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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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134267401534 · Jun 202019922001200920182026
48 results for bidirectional sampling

BiCoGAN improves cGANs by disentangling latent and auxiliary variables.

problem Improving disentanglement of latent and auxiliary variables in cGANs.
method BiCoGAN uses bidirectional training with extrinsic factor loss and dynamically-tuned importance weight.
result BiCoGAN encodes auxiliary variables more accurately and disentangles latent and auxiliary variables effectively.

We improve GANs by enforcing reproducibility and using non-uniform sampling.

problem Overrepresentation of certain samples in GANs' marginal log-likelihood.
method Enforce reproducibility through matching empirical distribution to prior, use non-uniform sampling for mini-batch selection.
result Improved quality and variety in generated samples, validated on CIFAR10, Fashion MNIST, and CelebA.

Delayed-RNN approximates stacked and bidirectional RNNs.

problem Improving RNN expressiveness and representational capacity.
method Weight-constrained delayed-RNN, equivalent to stacked-RNNs, with partial acausality.
result Delayed-RNN can approximate stacked and bidirectional RNNs, outperforming them in some tasks.

DBGAN learns graph node representations by balancing distribution consistency.

problem Graph representation learning overfits due to ignoring data distribution.
method DBGAN uses a structure-aware prior distribution and bidirectional adversarial learning.
result DBGAN achieves better trade-off between robustness and dimensionality.

Paper analyzes and compares ELF algorithms for federated learning.

problem Improving efficiency and privacy in federated learning.
method Proposes P-ELF, D-ELF, and B-ELF algorithms with primal, dual, and bidirectional compression.
result Provides non-asymptotic convergence guarantees under Log-Sobolev inequality.

Bidirectional attention is shown to be equivalent to a continuous bag of words model with mixture-of-experts.

problem Understanding the statistical underpinnings of bidirectional attention.
method Exploring bidirectional attention as a mixture-of-experts model and reparameterizing it.
result Bidirectional attention can be viewed as a continuous bag of words model with mixture-of-experts weights.

Bidirectional sequence generation improves performance in conversational tasks.

problem Neural sequence generation typically considers only past tokens, limiting performance.
method Introduced placeholder tokens that can consider both past and future tokens in sequence generation.
result Bidirectional model outperforms competitive baselines on conversational tasks.

Artemis framework improves distributed learning with bidirectional compression and partial participation.

problem Learning in distributed or federated settings with communication constraints and device partial participation.
method Artemis framework using bidirectional compression, memory mechanism, and Polyak-Ruppert averaging.
result Fast rates of convergence (linear up to a threshold) under weak assumptions on stochastic gradients.

Bidirectional VAE reduces parameters and improves image tasks.

problem Improving image reconstruction, classification, interpolation, and generation.
method Uses a single neural network for both encoding and decoding in both forward and backward directions.
result Bidirectional VAEs reduce parameters by almost 50% and slightly outperform unidirectional VAEs.

New bidirectional model predicts magnetohydrodynamics fields and estimates uncertainty.

problem Predicting multiple fields in magnetohydrodynamics with uncertainty.
method Bidirectional autoregressive latent diffusion approach.
result Model can estimate uncertainty without ground truth using self-supervised consistency.

New method estimates bidirectional causal effects in large-scale systems.

problem Estimating bidirectional causal effects in systems with mutual dependence and heteroskedasticity.
method Heteroskedasticity-based identification with online kernel learning and random Fourier features.
result Superior accuracy and stability compared to single equation and polynomial approximations.

Bidirectional diffusion models predict their own rollout errors without ground truth.

problem Long rollouts accumulate error in autoregressive models, lacking a reliable test-time error signal.
method Train a bidirectional latent diffusion model that steps forward or backward, measuring discrepancies to estimate error.
result Bidirectional consistency Ci\mathcal{C}_i ranks rollout error and predicts magnitude with high accuracy.

Proposes FBFAN to defend against adversarial attacks by learning semantic features.

problem Vulnerability of deep neural networks to adversarial attacks.
method Featurized Bidirectional Generative Adversarial Networks (FBGAN) that learns semantic features and filters non-semantic perturbations.
result FBGAN effectively reconstructs adversarial data to denoised data, improving classifier performance.

BiHRNN predicts inflation by leveraging hierarchical structure and bidirectional RNNs.

problem Accurate inflation forecasting is challenging due to dynamic factors and the layered structure of the Consumer Price Index.
method Bi-directional Hierarchical Recurrent Neural Network (BiHRNN) model that uses bidirectional information flow between levels and informative constraints on RNN parameters.
result BiHRNN significantly outperforms traditional RNN models in forecasting accuracy.

