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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.

169,341 papers · 148 categories

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2.9%5.7%8.6%11.5% · May 202619922001200920182026
48 results for Bayesian Updating

Proposes a new method for nonlinear Bayesian updates using ensemble kernel regression.

problem Nonlinear and non-Gaussian Bayesian updates for complex systems.
method Combines Kalman filtering for observed components and kernel density estimation for unobserved components, with subsampling and clustering.
result Reduces estimation errors in highly nonlinear scenarios compared to standard linear updates.

New method for density estimation without approximating posterior distributions.

problem Challenges in non-smooth data distributions for Bayesian density estimation.
method Autoregressive likelihood decomposition and Gaussian process prior in a quasi-Bayesian framework.
result Achieves state-of-the-art results in small-data regimes.

Bayesian model updating uses VAEs to approximate likelihood with small data.

problem Approximating likelihood for small data sets in structural analysis.
method Uses multimodal VAEs to approximate likelihood, suitable for high-dimensional correlated observations.
result Demonstrates computational efficiency and accuracy compared to original VAE approach.

New method samples triplets from data distributions for training Triplet networks.

problem Training robust Triplet networks with discriminative triplets.
method Bayesian updating of multivariate normal distributions for dynamic class embedding sampling.
result Experimental validation on MNIST and histopathology CRC datasets shows effectiveness of the proposed method.

New algorithm optimizes MCMC sampling for structural dynamic models.

problem Time-consuming retraining of neural networks in MCMC methods.
method Adaptive meta-learning SGHMC algorithm that optimizes sampling strategy.
result Trained sampler can be applied to various problems without retraining.

Paper revisits weighted likelihood bootstrap and extends it to loss-likelihood bootstrap.

problem Generating samples from approximate Bayesian posterior of a parametric model.
method Bayesian nonparametric model with minimising expected negative log-likelihood.
result Loss-likelihood bootstrap method for posterior sampling.

Bayesian uncertainty quantification is flawed, according to new research.

problem Flawed interpretation of Bayesian uncertainty quantification.
method Discussion of Bayesian updating and optimization-based perspective, proposing measures of quality.
result Bayesian uncertainty quantification is not coherent with optimization-based perspective.

Gradient-EM Bayesian meta-learning accelerates adaptation with reduced computation and improved robustness.

problem Efficient and robust adaptation to new tasks with uncertainty assessment.
method Extends Bayesian meta-learning with gradient-EM algorithm, decoupling inner-update from meta-update.
result Improves accuracy with less computation cost and enhanced robustness to uncertainty.

Bayesian approach for learning from synthetic data, improving model accuracy.

problem Lack of statistical properties and robust methods for learning from synthetic data.
method Bayesian paradigm to update model parameters considering synthetic data generating process and learning task.
result Novel approach outperforms standard methods in supervised learning and inference problems.

QBVI uses natural gradients for efficient Bayesian learning.

problem Efficient Bayesian learning in complex models.
method Natural gradient updates in a black-box framework for exponential-family distributions.
result QBVI framework is effective for a wide range of Bayesian inference problems.

The paper examines how updates to probabilistic models influence behavior based on evidence.

problem Understanding how updates to probabilistic models influence behavior based on evidence.
method Study of KL-regularized soft updates as Bayesian posterior updates within a single probabilistic model.
result Posterior updates determine relative incentives but not absolute rewards, which are ambiguous up to context-specific baselines.

Developed a Particle-Gibbs sampler for Bayesian feature allocation models.

problem Intractable exact inference in Bayesian feature allocation models.
method Particle-Gibbs sampler for feature allocation matrix updates.
result PG sampler improves performance of feature allocation models.

Bayesian method improves Federated Learning robustness against corrupted updates.

problem Adversarial attacks on Federated Learning models with unknown number of compromised clients.
method Adaptive Bayesian aggregation based on likelihood of clients being honest.
result Consistently achieves state-of-the-art performance across various attack types.

Bayesian filtering optimizes portfolio weights over time with uncertain parameters.

problem Optimizing portfolios over long periods with unknown parameters.
method Bayesian filtering through dynamic linear models for dynamic parameter estimation.
result Bayesian updating improves portfolio performance and is practical.

The paper proposes a new method for updating neural network parameters using gradient conjugate priors.

problem Learning probability distributions of observed data using neural networks.
method Gradient conjugate prior (GCP) update for neural networks, connecting to log-likelihood maximization.
result The method differs from classical Bayesian updates, leading to different limiting behavior of prior parameters.

Study improves active learning with neural networks for mobile robotics.

problem Efficiently acquiring labeled data for training deep neural networks in mobile robotics.
method Investigated strategies for active learning with Bayesian neural networks in episodic data settings.
result Incremental network updates with final training on accumulated acquisition set yields best performance.

