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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.

168,742 papers · 148 categories

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4998147196 · May 202619922001200920172026
48 results for Residual Fields

Promotes spectral functionals to noncommutative fields and proves a theorem.

problem Spectral functionals on noncommutative fields and manifolds with boundary.
method Carries out promotion to spectral functionals, associates with noncommutative residue, and proves theorem.
result Proves Dabrowski-Sitarz-Zalecki type theorem for statistical de Rham Hodge operators on manifolds with boundary.

We prove a holomorphic residue localization formula for odd holomorphic vector fields on compact complex supermanifolds whose fermionic and bosonic dimensions coincide. Under isolated non-degeneracy hypotheses on the reduced zero set, we give an explicit local residue formula.

2019-09-28abs ↗pdf ↗

Study shows how deep residual networks can be analyzed as shallow network ensembles for optimization.

problem Understanding why deep neural networks can be trained to zero loss despite non-convex optimization landscapes.
method Mean-field analysis of deep residual networks, focusing on their continuum limit as a two-layer network.
result Derives the first global convergence result for multilayer neural networks in the mean-field regime.

Enhanced image denoising with MWRDCNN using residual dense blocks.

problem Image denoising with improved performance and robustness.
method Multi-wavelet residual dense convolutional neural network (MWRDCNN) with residual dense blocks (RDBs).
result Significantly improved performance in image denoising compared to existing techniques.

Spatial Adapter adds structured spatial representation to frozen predictors.

problem Efficiently adding spatial structure to pre-trained models.
method Structured spatial decomposition and closed-form covariance for residual fields.
result Adapter improves spatial prediction and uncertainty quantification.

Given a prime pp, a group is called residually pp if the intersection of its pp-power index normal subgroups is trivial. A group is called virtually residually pp if it has a finite index subgroup which is residually pp. It is well-known that finitely generated linear groups over fields of characteristic zero are …

2010-04-21abs ↗pdf ↗

Study Transformer layers under cross-entropy training using mean field control.

problem Understanding the behavior of Transformer layers in cross-entropy training.
method Continuous-depth mean field control analysis, treating depth as time and layer parameters as controls.
result Derivation of a Pontryagin condition for the limiting population problem, involving the softmax residual.

Residual networks with depthwise hyperparameter scaling transfer optimal hyperparameters across width and depth.

problem The challenge of hyperparameter tuning in deep learning, especially for large models.
method Combining μμP parameterization with residual networks having a residual branch scale of 1/extdepth1/\sqrt{ ext{depth}}.
result Optimal hyperparameters transfer across width and depth in residual networks trained with this parameterization.

Field theory explains optimal scaling in ResNets for signal propagation.

problem Understanding optimal scaling parameter for ResNet performance.
method Finite-size field theory for ResNets to study signal propagation and scaling.
result Analytical expressions for optimal scaling parameter, independent of other hyperparameters.

SRFRN accelerates image super-resolution using shallow residual units.

problem High computational complexity and time in deep learning image super-resolution.
method SRFRN uses a bicubic interpolated low-resolution image and residual representative units (RFR) for faster and more efficient high-resolution image reconstruction.
result SRFRN achieves superior performance and faster execution time compared to existing methods.

Deep heteroskedastic models overfit, showing a phase transition with regularization strength.

problem Overfitting in deep heteroskedastic regression models.
method Theoretical framework based on statistical field theory, empirical verification, and hyperparameter simplification.
result A phase transition in model behavior with varying regularization strength.

Statistical generative models for molecular graphs attract attention from many researchers from the fields of bio- and chemo-informatics. Among these models, invertible flow-based approaches are not fully explored yet. In this paper, we propose a powerful invertible flow for molecular graphs, called graph residual flow…

2019-09-30abs ↗pdf ↗

The paper explores a new method for landmark matching using sub-Riemannian geometry and neural networks.

problem Finding a time-dependent vector field to warp points from an initial set to a target set.
method Sub-Riemannian geometry and residual neural networks.
result Demonstrates the importance of regularization in landmark matching.

Model predicts option movements using residual transactions for better market timing.

problem Predicting option movements using standard metrics like open interest and trading volume.
method Analyzes residual transactions, integrates machine learning and regression techniques.
result Identifies early indicators of market trends for better option price forecasting.

Introduces a neural network-based method for efficient state and parameter estimation in complex systems.

problem Efficiently estimating state paths and parameters from noisy measurements in high-dimensional nonlinear systems.
method Bayesian Information Field Theory with neural network parameterization and optimization algorithms.
result Proposes a method to simplify and enrich state path parameterizations using neural networks, improving inference accuracy.

The paper computes metrics and Einstein tensors on even-dimensional manifolds.

problem Computing metrics and Einstein tensors on even-dimensional Riemannian manifolds.
method Development of spectral Einstein functionals and equivariant Bismut Laplacian.
result Explicit computation of the equivariant noncommutative residue density.

