomes
increasingly
ingrained
in
public
awareness,
deep-learning
methods
have
been
widely
used
forecasting
concentration
trends
and
other
atmospheric
pollutants.
Traditional
time-series
models,
like
long
short-term
memory
(LSTM)
temporal
convolutional
network
(TCN),
were
found
to
be
efficient
pollutant
estimation,
but
either
model
accuracy
was
not
high
enough
or
models
encountered
certain
challenges
due
their
own
structure
some
specific
application
scenarios.
This
study
proposed
a
high-accuracy,
hourly
model,
poly-dimensional
local-LSTM
Transformer,
namely
PD-LL-Transformer,
by
methods,
based
on
air
data
meteorological
data,
aerosol
optical
depth
(AOD)
retrieved
from
Himawari-8
satellite.
research
Yangtze
River
Delta
Urban
Agglomeration
(YRDUA),
China
for
2020–2022.
The
PD-LL-Transformer
had
three
parts:
embedding
layer,
which
integrated
advantages
allocating
multi-variate
features
more
refined
manner
combined
superiority
different
processing
methods;
block,
LSTM
TCN;
Transformer
encoder
block.
Over
test
set
(the
whole
year
2022),
model’s
R2
0.8929,
mean
absolute
error
(MAE)
4.4523
µg/m3,
root
squared
(RMSE)
7.2683
showing
great
prediction.
surpassed
existing
upon
same
tasks
similar
datasets,
with
help
tool
better
performance
applicability
could
established.
Atmospheric Pollution Research,
Journal Year:
2023,
Volume and Issue:
14(6), P. 101761 - 101761
Published: April 21, 2023
The
problem
of
air
pollution
has
always
plagued
people's
lives,
and
the
management
cannot
be
achieved
without
prediction
assessment
concentration
various
pollutants.
In
this
paper,
we
propose
a
method
to
accurately
predict
pollutants
with
aim
ensuring
efficiency
management.
proposed
ARIMA-WOA-LSTM
model
uses
ARIMA
extract
linear
part
data
output
nonlinear
part,
while
WOA-LSTM
is
used
where
whale
algorithm
find
perfect
hyperparameters
for
LSTM,
objectives
search
include
number
neurons,
learning
rate
batch
length.
To
prove
excellence
developed
in
article
compared
ARIMA-LSTM,
CEEMDAN-WOA-LSTM,
WOA-LSTM,
ARIMA,
LSTM.
results
show
that
performs
better
than
other
models
three
aspects:
pollutant
accuracy,
stability;
combined
also
much
single
aspects;
excellent
five
which
important
error
reduction
model.
high
reference
Atmosphere,
Journal Year:
2023,
Volume and Issue:
14(1), P. 109 - 109
Published: Jan. 4, 2023
In
this
paper,
we
explore
the
computational
capabilities
of
advanced
modeling
tools
to
reveal
factors
that
shape
observed
benzene
levels
and
behavior
under
different
environmental
conditions.
The
research
was
based
on
two-year
hourly
data
concentrations
inorganic
gaseous
pollutants,
particulate
matter,
benzene,
toluene,
m,
p-xylenes,
total
nonmethane
hydrocarbons,
meteorological
parameters
obtained
from
Global
Data
Assimilation
System.
order
determine
model
will
be
capable
achieving
a
superior
level
performance,
eight
metaheuristics
algorithms
were
tested
for
eXtreme
Gradient
Boosting
optimization,
while
relative
SHapley
Additive
exPlanations
values
used
estimate
importance
each
pollutant
parameter
prediction
concentrations.
According
results,
are
mostly
shaped
by
toluene
finest
aerosol
fraction
concentrations,
in
environment
governed
temperature,
volumetric
soil
moisture
content,
momentum
flux
direction,
as
well
hydrocarbons
nitrogen
oxide.
types
conditions
which
provided
impact
aerosol,
temperature
dynamics
distinguished
described.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Jan. 18, 2023
Abstract
China
implemented
a
strict
lockdown
policy
to
prevent
the
spread
of
COVID-19
in
worst-affected
regions,
including
Wuhan
and
Shanghai.
This
study
aims
investigate
impact
these
lockdowns
on
air
quality
index
(AQI)
using
deep
learning
framework.
In
addition
historical
pollutant
concentrations
meteorological
factors,
we
incorporate
social
spatio-temporal
influences
particular,
spatial
autocorrelation
(SAC),
which
combines
temporal
with
correlation,
is
adopted
reflect
influence
neighbouring
cities
data.
Our
analysis
obtained
estimates
effects
as
−
25.88
20.47
The
corresponding
prediction
errors
are
reduced
by
about
47%
for
67%
Shanghai,
enables
much
more
reliable
AQI
forecasts
both
cities.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: July 26, 2023
Abstract
Air
pollution
is
a
serious
problem
that
affects
economic
development
and
people’s
health,
so
an
efficient
accurate
air
quality
prediction
model
would
help
to
manage
the
problem.
In
this
paper,
we
build
combined
accurately
predict
AQI
based
on
real
data
from
four
cities.
First,
use
ARIMA
fit
linear
part
of
CNN-LSTM
non-linear
avoid
blinding
in
hyperparameter
setting.
Then,
dilemma
setting,
Dung
Beetle
Optimizer
algorithm
find
hyperparameters
model,
determine
optimal
hyperparameters,
check
accuracy
model.
Finally,
compare
proposed
with
nine
other
widely
used
models.
The
experimental
results
show
paper
outperforms
comparison
models
terms
root
mean
square
error
(RMSE),
absolute
(MAE)
coefficient
determination
(R
2
).
RMSE
values
for
cities
were
7.594,
14.94,
7.841
5.496;
MAE
5.285,
10.839,
5.12
3.77;
R
0.989,
0.962,
0.953
respectively.
BMC Infectious Diseases,
Journal Year:
2023,
Volume and Issue:
23(1)
Published: Feb. 6, 2023
Abstract
Background
Influenza
is
an
acute
respiratory
infectious
disease
that
highly
and
seriously
damages
human
health.
Reasonable
prediction
of
great
significance
to
control
the
epidemic
influenza.
Methods
Our
data
were
extracted
from
Shanxi
Provincial
Center
for
Disease
Control
Prevention.
Seasonal-trend
decomposition
using
Loess
(STL)
was
adopted
analyze
season
characteristics
influenza
in
Province,
China,
1st
week
2010
52nd
2019.
To
handle
insufficient
performance
seasonal
autoregressive
integrated
moving
average
(SARIMA)
model
predicting
nonlinear
parts
poor
accuracy
directly
original
sequence,
this
study
established
SARIMA
model,
combination
Long-Short
Term
Memory
neural
network
(SARIMA-LSTM)
SARIMA-LSTM
based
on
Singular
spectrum
analysis
(SSA-SARIMA-LSTM)
make
predictions
identify
best
model.
Additionally,
Mean
Squared
Error
(MSE),
Absolute
(MAE)
Root
(RMSE)
used
evaluate
models.
Results
The
time
series
Province
2019
showed
a
year-by-year
decrease
with
obvious
characteristics.
peak
period
mainly
concentrated
end
year
beginning
next
year.
fitting
SSA-SARIMA-LSTM
Compared
MSE,
MAE
RMSE
decreased
by
38.12,
17.39
21.34%,
respectively,
performance;
42.41,
18.69
24.11%,
performances.
Furthermore,
compared
28.26,
14.61
15.30%,
36.99,
7.22
20.62%,
Conclusions
performances
better
than
those
Generally
speaking,
we
can
apply
influenza,
offer
leg-up
public
policy.