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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.

169,291 papers · 148 categories

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3876114152 · Jun 202019922001200920182026
48 results for flexible decoding

InfoVAE improves variational autoencoders by better training inference distributions.

problem Inaccurate amortized inference and latent variable neglect in variational autoencoders.
method Proposes new training objectives (InfoVAE) to improve inference quality and latent feature use.
result Significantly improves variational posterior quality and effective latent feature use.

PH-VAE models heavy-tailed data with flexible Phase-Type distributions.

problem Standard VAEs fail to capture heavy-tailed behavior in real-world data.
method PH-VAE uses Phase-Type distributions defined by continuous-time Markov chains to adaptively model tail behavior.
result PH-VAE significantly outperforms existing heavy-tail-aware VAEs in approximating diverse heavy-tailed distributions.

Improved neural image compression with refined latent representations.

problem Sub-optimal results from variational autoencoders due to imperfect optimization and capacity limitations.
method Stochastic Gumbel Annealing (SGA) and its extensions (SGA+), including three different methods.
result Significant improvement in compression performance, especially on the R-D trade-off.

Transformer adapts to graphs with adaptive attention and auto-regressive decoding.

problem Transformers struggle with graph data due to non-sequential nature.
method Proposes GRAT, a Transformer variant with adaptive attention and auto-regressive decoding.
result GRAT achieves state-of-the-art performance on molecule property predictions and generation tasks.

Memory-augmented neural networks improve machine translation performance.

problem Improving machine translation accuracy and flexibility.
method Evaluation of Neural Turing Machines and Differentiable Neural Computers for machine translation tasks.
result Memory-augmented neural networks perform similarly to attentional encoders on Vietnamese to English tasks but have lower BLEU scores on Romanian to English tasks.

SLED improves factuality in LLMs without external knowledge.

problem Unreliable or factually incorrect outputs from large language models.
method Contrasts final layer logits with early layers' logits, uses approximate gradient to refine outputs.
result Consistently improves factual accuracy over existing methods.

DOS improves language model generation by considering inter-token dependencies.

problem Lack of sequence-level information and inter-token dependencies in existing decoding strategies.
method Dependency-Oriented Sampler (DOS) that uses attention matrices to approximate inter-token dependencies.
result DOS consistently achieves superior performance on code generation and mathematical reasoning tasks.

Meta Fusion integrates various multimodal data fusion strategies into a unified framework.

problem Improving predictive power of machine learning methods across diverse applications.
method Meta Fusion constructs a cohort of models based on latent representations across modalities, sharing soft information to boost performance.
result Meta Fusion consistently outperforms conventional fusion strategies in simulation and real-world applications.

EB-VAE combines tumor growth and dropout data for personalized treatment response modeling.

problem Challenges in integrating longitudinal tumor measurements, dropout information, and genetic covariates.
method Extended EB-VAE framework to jointly model longitudinal and time-to-event data, incorporating dropout hazard and genetic covariates.
result Hybrid decoder formulation yields consistent treatment-effect parameters and prior predictive performance comparable to neural decoder.

EnVAE uses energy score for likelihood-free VAEs, improving image reconstructions.

problem Likelihood misspecification in VAEs leads to blurry reconstructions and poor data fidelity.
method Deterministic decoder, energy score as reconstruction loss, fast variant for efficiency.
result EnVAE achieves superior reconstruction and generation quality compared to likelihood-based baselines.

EDG generates Boltzmann samples from latent variables efficiently.

problem Sampling from complex energy functions in high dimensions.
method Combines variational autoencoders and diffusion models; uses a decoder and diffusion-based encoder.
result EDG outperforms existing methods in various sampling tasks.

VCAE uses vine copulas to improve AE generative models for high-dimensional data.

problem Creating flexible generative models for high-dimensional data.
method Three-step procedure: autoencoder compression, vine copula estimation, and generative model combination.
result VCAEs achieve competitive results compared to standard baselines.

Proposes a variational autoencoder for long-term customer revenue forecasting.

problem Predicting long-term customer revenue from sparse and irregular transaction data.
method Variational Autoencoder (VAE) with flexible latent representation.
result Improves upon latest benchmarks in multiple real-world datasets.

A new encoding framework predicts brain activity from visual stimuli and intrinsic brain connections.

problem Traditional encoding models ignore brain inner states, limiting their performance in natural image identification.
method Proposes a novel encoding framework combining external stimuli and brain inner states, using a forward encoding model and an inner state model.
result The framework achieves better performance on natural image identification from fMRI responses than traditional models.

Turbo-Sim generates models from physics principles, improving interpretability and flexibility.

problem Transforming particle properties from theory to observation in collider physics.
method Maximizes mutual information between input and output, setting loss term weights.
result Mathematically interpretable and flexible generative models.

Flexible XVAE model for efficient spatial extremes simulation.

problem Complex tail dependence structures in spatial extremes processes.
method Variational autoencoder (XVAE) for modeling flexible and non-stationary dependence.
result XVAE provides fast inference and outperforms traditional models in high dimensions.

This research learns disentangled representations using semi-supervised deep generative models.

problem Learning disentangled representations of data.
method Proposes a new model architecture that generalises from VAEs, employing a graphical model structure in the encoder and decoder.
result Demonstrates the ability to learn disentangled representations through semi-supervised learning.

Improves joint distribution learning for high-dimensional datasets with complex correlations.

problem Conditional independence assumption limitations in VAE decoders for high-dimensional datasets.
method Cramer-Wold distance regularization and two-step learning method for flexible prior modeling.
result Effective joint distributional learning for high-dimensional datasets with multiple categorical variables.

AR-Flow VAE improves blind source separation with flexible autoregressive priors.

problem Unsupervised blind source separation of latent signals from mixtures.
method AR-Flow VAE uses autoregressive flows to model latent sources, enhancing flexibility and capturing complex dependencies.
result AR-Flow VAE effectively separates latent sources, demonstrating improved performance over conventional methods.

Study examines how decoding algorithms affect fairness in language generation models.

problem Impact of decoding algorithms on fairness in open-ended language generation.
method Systematic analysis of top-pp, top-kk, and temperature decoding algorithms.
result Decoding algorithms significantly impact fairness across demographic groups.

Flexible model tackles high-dimensional, missing data, and stochastic processes.

problem High-dimensional longitudinal data with structured missingness and unknown measurement time points.
method Latent variable model using Gaussian processes and variational autoencoder.
result Competitive performance on simulated and real datasets.

Paper uses RL to optimize bit-flipping decoding for binary codes.

problem Improving bit-flipping decoding for binary linear codes.
method Mapped iterative decoding algorithms to MDPs for reinforcement learning.
result Learned BF decoders offer performance-complexity trade-offs and near-optimal performance.

PriorVAE uses VAEs to efficiently encode spatial priors for small-area estimation.

problem Efficiently encoding spatial priors for small-area estimation using Gaussian processes.
method Approximating Gaussian process priors with a variational autoencoder (VAE).
result Efficient spatial inference through a low-dimensional latent Gaussian space representation.

Neural networks improve error correction in topological codes.

problem Finding optimal correction of errors in generic stabilizer codes is computationally hard.
method Systematic study of versatile neural-network decoders for topological codes.
result Neural decoders significantly improve error-correction threshold over leading efficient decoders.