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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.

169,051 papers · 148 categories

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66132197263 · May 202619922001200920182026
48 results for regularisation theory

Improves parameter selection for denoising with elastic net.

problem Challenges in selecting optimal parameters for denoising.
method Combines statistical learning theory and regularisation theory to approximate optimal elastic net parameters.
result Explicit error bounds on accuracy of approximated parameter and regularisation solution.

Generalised regularisation equals robustness for exotic function classes.

problem Adversarial examples highlight the need for robust models in exotic function classes.
method Equality result linking distributional robustness and Lipschitz regularisation.
result Certified robustness of Lipschitz-regularised models with mild assumptions.

This paper improves inverse problem solving with weakly convex regularisers and proves convergence.

problem Improving solution methods for inverse problems.
method Generalised formulation of convergent regularisation using weakly convex regularisers, and proof of convergence for primal-dual hybrid gradient method.
result Proves convergence of primal-dual hybrid gradient method for variational problems and shows improved performance with IWCNNs.

This work uncovers algorithm-dependent regularisation in diffusion models.

problem Understanding and improving generalisation in high-dimensional diffusion models.
method Algorithmic stability and score stability analysis.
result Identifies multiple sources of implicit regularisation unique to diffusion models.

Noise regularisation in deep nets makes them behave like Gaussian processes.

problem Understanding the behavior of noise-regularized deep neural networks as Gaussian processes.
method Analyzing the impact of noise regularisation on neural network Gaussian processes (NNGPs) and relating their behavior to signal propagation theory.
result Best performing NNGPs have kernel parameters corresponding to a specific initialisation scheme.

Theory for RLHF generalization under reward shift and clipped KL.

problem Theoretical understanding of RLHF generalization, especially with reward shift and clipped KL.
method Developed generalization theory for RLHF, accounting for reward shift and clipped KL.
result Presented generalization bounds for RLHF, suggesting generalization error from sampling, reward shift, and KL clipping.

Paper advances sparse regularisation theory for measures with new kernel insights.

problem Estimating sparse measures from noisy observations using continuous sparse regularisation.
method Develops new continuous sparse regularisation theory on measures with Beurling-LASSO, introduces kernel switch analysis.
result Proves the ``sinc-4'' kernel satisfies a technical LPC assumption for error bounds.

Critical initialisation strategies are identified for noisy ReLU networks.

problem Understanding signal propagation in noisy rectifier neural networks.
method Developed a new framework for signal propagation in stochastic regularized neural networks, incorporating various noise distributions.
result Critical initialisation strategies for multiplicative noise (e.g. dropout) are identified, but not for additive noise.

New insights into how neural networks learn features, especially when they are very wide.

problem Understanding how gradient flow in wide neural networks selects solutions, especially in the feature-learning regime.
method Axiomatizing the canonical regularizer as a function-space energy and lift, and deriving geodesic ridge for the feature-learning regime.
result Gradient flow in feature-learning networks biases towards ridge regularization, distorting the inductive bias and damaging pretrained networks.

GNIs induce a regulariser that penalizes high-frequency components in neural network activations.

problem Understanding the regularizing effect of Gaussian noise injections on neural network activations.
method Deriving the explicit regularizer by marginalizing out injected noise and analyzing its effect in the Fourier domain.
result GNIs induce a regularizer that produces calibrated classifiers with large margins.

ResNets can approximate input distances under certain conditions, but existing theory is flawed.

problem Theoretical justification for regularizing ResNets to preserve input distances is flawed.
method Frequency analysis perspective to explain effectiveness of regularization schemes.
result Regularization schemes enforce a lower Lipschitz bound on low-frequency projections of images.

A Python package solves source duplication in single channel LVMs using spectral regularisation.

problem Source duplication in LVMs hampers their practical use in single channel applications.
method Spectral regularisation term added to address source duplication issue.
result Spectral regularisation framework enables easier investigation and utilisation of LVMs.