SPID-GAN learns bidirectional mappings in subsurface models.

problem Challenges in identifying and approximating causal structures in high-dimensional parameter spaces.
method Generative adversarial networks (GANs) for learning cross-domain mappings.
result SPID-GAN achieves satisfactory performance in identifying bidirectional state-parameter mappings.

Paper improves communication in distributed optimization, reducing worker-to-server data exchanges.

problem Efficiency in server-to-worker communication in distributed optimization.
method MARINA-P, a novel downlink compression method using correlated compressors; M3, combining MARINA-P with uplink compression.
result MARINA-P achieves provably superior server-to-worker communication complexity with increasing number of workers.

Bidirectional learning improves neural network robustness to noise and attacks.

problem Improving neural network robustness to adversarial and static noise.
method Bidirectional learning (BL) techniques using error propagation and hybrid adversarial networks (HAN).
result Both methods improve robustness and accuracy, with HAN showing state-of-the-art performance.

Chatbot uses BERT to handle financial investment questions, improving accuracy and decision-making.

problem Improving accuracy and decision-making in financial investment customer service.
method Deep Bidirectional Transformer (BERT) model, uncertainty measure comparison, mixed-integer programming, automatic spelling correction.
result Chatbot can recognize 381 intents and decide when to escalate questions.

The paper develops efficient sampling strategies for BRDF data manifolds.

problem Efficiently sampling and measuring BRDF data from high-dimensional manifolds.
method Statistical design of experiments and generalized proactive learning.
result Established more efficient sampling and measurement strategies for BRDF data manifolds.

Unified approach to stabilize adversarial learning for joint distribution matching.

problem Non-identifiability issues in bidirectional adversarial training.
method Unified framework of adversarial and non-adversarial approaches, stabilizing learning.
result Stabilized learning of unsupervised and semi-supervised bidirectional adversarial methods.

A bidirectional loss function improves label distribution learning and enhancement.

problem Challenges in label distribution learning and label enhancement.
method Bidirectional loss function to address dimensional gap and label enhancement.
result The bidirectional loss function improves the accuracy of label distribution learning and enhancement.

Study designs experiments to identify causal graph structure with cycles and latent confounders.

problem Identify causal graph structure with cycles and latent confounders.
method Established lower bounds, developed CI and do see tests algorithms, and proved tightness.
result Proposed algorithms can recover all causal edges except for double adjacent bidirected edges.

A new deep learning method for energy disaggregation.

problem Energy disaggregation or non-intrusive load monitoring (NILM) to identify individual appliance power usage.
method Sequence to Point Learning based on Bidirectional Dilated Residual Network (BRDN).
result Our method outperforms state-of-the-art approaches in all appliances on REDD and UK-DALE datasets.

ICP improves text infilling and POS tagging with valid confidence sets.

problem Statistical reliability of machine learning predictions.
method Inductive conformal prediction algorithms for text infilling and POS tagging.
result Valid set-valued predictions with small size for real-world applications.

Paper improves video feature learning for better downstream tasks.

problem Improving video feature learning for better performance on downstream tasks.
method Self-supervised learning approach using contrastive bidirectional transformer, extending BERT for real-valued feature vectors.
result Significantly improved performance on video classification, captioning, and segmentation tasks.

BIVA uses a deep hierarchy of latent variables for better generative modeling.

problem Performance gap between VAE and autoregressive models in generative modeling.
method BIVA introduces a skip-connected generative model and a bidirectional stochastic inference path.
result BIVA reaches state-of-the-art test likelihoods and generates coherent images.

Improved traffic forecasting model handles missing data.

problem Short-term traffic forecasting with missing values.
method Proposed SBU-LSTM architecture with bidirectional and unidirectional LSTM.
result Superior performance in accuracy and robustness for network-wide traffic prediction.

Proposes a dynamic model for urban traffic volume prediction.

problem Urban traffic volume prediction for better traffic management and driver planning.
method Combines bidirectional LSTM, attention mechanism, and external features.
result Improves prediction precision by 3-7 percent on NYC-Taxi and NYC-Bike datasets.

The paper analyzes e-commerce reviews using RNN for sentiment classification.

problem Understanding customer sentiments in e-commerce reviews.
method Univariate and multivariate analyses on dataset features except review texts. Bidirectional RNN with LSTM implemented for classification.
result Bidirectional LSTM achieved high F1-scores for recommendation and sentiment classification.