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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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3637261,0891,452 · Jun 202019922001200920172026
48 results for Neural Sampling Machines

Efficiently samples sequences without replacement for machine learning models.

problem Generating diverse outputs from sequential models without duplicates.
method Incremental sampling procedure for randomized programs, including neural models.
result Efficacy and flexibility of incremental sampling for large output spaces.

The Gumbel-max trick and its extensions simplify sampling from categorical distributions in machine learning.

problem Sampling from categorical distributions with unnormalized probabilities.
method Extensions of the Gumbel-max trick for various applications.
result Simplified and efficient methods for sampling and gradient estimation.

This study shows neural nets can approximate Turing machines with meaningful statistical properties.

problem Theoretical limitations in approximating Turing machines with neural networks.
method Formal definition of statistically meaningful approximation, analysis of boolean circuits and Turing machines using neural nets.
result Transformers can statistically meaningfully approximate Turing machines with polynomial sample complexity.

Shapley Homology measures sample influence on neural networks' manifold topology.

problem Assumption of iid samples simplifies manifold analysis in machine learning.
method Shapley Homology framework quantifies sample influence on neural networks' manifold topology.
result Higher influence scores correlate with greater impact on neural network accuracy.

Igeood detects out-of-distribution samples using information geometry.

problem Out-of-distribution (OOD) detection in machine learning systems.
method Igeood uses the Fisher-Rao geodesic distance to detect OOD samples from any pre-trained neural network.
result Igeood outperforms state-of-the-art methods on various network architectures and datasets.

RBMs learn archetypes when trained on blurred copies of them, revealing a critical sample size.

problem Determining the critical sample size for RBMs to learn archetypes.
method Formal equivalence between RBMs and Hopfield networks, statistical-mechanics of disordered systems, Monte Carlo simulations.
result A phase diagram highlights regions where learning can be accomplished.

A theorem for debiasing machine learning with finite sample guarantees.

problem Calculating confidence intervals for machine learning functionals.
method Debiased machine learning based on bias correction and sample splitting.
result Nonasymptotic debiased machine learning theorem with finite sample guarantees.

New method uses active importance sampling for rare event optimization in high-dimensional problems.

problem Optimizing complex, high-dimensional functions with rare events.
method Combines rare events sampling with neural network optimization.
result Importance sampling reduces asymptotic variance, improving generalization.

Study improves prediction accuracy and uncertainty for mobile sensor data using randomized neural networks.

problem Improving prediction accuracy and uncertainty for mobile sensor data.
method Cross-validation and uncertainty determination for randomized neural networks.
result Improved out-of-sample performance and confidence intervals for prediction error.

Imbalanced data classification problem has always been a popular topic in the field of machine learning research. In order to balance the samples between majority and minority class. Oversampling algorithm is used to synthesize new minority class samples, but it could bring in noise. Pointing to the noise problems, thi…

2019-08-30abs ↗pdf ↗

Study rare-event simulation for neural networks and random forests.

problem Safety evaluation and robustness quantification of machine learning models.
method Importance sampling scheme integrating large deviations and sequential mixed integer programming.
result Efficiency guarantees and numerical demonstrations for various neural network architectures.

A real-time federated neural architecture search approach reduces costs and improves performance.

problem High communication and computational demands in federated learning for large models.
method Evolutionary approach with double-sampling technique to optimize model performance and reduce costs.
result Effective real-time federated neural architecture search for deep models on edge devices.

Proposes a new information-theoretic framework for analyzing deep neural networks.

problem Difficulty in analyzing deep neural networks using existing theoretical frameworks.
method Introduces an information-theoretic framework with new notions of regret and sample complexity.
result Establishes sample complexity bounds for deep neural networks that are width-independent and linear in depth.

New algorithms sample from complex path measures using neural networks.

problem Sampling from posterior path measures under a general prior process.
method Combines controlled equilibrium dynamics and optimization in infinite-dimensional probability space.
result The algorithms can be integrated with neural networks for learning target trajectory ensembles.

NSMs use always-on stochasticity to normalize activations, improving convergence and performance.

problem Improving the robustness and generalizability of deep neural networks.
method Developed Neural Sampling Machines (NSMs) using always-on multiplicative stochasticity and simple threshold neurons.
result NSMs exhibit self-normalizing properties similar to Weight Normalization, speeding up convergence and preventing internal covariate shift.

New methods improve uncertainty in machine learning predictions for asset returns.

problem Uncertainty in machine learning predictions for asset returns.
method Developed new methods to construct forecast confidence intervals for expected returns from neural networks.
result Neural network forecasts of expected returns have the same asymptotic distribution as classic nonparametric methods, enabling standard error calculation.

