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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

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48 results for physical construction

Genetic Programming constructs features for physics experiments, improving classification accuracy.

problem Lack of interpretable feature construction for experimental physics.
method Combining Genetic Programming with dimensional consistency constraints.
result Constructed features improve classification accuracy by a significant margin.

Enhances machine learning for high-energy physics data by embedding feature construction.

problem Improving machine learning performance in high-energy physics data analysis.
method Integrates feature construction directly into tree-based model training, adapting to physics constraints.
result Significant improvement in classification scores with fewer interpretable features.

Develops neural networks for learning physics of complex systems by enforcing thermodynamics principles.

problem Learning physics of complex systems from incomplete experimental data.
method Integrates port-metriplectic formalism with neural networks to enforce thermodynamics principles.
result Neural networks can learn physics of complex systems by parts, reducing learning burden.

Paper constructs exotic spacetimes with same physical properties.

problem Whether two topologically identical manifolds can have different geometries.
method Computational approach to produce physical models on exotic spheres.
result Lorentzian metrics on homeomorphic but not diffeomorphic manifolds with same physical properties.

The author exposes the metrical multi-time Lagrange geometry of physical fields which naturally generalizes the classical Lagrangian developped by Miron and Anastasiei. In other words, one constructs a natural theory of physical fields on the 1-jet fibre bundle, attached to a Kronecker h-regular multi-time Lagrangian w…

2000-09-12abs ↗pdf ↗

A new method combines multifidelity techniques to improve model accuracy with limited data.

problem Improving model accuracy with sparse accurate observations and stochastic simulation models.
method Combines bifidelity and CoKriging methods to estimate empirical statistics and construct a Gaussian process.
result Preserves linear physical constraints up to an error bound, leading to accurate model construction.

This review discusses G2G_{2}-Manifolds and their role in M-Theory compactifications.

problem Understanding the mathematical structure of G2G_{2}-Manifolds for M-Theory compactifications.
method Mathematical and physical considerations of G2G_{2}-Manifolds and their compactifications.
result Progress in constructing and understanding G2G_{2}-Manifolds.

This talk reviews some mathematical and physical ideas related to the notion of dimension. After a brief historical introduction, various modern constructions from fractal geometry, noncommutative geometry, and theoretical physics are invoked and compared.

2005-02-01abs ↗pdf ↗

Light-based attacks can misclassify images without altering physical objects.

problem Physical attacks on deep learning classifiers are limited by the ability to modify inputs directly.
method Constructs an experimental setup with a light projection source, object, and camera. Uses differential evolution to select light patterns.
result Projected light can degrade classification accuracy from 98% to 22% for 2D objects and from 89% to 43% for 3D objects.

PICN learns physical fields from shallow neural networks, improving AI in multi-physical systems.

problem Challenges in modeling and forecasting multi-physical systems due to data scarcity and noise.
method Physics-informed convolutional network (PICN) combining CNN and physical laws, using deconvolution and convolution layers.
result PICN effectively solves and estimates nonlinear physical operator equations and recovers physical information from noisy observations.

Improves machine learning models by incorporating physical laws into feature maps.

problem Lack of model interpretability in classical machine learning approaches.
method Physics-informed feature maps constructed from physical laws and dimensional analysis.
result Enhanced model interpretability and potential discovery of new physical equations.

Physics-guided models improve lake temperature and quality predictions.

problem Predicting and monitoring water temperature and quality in lakes.
method Combining physics-based models and recurrent neural networks with physical constraints.
result Improved prediction accuracy and scientific consistency.

Study finds physical momentum portfolios in Indian stock market yield higher returns than benchmarks.

problem Determining abnormal returns for physical momentum portfolios in the Indian stock market.
method Constructed physical momentum portfolios for daily, weekly, monthly, and yearly timescales, evaluated historical returns and risk profiles.
result Daily time scale physical momentum portfolios showed the strongest reversal with a 16-fold profit.

A robot learns environmental fields using physics-based models and Bayesian methods.

problem Accurately learning complex environmental fields from limited robot measurements.
method Bayesian framework with Gaussian processes to select and update physics-based models in real-time.
result The robot's learned flow field approximates real flow better than prior solutions and data-driven methods.

