Machine learning of slow collective variables and enhanced sampling via spatial techniques
Chemical Physics Reviews,
Journal Year:
2025,
Volume and Issue:
6(1)
Published: Feb. 3, 2025
Understanding
the
long-time
dynamics
of
complex
physical
processes
depends
on
our
ability
to
recognize
patterns.
To
simplify
description
these
processes,
we
often
introduce
a
set
reaction
coordinates,
customarily
referred
as
collective
variables
(CVs).
The
quality
CVs
heavily
impacts
comprehension
dynamics,
influencing
estimates
thermodynamics
and
kinetics
from
atomistic
simulations.
Consequently,
identifying
poses
fundamental
challenge
in
chemical
physics.
Recently,
significant
progress
was
made
by
leveraging
predictive
unsupervised
machine
learning
techniques
determine
CVs.
Many
require
temporal
information
learn
slow
that
correspond
long
timescale
behavior
studied
process.
Here,
however,
specifically
focus
can
identify
corresponding
slowest
transitions
between
states
without
needing
trajectories
input,
instead
using
spatial
characteristics
data.
We
discuss
latest
developments
this
category
briefly
potential
directions
for
thermodynamics-informed
Language: Английский
Machine Learning of Slow Collective Variables and Enhanced Sampling via Spatial Techniques
Published: Feb. 14, 2025
Understanding
the
long-time
dynamics
of
complex
physical
processes
depends
on
our
ability
to
recognize
patterns.
To
simplify
description
these
processes,
we
often
introduce
a
set
reaction
coordinates,
customarily
referred
as
collective
variables
(CVs).
The
quality
CVs
heavily
impacts
comprehension
dynamics,
influencing
estimates
thermodynamics
and
kinetics
from
atomistic
simulations.
Consequently,
identifying
poses
fundamental
challenge
in
chemical
physics.
Recently,
significant
progress
was
made
by
leveraging
predictive
unsupervised
machine
learning
techniques
determine
CVs.
Many
require
temporal
information
learn
slow
that
correspond
long
timescale
behavior
studied
process.
Here,
however,
specifically
focus
can
identify
corresponding
slowest
transitions
between
states
without
needing
trajectories
input,
instead
using
spatial
characteristics
data.
We
discuss
latest
developments
this
category
briefly
potential
directions
for
thermodynamics-informed
Language: Английский
Spectral Map for Slow Collective Variables, Markovian Dynamics, and Transition State Ensembles
Journal of Chemical Theory and Computation,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 12, 2024
Understanding
the
behavior
of
complex
molecular
systems
is
a
fundamental
problem
in
physical
chemistry.
To
describe
long-time
dynamics
such
systems,
which
responsible
for
their
most
informative
characteristics,
we
can
identify
few
slow
collective
variables
(CVs)
while
treating
remaining
fast
as
thermal
noise.
This
enables
us
to
simplify
and
treat
it
diffusion
free-energy
landscape
spanned
by
CVs,
effectively
rendering
Markovian.
Our
recent
statistical
learning
technique,
spectral
map
[Rydzewski,
J.
Language: Английский