New framework monitors neural network training and reveals regularisation mechanisms.

problem Overfitting in neural networks and the need for explicit regularizers.
method Model Gradient Similarity (MGS) framework to measure and monitor regularisation.
result Explicit regularizers increase Model Gradient Similarity (MGS).

Denoising autoencoders (DAEs) have proven useful for unsupervised representation learning, but a thorough theoretical understanding is still lacking of how the input noise influences learning. Here we develop theory for how noise influences learning in DAEs. By focusing on linear DAEs, we are able to derive analytic ex…

2018-06-14abs ↗pdf ↗

A method improves Cryo-EM 3D map refinement by regularizing rotation estimation.

problem Noise-robustness vs. data-consistency in Cryo-EM 3D map reconstruction.
method Ellipsoidal support lifting (ESL) for regularizing and approximating the global minimizer over Riemannian manifolds.
result The induced bias due to regularizing effect of ESL estimates better rotations than global optimisation.

Graph-dependent implicit regularisation improves Distributed SGD for convex problems.

problem Improving convergence rates in distributed stochastic subgradient descent.
method Graph-dependent implicit regularisation strategies for Distributed SGD.
result Established statistical learning rates retaining centralised guarantees.

Novel approach finds implicit regularisation in two-player games using BEA.

problem Understanding implicit regularisation in two-player games.
method Using backward error analysis to construct continuous-time flows with gradient-eligible vector fields.
result Identifies new implicit regularisation effects in two-player games.

Regularization preserves topological data structure in autoencoders.

problem Ensuring topological data structure preservation in autoencoders.
method Regularization using Legendre nodes to preserve manifold embedding.
result Regularized autoencoders ensure one-to-one embedding of data manifolds.

Regularisation improves ML classifier stability against poisoning attacks.

problem Poisoning attacks degrade ML algorithms' performance; current attacks ignore hyperparameters.
method Proposed a multiobjective bilevel optimisation problem to consider hyperparameter effects.
result L2L_2 regularisation enhances learning algorithm stability and mitigates poisoning attacks.

Investigates gradient descent dynamics and introduces new regularisation methods.

problem Understanding and mitigating gradient descent instabilities and interactions with smoothness regularisation.
method Derives continuous-time flows to account for discretisation drift, constructs learning rate schedules and regularisers.
result New regularisation methods improve performance in reinforcement learning.

We provide a detailed proof of Hawking's singularity theorem in the regularity class C1,1C^{1,1}, i.e., for spacetime metrics possessing locally Lipschitz continuous first derivatives. The proof uses recent results in C1,1C^{1,1}-causality theory and is based on regularisation techniques adapted to the causal structure.

2014-11-17abs ↗pdf ↗

Researchers compare different gradient methods for ridge regression, finding conjugate gradients have similar performance.

problem Comparing statistical properties of different gradient methods in ridge regression.
method Explicit non-standard error decomposition to bound prediction error of conjugate gradient iterates.
result Conjugate gradient iterates share optimality properties with gradient flow and ridge regression up to a constant factor.

Study on GD and SGD over diagonal networks, focusing on stepsizes and regularisation.

problem Understanding the impact of stochasticity and large stepsizes on gradient descent and SGD solutions.
method Investigation of GD and SGD over diagonal linear networks with macroscopic stepsizes, proving convergence and characterizing solutions.
result Large stepsizes consistently benefit SGD for sparse regression problems, but can hinder GD recovery of sparse solutions, especially in the edge of stability regime.

This work shows how penalising bias terms in norm regularisation leads to sparse solutions.

problem Understanding the relation between parameter norm regularization and the sparsity of neural network solutions.
method Analyzes one hidden ReLU layer networks with unidimensional data, showing the norm required for function representation and the importance of the bias term's norm.
result Penalising the bias terms in regularisation leads to sparse solutions, enforcing the uniqueness and sparsity of the minimal norm interpolator.

Regularizes ML algorithms for robust multivariate analysis against distribution shifts.

problem Ensuring robustness of multivariate analysis algorithms against distribution shifts.
method Integrates a causal regularisation term into the loss function of multivariate analysis algorithms.
result Demonstrates improved out-of-distribution generalisation with reduced-rank regression and partial least squares.