The paper updates Bayesian CMA-ES with normal Wishart and proves lower expected covariance.

problem Improving the Bayesian CMA-ES algorithm with normal Wishart prior.
method Revisits Bayesian CMA-ES, proves lower expected covariance in normal Wishart, and presents a generalized model.
result Proves that the expected covariance is lower in the normal Wishart prior model due to convexity of the inverse.

VCoTTA uses variational Bayesian methods to adapt models under continuous domain shifts.

problem Error accumulation in continual test-time adaptation.
method VCoTTA employs variational Bayesian techniques to update a Bayesian Neural Network (BNN) during testing, combining priors from source and teacher models.
result VCoTTA effectively mitigates error accumulation in CTTA, as shown by experimental results on three datasets.

NeuralSurv models survival analysis with Bayesian uncertainty.

problem Capturing time-varying risk relationships in survival analysis.
method Two-stage data-augmentation scheme, mean-field variational algorithm, coordinate-ascent updates, locally linearized Bayesian neural network.
result Delivers superior calibration compared to state-of-the-art models.

Bayesian Federated Learning improves model reliability in dynamic environments.

problem Uncertainty quantification and robust adaptation in distributed learning.
method Proposes a continual BFL framework using SGLD for sequential updates and continual learning challenges.
result Continual Bayesian updates preserve knowledge and adapt to evolving data.

A new Bayesian filtering method speeds up stochastic Newton optimization.

problem Minimizing log-convex functions using stochastic methods.
method Contextualizes the problem as Bayesian inference, applying Bayesian filtering to update estimates.
result Establishes conditions for diminishing effect of older observations, akin to momentum.

A novel method for learning Bayesian network structures from decentralized data, balancing privacy and efficiency.

problem Privacy and communication costs in learning Bayesian network structures from decentralized data.
method Fed-Sparse-BNSL, combining differential privacy with greedy updates targeting only a few relevant edges per participant.
result Achieves utility close to non-private baselines while offering stronger privacy and communication efficiency.

BRPC online Bayesian calibration handles gradual and abrupt system changes.

problem Aligning model outputs with field observations in evolving systems.
method Bayesian Recursive Projected Calibration (BRPC) for streaming data under simulator mismatch and nonstationarity.
result Improves calibration accuracy under gradual changes and robustness under abrupt regime shifts.

Standard acquisition functions are sufficient for asynchronous Bayesian optimization.

problem Redundant and repeated queries in asynchronous Bayesian optimization.
method Conceptual analysis and theoretical guarantees of standard acquisitions.
result Standard acquisition functions achieve theoretical guarantees equivalent to Thompson sampling in asynchronous settings.

A framework for navigating environments with spatially correlated obstacles and uncertain blockage status.

problem Navigation in environments with spatially correlated obstacles of uncertain blockage status.
method Modeling spatial correlation with Gaussian Random Field, developing Bayesian belief updates, proposing a two-stage learning framework with offline and online phases.
result Consistent performance gains over baselines in environments with adversarial interruptions or clustered natural hazards.

Speed up Bayesian inference for large datasets using subsampling.

problem Bayesian inference in large data problems.
method Data subsampling to speed up Sequential Monte Carlo (SMC) for static Bayesian models.
result Efficiently estimates four generalized linear models and a generalized additive model with large datasets.

Step-DAD improves BED by periodically updating a design policy during experiments.

problem Improving flexibility and robustness in Bayesian experimental design.
method Semi-amortized, policy-based approach that updates a design policy during data collection.
result Consistently superior decision-making and robustness compared to current BED methods.

Paper introduces robust Gaussian process regression without sacrificing computational efficiency.

problem Violation of independent and identically distributed Gaussian observation noise assumption in Gaussian process regression.
method Proves robust and conjugate Gaussian process regression (RCGP) at no additional cost using generalised Bayesian inference.
result RCGP enables exact conjugate closed form updates in all settings where standard GPs admit them.

Test-time training adapts a pretrained model to each prompt via parameter updates, improving accuracy under pretraining-to-test distribution shifts.

problem Improving accuracy of pretrained models under distribution shifts.
method Explaining TTT behavior through a decision-theoretic lens.
result TTT reduces prediction error when updates are spectrally matched to the prompt's signal-to-noise ratio and aligned with query-relevant eigen-directions.

Bayesian inference improved with classifier-based misspecification detection and tempering.

problem Model misspecification in Bayesian inference leads to overly concentrated posteriors.
method Probabilistic classifiers trained on simulated vs. observed data to estimate model misspecification and tempering level.
result Estimation of negative KL divergence provides useful diagnostic and update method.