Machine learning models accurately predict molecular magnetic anisotropy tensors.

problem Accurately modeling molecular magnetic anisotropy tensors.
method Gaussian-moment neural-network approach for machine learning.
result Achieved accuracy of 0.3--0.4 cm1^{-1} for magnetic anisotropy tensor predictions.

This paper introduces a neural sampler for scalable sampling from complex distributions.

problem Efficiently sampling from high-dimensional un-normalized distributions.
method Neural implicit sampler trained with KL and Fisher divergence methods.
result The neural sampler generates large batches of samples with low computational costs.

This study compares machine learning methods for high-cardinality categorical variables.

problem Machine learning struggles with high-cardinality categorical variables.
method Empirical comparison of tree-boosting, deep neural networks, and linear mixed effects models.
result Tree-boosting with random effects outperforms deep neural networks with random effects.

We analyze how kernel machines and neural networks learn different frequency modes of the target function as data size increases.

problem Understanding how kernel machines and neural networks learn different frequency modes of the target function as data size increases.
method Theoretical methods from Gaussian processes and statistical physics, combined with simulations on synthetic data and MNIST dataset.
result Kernel machines and neural networks fit successively higher spectral modes of the target function as the size of the training set grows.

Paper introduces a neural network training algorithm for noisy data that achieves optimal parameters and replicates real-world behaviors.

problem Theoretical gap between universal approximation theorems and practical machine learning with noisy data.
method Randomized training algorithm for neural networks trained on noisy data samples.
result Trained neural networks achieve optimal parameters and exhibit real-world behaviors like sub-linear complexity and interpolation.

GPU-accelerated particle methods outperform neural samplers in LFT benchmarks.

problem High-dimensional multimodal sampling problems in lattice field theory.
method GPU-accelerated particle Monte Carlo methods (Sequential Monte Carlo and nested sampling).
result These methods match or outperform neural samplers in sample quality and wall-clock time.

EBR improves NMT by re-ranking samples drawn from MLE-trained models.

problem Discrepancy between MLE and BLEU score in neural machine translation.
method Train an energy-based model to mimic BLEU score, then use it for re-ranking.
result EBR consistently improves NMT performance by +4 BLEU points on IWSLT'14 German-English.

Deep neural networks correct Mie scattering in FTIR spectra of biological samples.

problem Mie scattering obscures biochemically relevant spectral information in FTIR spectra of biological samples.
method Deep neural networks to approximate the preprocessing function that removes Mie scattering.
result The model is faster and more generalizable across different tissue types.

New method corrects ML for informative sampling in time-series treatment outcomes.

problem Informative sampling in irregularly observed data hinders accurate treatment outcome forecasting.
method Formalized as covariate shift, proposed inverse intensity-weighting framework, TESAR-CDE.
result TESAR-CDE effectively learns treatment outcomes under informative sampling.

The paper argues that machine learning is a falsificationist process.

problem The role of falsification in machine learning is underexplored.
method The paper presents a falsificationist account of artificial neural networks, emphasizing empirical risk minimization and implicit regularization.
result Artificial neural networks can be seen as a falsificationist process, rejecting inadequate prediction rules.

New method trains neural samplers to sample from multi-modal distributions efficiently.

problem Mode-seeking behavior of reverse KL divergence hinders effective sampling from multi-modal target distributions.
method Minimizing reverse diffusive KL divergence along diffusion trajectories of model and target densities.
result Demonstrated enhanced sampling performance across various multi-modal distributions.

This paper provides a tutorial on Boltzmann Machines and Deep Belief Networks.

problem Understanding and applying Boltzmann Machines and Deep Belief Networks.
method Explains the structures, conditional distributions, Gibbs sampling, training methods, and deep belief networks of RBMs.
result Comprehensive overview of RBMs and DBNs, useful in various fields.

Efficiently tests machine learning models with minimal labeled data.

problem Guaranteeing the performance of machine learning models and preventing failures.
method Proposes a novel framework using Bayesian neural networks and data augmentation for efficient testing.
result Metrics estimations by the proposed method are significantly better than existing baselines.

MDNS generates samples from complex discrete distributions efficiently.

problem Learning neural samplers for discrete state spaces with multi-modal distributions.
method A novel framework using stochastic optimal control of continuous-time Markov chains.
result MDNS outperforms other methods in generating accurate samples from high-dimensional, multi-modal distributions.

Study on consistency of ML methods for moving objects in non-stationary environments.

problem Consistency of machine learning methods for moving objects in non-stationary environments.
method Least squares, ridge regression, and s\ell_s-penalized least squares methods under non-stationary spatial-temporal sampling.
result Consistency and asymptotic normality of the estimates under weak conditions.