Paper integrates ML with physics models for engineering and environmental challenges.

problem Complex science and engineering problems require new methodologies combining physics-based models and ML.
method Structured overview of integrating physics-based models with ML techniques.
result Taxonomy of existing techniques and potential research gaps identified.

Unified access package for fundamental physics datasets simplifies machine learning.

problem Lack of unified access to datasets from multiple fundamental physics disciplines.
method Unified Python package with common interface and reference models.
result Graph-based neural networks perform similarly to dedicated methods on various datasets.

Study axisymmetric waves on extremal Kerr spacetime using physical-space estimates.

problem Obtain integrated local energy decay estimates for axisymmetric waves on extremal Kerr backgrounds.
method Use physical-space analysis and a method introduced by Stogin, simplifying Aretakis' derivation.
result Extend Morawetz estimates to extremal Kerr spacetime using purely classical currents.

We find ways to make physical signals misclassified by computer vision models.

problem Vulnerability of signal classifiers to adversarial perturbations in physical signals.
method Solving PDE-constrained optimization problems to construct imperceptible perturbations.
result Effective and physically realizable adversarial perturbations can be computed for machine learning models.

PhIK uses physics models to improve Gaussian process regression.

problem Improving Gaussian process regression for complex systems.
method Constructs non-stationary Gaussian processes from physics models, avoiding hyperparameter optimization.
result Guaranteed physical constraints in predictions and error estimates.

L-GATr transforms high-energy physics data using geometric algebra and Lorentz symmetry.

problem Extracting scientific understanding from particle-physics experiments with high precision and efficiency.
method L-GATr, a geometric algebra Transformer, representing data in 4D space-time and being equivariant under Lorentz transformations.
result L-GATr achieves performance comparable to or better than domain-specific baselines on regression, classification, and generative tasks.

Deep learning framework for uncertainty quantification in physics.

problem Uncertainty in systems governed by non-linear differential equations.
method Physics-informed neural networks with adversarial inference.
result Effective training of deep generative models for physical systems.

The study explores properties of a specific type of spacetime.

problem Discussing geometric and physical properties of hyper-generalised quasi-Einstein spacetime.
method Analyzing various types of pseudosymmetry and Ricci symmetry over the spacetime.
result Proved the existence of a non-trivial hyper-generalised quasi-Einstein spacetime.

Efficiently accelerates Feldman-Cousins method using Gaussian processes.

problem Slow computation of confidence intervals in high-energy physics.
method Gaussian process acceleration of Feldman-Cousins method.
result Confidence intervals can be computed 5-10 times faster with similar accuracy.

Bayesian model uses physics constraints for semi-supervised surrogate learning.

problem Lack of labeled data in fine-grained model training.
method Probabilistic generative model with virtual observables.
result Enables semi-supervised training with unlabeled data.

Physics-informed GP regression solves eigenvalue problems by identifying non-trivial eigenspaces.

problem Solving eigenvalue problems of linear operators with trivial solutions.
method Constructing a transfer function-type indicator using physics-informed Gaussian Process posterior.
result The posterior covariance is non-trivial only for eigenvalues of the operator, indicating non-trivial eigenspaces.

Bayesian hybrid models correct for missing physics in machine learning.

problem Systematic bias in machine learning models.
method Fusing physics-based insights with machine learning constructs, using Bayesian calibration and stochastic programming.
result Bayesian hybrid models outperform pure machine learning approaches with less data.

This thesis develops the theory of bundle gerbes and examines a number of useful constructions in this theory. These allow us to gain a greater insight into the structure of bundle gerbes and related objects. Furthermore they naturally lead to some interesting applications in physics.

2003-12-09abs ↗pdf ↗

GINNs combine deep learning with PGMs for physics-based multiscale systems.

problem Intrinsic computational bottlenecks and lack of sufficient data for QoI estimation.
method Hybrid approach combining deep learning with probabilistic graphical models, informed by structured priors for CVs.
result GINNs produce tight confidence intervals for non-Gaussian QoIs.