Proves a Baum--Bott formula for foliations by curves with logarithmic terms.

problem Analyzing singularities and smoothness in foliations by curves.
method Logarithmic Baum--Bott residues for foliated triples (X,F,D)(X, \mathcal{F}, D), relating to Poincaré's Problem and GSV indices.
result Logarithmic Baum--Bott residues generalize Aleksandrov logarithmic index for vector fields on hypersurfaces.

New method learns PDE solutions from low-fidelity data.

problem Challenges in learning PDE surrogates with scarce data.
method Flow matching in infinite-dimensional space with conditional neural operators.
result Accurately learns PDE solutions across different resolutions and fidelities.

Improved far-field speaker verification for short utterances in noisy conditions.

problem Challenges in speaker verification on short utterances in uncontrolled noisy environments.
method Used deep neural network architectures (TDNN and ResNet) and experimented with various embedding extractors and training procedures.
result ResNet architectures outperform x-vector approach in speaker verification quality for both long and short utterances.

Reducing volatility proxy improves apparent market correlation dynamics.

problem Attributing apparent slow collective market dynamics to intrinsic or driver inheritance.
method Coupled Ornstein-Uhlenbeck model with VIX proxy, decomposing and controlling for autocorrelation.
result VIX-coupled model reduces effective relaxation time from 298 to 61 trading days, improving fit over bare mean reversion.

We speed up Gaussian process cross-validation calculations and improve model diagnostics.

problem Efficiently calculating cross-validation residuals and their covariances in Gaussian processes.
method Generalized fast Gaussian process leave-one-out formulae to multiple-fold cross-validation, highlighting covariance structures.
result Correcting for residual covariances in cross-validation improves back to Maximum Likelihood Estimation.

Groups with specific properties have vanishing 2\ell^2-Betti numbers.

problem Understanding 2\ell^2-Betti numbers for certain groups.
method Introduced cheap 1-rebuilding property and used structure theorem of Tucker-Drob.
result First 2\ell^2-Betti numbers vanish for specified groups.

The study analyzes deep linear networks from random initialization, capturing dynamics and hyperparameter effects.

problem Understanding training dynamics in deep linear networks from random initialization.
method Theoretical analysis of gradient descent dynamics in deep linear networks with random initialization and large data.
result Captures the 'wider is better' effect and hyperparameter transfer effects, contrasting with neural-tangent parameterization.

A conservative drifting method improves generative modeling by using KDE gradients, proving convergence rates.

problem Improving generative modeling by addressing non-conservatism issues.
method Proposes a conservative drifting method using kernel density estimator gradients to address non-conservatism.
result Proves finite-particle convergence rates for the conservative method, providing explicit quadrature constants.

PIE-PINN estimates elastic properties from noisy, low-res displacement data.

problem Estimating heterogeneous elastic properties from low-resolution, noisy data.
method Probabilistic Physics-Informed Neural Network (PIE-PINN) framework combining B-spline and hierarchical scale model.
result Robust estimation of Young's modulus and Poisson's ratio from noisy, low-resolution displacement data.

The study examines discrete subgroups of PSL2 over non-archimedean fields.

problem Conditions for discrete subgroups of PSL2 over non-archimedean fields.
method Structure theorem for two-generator groups acting by isometries on a Λ-tree, practical algorithms.
result Necessary and sufficient conditions for discrete subgroups of PSL2 over non-archimedean fields.

The paper establishes analogs of Stallings' theorem for group homomorphisms and their nilpotent quotients.

problem Understanding the structure of fundamental groups of geometric objects.
method Develops analogs of Stallings' theorem for group homomorphisms and their nilpotent quotients.
result Derives applications including non-isomorphic number fields and hyperbolic manifolds with isomorphic universal nilpotent quotients.

On a complex curve, we establish a correspondence between integrable connections with irregular singularities, and Higgs bundles such that the Higgs field is meromorphic with poles of any order. The moduli spaces of these objects are obtained by fixing at each singularity the polar part of the connection. We prove that…

2001-11-08abs ↗pdf ↗

In dealing with high-dimensional data sets, factor models are often useful for dimension reduction. The estimation of factor models has been actively studied in various fields. In the first part of this paper, we present a new approach to estimate high-dimensional factor models, using the empirical spectral density of …

2016-11-17abs ↗pdf ↗

It is shown that, up to isometry, all but finitely many closed, orientable hyperbolic 3-manifolds with a given trace field KK admit 0.34 as a Margulis number. This is deduced from a more technical result giving a condition under which max(d(P,xP),d(P,yP))0.34\max(d(P,x\cdot P),d(P,y\cdot P))\ge0.34 for every $P\in\HH^3$, where xx and yy

2009-02-06abs ↗pdf ↗

Regularization helps resolve ambiguity in mean-variance models, improving predictive uncertainty quantification.

problem Signal-to-noise ambiguity in overparameterized mean-variance models.
method Statistical field theory framework to explain phase transition.
result Regularization reduces variability and improves predictive uncertainty quantification.

Residual finiteness is known to be an important property of groups appearing in combinatorial group theory and low dimensional topology. In a recent work [2] residual finiteness of quandles was introduced, and it was proved that free quandles and knot quandles are residually finite. In this paper, we extend these resul…

2019-02-08abs ↗pdf ↗