Unified theory for adaptive image convolutions using metric perspectives.

problem Fixed kernels in convolutions limit adaptability in image processing.
method Metric perspective on images as 2D manifolds with local distances, proposing metric convolutions.
result Metric convolutions provide better generalisation and competitive performance.

Study on how noise and variation-norm regularisation help shallow ReLU networks use fewer neurons.

problem Understanding how shallow ReLU networks use a finite number of neurons in the infinitely wide limit.
method Analysis of two regularisation strategies: noise injection and variation-norm.
result Both regularisation methods minimize functions with a finite number of neurons, regardless of overparametrisation.

This work optimizes RL algorithms using entropy regularisation for continuous-time LQ problems.

problem Designing RL algorithms to balance exploration and exploitation in noisy environments.
method Entropy regularisation in two formulations: exploratory control and proximal policy update.
result Regret of O(N)\mathcal{O}(\sqrt{N}) for both learning algorithms over NN episodes.

Paper studies particle method for LSV model calibration, proving convergence and error bounds.

problem Calibration of local-stochastic volatility models with open well-posedness question.
method Regularized Euler--Maruyama scheme for particle approximation of McKean--Vlasov dynamics.
result Strong convergence of the Euler--Maruyama scheme with rate 1/2 in step-size.

Global analysis of Dixmier traces and Wodzicki residues on compact Lie groups.

problem Computing Dixmier traces and Wodzicki residues on compact Lie groups.
method Global quantisation approach, using global symbols and representation theory.
result Explicit formulae for Dixmier traces and Wodzicki residues on compact Lie groups.

Study on neural networks with regularisation and its impact on training dynamics.

problem Understanding the dynamics of neural networks with regularization.
method Established explicit dynamics for neural networks with a regularizing term, linearizing around initialisation.
result The regularisation term modifies the standard NTK dynamics, leading to new insights into network training.

Regularising for invariance to data augmentation improves machine learning models.

problem Improving generalization in machine learning models through data augmentation.
method Explicit regularisation to encourage invariance at the level of individual model predictions.
result Explicit regularisation improves generalization and equalizes performance differences between objectives.

Unified understanding of three continual learning regularisation methods.

problem Maintaining knowledge of earlier tasks without re-accessing them.
method Three regularisation approaches: Elastic Weight Consolidation (EWC), Synaptic Intelligence (SI), and Memory Aware Synapses (MAS).
result EWC, SI, and MAS are linked to the same theoretical quantity, the square root of the Fisher Information.

The paper studies mm-positive currents and line bundles on complex manifolds.

problem Understanding mm-positive currents and their properties on complex manifolds.
method Introducing mm-plurisubharmonic functions, proving vanishing theorems, and regularisation theorems using viscosity solutions.
result Global and local regularisation theorems for mm-semi-positive currents.

SPReD uses uncertainty to decide imitation from demonstrations.

problem Learning from sparse rewards with few demonstrations.
method Ensemble methods to model Q-value distributions, probabilistic and advantage-based uncertainty quantification.
result Significant gains in reinforcement learning across multiple tasks.

Novel method decorrelates neurons for better deep learning model generalization.

problem High correlations between neurons limit deep learning model generalization.
method Regularization terms from minimum spanning tree of neuron cliques, using correlation dissimilarities.
result Our regularizers outperform existing methods and minimize neuron redundancies.

ICCNLS models complex relationships as convex and concave components.

problem Complex input-output relationships with affine ambiguity.
method Sub-gradient constrained affine functions, global orthogonality constraints, L1, L2, and elastic net regularisation.
result Improved predictive accuracy and model simplicity compared to conventional methods.

We present a probabilistic viewpoint to multiple kernel learning unifying well-known regularised risk approaches and recent advances in approximate Bayesian inference relaxations. The framework proposes a general objective function suitable for regression, robust regression and classification that is lower bound of the…

2011-03-04abs ↗pdf ↗