arXiv (Cornell University),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Jan. 1, 2023
This
study
proposes
an
Ensemble
Differential
Evolution
with
Simula-tion-Based
Hybridization
and
Self-Adaptation
(EDESH-SA)
approach
for
inven-tory
management
(IM)
under
uncertainty.
In
this
study,
DE
multiple
runs
is
combined
a
simulation-based
hybridization
method
that
includes
self-adaptive
mechanism
dynamically
alters
mutation
crossover
rates
based
on
the
success
or
failure
of
each
iteration.
Due
to
its
adaptability,
algorithm
able
handle
complexity
uncertainty
present
in
IM.
Utilizing
Monte
Carlo
Simulation
(MCS),
continuous
review
(CR)
inventory
strategy
ex-amined
while
accounting
stochasticity
various
demand
scenarios.
enables
realistic
assessment
proposed
algo-rithm's
applicability
resolving
challenges
faced
by
IM
practical
settings.
The
empirical
findings
demonstrate
potential
im-prove
financial
performance
optimize
large
search
spaces.
makes
use
testing
Ackley
function
Sensitivity
Analysis
Perturbations
investigate
how
changes
variables
affect
objective
value.
analysis
provides
valuable
insights
into
behavior
robustness
algorithm.
Measurement and Control,
Journal Year:
2023,
Volume and Issue:
57(4), P. 469 - 482
Published: Oct. 28, 2023
The
traditional
Harris
Hawks
optimization
algorithm
is
prone
to
the
local
shortest
path,
slow
search
speed
and
poor
path
accuracy
in
indoor
mobile
robot
planning.
For
above
problems,
a
multi-strategy
improvement
of
(MIHHO)
proposed.
In
this
study,
Chebyshev
chaotic
mapping
strategy
used
increase
diversity
Hawk
population,
improve
global
performance
algorithm,
prevent
being
trapped
locally
optimal
path.
A
fusion
exploration
mechanism
proposed
fuse
discovery
sparrow
with
HHO.
Then
influence
factor
E
improved
algorithm’s
efficiency,
finally,
design
dynamic
Lévy
flight
strategy,
which
accelerates
convergence
improves
planning
speed.
Simulation
results
show
that
MIHHO
method
exhibits
better
planning,
superior
quality
planned
paths.
IEEE Access,
Journal Year:
2023,
Volume and Issue:
11, P. 29521 - 29540
Published: Jan. 1, 2023
Battery
storage
units
(BSUs)
are
usually
used
to
perform
a
single
function
in
most
planning
studies
related
microgrids
(MGs).
This
paper
presents
an
effective
methodology
use
the
BSUs
multi-function
including
supply/demand
matching
and
energy
arbitrage.
is
done
according
system
policy
containing
all
possible
scenarios
fully
utilize
maximize
benefit.
In
proposed
work,
optimal
sizing
of
MG
under
study
wind
turbines
(WTs),
photovoltaic
(PV),
BSUs,
diesel
(DUs)
obtained.
The
main
objectives
are;
1)
minimizing
total
costs
MG,
2)
harmful
gas
emissions,
3)
accumulated
power
difference
between
generation
from
renewable
systems
(RESs)
demand.
Due
stochastic
behavior
output
RESs,
uncertainties
speed,
solar
irradiance,
temperature
considered
study.
Two
modes
operation
(grid-connected
islanded)
demand
side
management
(DSM)
also
considered.
problem
formulated
as
constrained
nonlinear
optimization
solved
using
two
metaheuristic
algorithms,
Moth-Flame
Optimization
(MFO)
Hybrid
Firefly
Particle
Swarm
(HFPSO).
Moreover,
different
parameters
by
Latin
Hypercube
Sampling
(LHS)
method
generate
samples
temperature.
To
examine
methodology,
case
presented
discussed.
results
MFO
HFPSO,
compared
show
their
effectiveness
solving
assure
solution.
implemented
MATLAB
software.
Mathematics,
Journal Year:
2023,
Volume and Issue:
11(18), P. 3861 - 3861
Published: Sept. 10, 2023
In
recent
years,
optimization
problems
have
received
extensive
attention
from
researchers,
and
metaheuristic
algorithms
been
proposed
applied
to
solve
complex
problems.
The
wild
horse
optimizer
(WHO)
is
a
new
algorithm
based
on
the
social
behavior
of
horses.
Compared
with
popular
algorithms,
it
has
excellent
performance
in
solving
engineering
However,
still
suffers
problem
insufficient
convergence
accuracy
low
exploration
ability.
This
article
presents
an
improved
(I-WHO)
early
warning
competition
mechanisms
enhance
algorithm,
which
incorporates
three
strategies.
First,
random
operator
introduced
improve
adaptive
parameters
search
algorithm.
Second,
strategy
position
update
formula
increase
population
diversity
during
grazing.
Third,
selection
mechanism
added,
agent
updated
multimodal
at
exploitation
stage
this
article,
25
benchmark
functions
(Dim
=
30,
60,
90,
500)
are
tested,
complexity
I-WHO
analyzed.
Meanwhile,
compared
six
verified
by
Wilcoxon
signed-rank
test
four
real-world
experimental
results
show
that
significantly
accuracy,
showing
preferable
superiority
stability.
Water Science & Technology,
Journal Year:
2023,
Volume and Issue:
88(2), P. 468 - 485
Published: July 15, 2023
Improving
the
accuracy
of
daily
runoff
in
lower
Yellow
River
is
important
for
flood
control
and
reservoir
scheduling
River.
Influenced
by
factors
such
as
meteorology,
climate
change,
human
activities,
series
present
non-stationary
non-linear
characteristics.
To
weaken
non-linearity
non-smoothness
time
improve
prediction,
a
new
combined
prediction
model
(VMD-HHO-KELM)
based
on
ensemble
Variational
Modal
Decomposition
(VMD)
algorithm
Harris
Hawk
Optimisation
(HHO)
algorithm-optimised
Kernel
Extreme
Learning
Machine
(KELM)
proposed
applied
to
Gaocun
Lijin
hydrological
stations.
The
VMD-HHO-KELM
has
highest
accuracy,
with
R2
reaching
0.95,
mean
absolute
error
13.3,
root
square
33.83
at
station,
0.96,
8.03,
38.45
station.
Economic
dispatch
is
one
of
the
mathematical
optimization
problems
in
power
system
operation
and
planning.
It
aims
to
find
most
efficient
output
for
generating
units
that
meets
demand
load
at
lowest
possible
cost
while
satisfy
all
operational
constraints.
This
paper
examines
numerous
methods
address
economic
problem,
including
deterministic
approaches
like
Lagrange
multiplier
method,
metaheuristic
algorithms
such
as
Genetic
Algorithm,
Firefly
Harris-Hawks
algorithm,
their
hybridizations.
The
study
also
utilizes
PowerWorld
Simulator,
a
software
package
solves
using
sequential
linear
programming.
Two
different
case
studies
have
been
conducted
on
IEEE
5-bus
30-bus
test
systems
demonstrating
effectiveness
proposed
algorithms.
results
various
showed
are
effective
solving
problem.
was
shown
hybrid
algorithms,
which
combine
strengths
techniques,
can
achieve
significant
enhancement
total
compared
conventional
methods.