Strategies for Humanitarian Logistics and Supply Chain in Organizational Contexts: Pre- and Post-Disaster Management Perspectives
Systems,
Год журнала:
2024,
Номер
12(6), С. 215 - 215
Опубликована: Июнь 18, 2024
Every
organization
typically
comprises
various
internal
components,
including
regional
branches,
operations
centers/field
offices,
major
transportation
hubs,
and
operational
units,
among
others,
housing
a
population
susceptible
to
disaster
impacts.
Moreover,
organizations
often
possess
resources
such
as
staff,
vehicles,
medical
facilities,
which
can
mitigate
human
casualties
address
needs
across
affected
areas.
However,
despite
the
importance
of
managing
disasters
within
organizational
networks,
there
remains
research
gap
in
development
mathematical
models
for
scenarios,
specifically
incorporating
offices
external
stakeholders
relief
centers.
Addressing
this
gap,
study
examines
an
optimization
model
both
before
after
planning
humanitarian
supply
chain
logistical
framework
organization.
The
areas
are
defined
stakeholders,
facilities.
A
mixed-integer
nonlinear
is
formulated
minimize
overall
costs,
considering
factors
penalty
costs
untreated
injuries
demand,
delays
rescue
item
distribution
operations,
waiting
injured
emergency
vehicles
air
ambulances.
implemented
using
GAMS
software
47.1.0
test
problems
different
scales,
with
Grasshopper
Optimization
Algorithm
proposed
larger-scale
scenarios.
Numerical
examples
provided
show
effectiveness
feasibility
validate
metaheuristic
approach.
Sensitivity
analysis
conducted
assess
model’s
performance
under
conditions,
key
managerial
insights
implications
discussed.
Язык: Английский
ESARSA-MRFO-FS: Optimizing Manta-ray Foraging Optimizer using Expected-SARSA reinforcement learning for features selection
Knowledge-Based Systems,
Год журнала:
2025,
Номер
unknown, С. 113695 - 113695
Опубликована: Май 1, 2025
Язык: Английский
Advancing feature ranking with hybrid feature ranking weighted majority model: a weighted majority voting strategy enhanced by the Harris hawks optimizer
Journal of Computational Design and Engineering,
Год журнала:
2024,
Номер
11(3), С. 308 - 325
Опубликована: Май 1, 2024
Abstract
Feature
selection
(FS)
is
vital
in
improving
the
performance
of
machine
learning
(ML)
algorithms.
Despite
its
importance,
identifying
most
important
features
remains
challenging,
highlighting
need
for
advanced
optimization
techniques.
In
this
study,
we
propose
a
novel
hybrid
feature
ranking
technique
called
Hybrid
Ranking
Weighted
Majority
Model
(HFRWM2).
HFRWM2
combines
ML
models
with
Harris
Hawks
Optimizer
(HHO)
metaheuristic.
HHO
known
versatility
addressing
various
challenges,
thanks
to
ability
handle
continuous,
discrete,
and
combinatorial
problems.
It
achieves
balance
between
exploration
exploitation
by
mimicking
cooperative
hunting
behavior
Harris’s
hawks,
thus
thoroughly
exploring
search
space
converging
toward
optimal
solutions.
Our
approach
operates
two
phases.
First,
an
odd
number
models,
conjunction
HHO,
generate
encodings
along
metrics.
These
are
then
weighted
based
on
their
metrics
vertically
aggregated.
This
process
produces
rankings,
facilitating
extraction
top-K
features.
The
motivation
behind
our
research
2-fold:
enhance
precision
algorithms
through
optimized
FS
improve
overall
efficiency
predictive
models.
To
evaluate
effectiveness
HFRWM2,
conducted
rigorous
tests
datasets:
“Australian”
“Fertility.”
findings
demonstrate
navigating
We
compared
12
other
techniques
found
it
outperform
them.
superiority
was
particularly
evident
graphical
comparison
dataset,
where
showed
significant
advancements
ranking.
Язык: Английский