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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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63126189252 · Jun 202019922001200920182026
48 results for channel variable

New framework improves multivariate time series forecasting by minimizing redundant information.

problem Improving multivariate time series forecasting with deep learning techniques.
method Cross-variable Decorrelation Aware feature Modeling (CDAM) and Temporal correlation Aware Modeling (TAM) to refine Channel-mixing and exploit temporal correlations.
result Significantly surpasses existing models in comprehensive tests.

Quantum models simulate classical channels more efficiently, improving transmission rates.

problem Optimizing quantum models to simulate classical channels more efficiently.
method Examining when and how well quantum simulations of classical channels improve upon classical simulations.
result Quantum simulations can improve upon classical simulation rates.

IETNet identifies important channels for MVTS classification.

problem Multivariate time series classification with blackbox deep networks.
method End-to-end network combining temporal feature extraction, variable selection, and interaction.
result IETNet improves model accuracy and reduces overfitting by identifying and removing non-predictive variables.

New ML models improve VVLC channel characterization for vehicular OWC.

problem Inaccurate channel models for VVLC due to mobility effects.
method Machine learning (ML) models incorporating ambient light, turbulence, and reflection effects.
result ML models predict VVLC channel loss and CFR more accurately than existing methods.

We find minimal sufficient statistics for two variables that preserve mutual information.

problem Preserving mutual information when variables have high dimensionality.
method Developed a method to replace each variable with a lower-dimensional representation while preserving mutual information.
result Minimal sufficient statistics can be used to replace both variables simultaneously, preserving mutual information.

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.

In some speaker recognition scenarios we find conversations recorded simultaneously over multiple channels. That is the case of the interviews in the NIST SRE dataset. To take advantage of that, we propose a modification of the PLDA model that considers two different inter-session variability terms. The first term is t…

2015-11-20abs ↗pdf ↗

Proposes GPCA module for channel attention in CNNs using Gaussian processes.

problem Improving performance in visual tasks through effective channel selection.
method Integrates Gaussian processes into channel attention mechanisms for probabilistic modeling of channel correlations.
result Demonstrates improved performance of GPCA module in end-to-end CNN training.

A method for self-supervised learning of multivariate time series data across varying channels.

problem Labeling multivariate biomedical time series data is laborious and expensive.
method Proposes a multi-view self-supervised learning approach using a message passing neural network to extract a single representation across channels.
result Our method, combined with the TS2Vec loss, outperforms all other methods in most settings.

ReQuestNet simplifies 5G channel estimation with a unified model.

problem Complex channel estimation in 5G systems with varying conditions.
method Unified neural architecture that handles dynamic resource blocks and transmit layers.
result Significantly outperforms legacy methods, achieving up to 10dB gain at high SNRs.

DNAMTA model improves media channel attribution accuracy.

problem Measuring the impact of each advertising channel in multi-channel marketing.
method Deep Neural Net with Attention (DNAMTA) model for multi-touch attribution.
result DNAMTA model outperforms existing methods in conversion prediction and media influence evaluation.

New Bayes' theorem optimizes semantic channels for machine learning.

problem Class imbalance and semantic meaning evolution in natural language.
method Convert Shannon's channel to semantic channel using third kind of Bayes' theorem.
result CM algorithm explains natural language evolution and improves predictive models.

Study neural communication systems with bandwidth-limited channels.

problem Reliable message transmission despite noisy channels.
method Jointly model compression and error correction with neural networks; introduce prior for missing information; use auxiliary latent variables.
result Joint neural communication systems outperform separate models under expected information loss.

A new method detects hidden driving forces in systems with multiple observables.

problem Hidden driving forces in systems with multiple observables cannot be detected by scalar statistics.
method Cross-spectral witness for hidden nonequilibrium.
result Two simultaneously observed channels retain an off-diagonal cross-spectral sector inaccessible to scalar reductions.

This paper explains a mechanism called phase collapse that improves image classification accuracy.

problem Understanding the role of non-linearities and convolutional filters in image classification.
method Demonstrates phase collapse as a mechanism that eliminates spatial variability and linearly separates classes.
result Phase collapse improves classification accuracy, while thresholding operators degrade performance.

A new kernel for multi-output Gaussian processes reduces undesirable scale effects.

problem Predicting multiple output variables simultaneously with Gaussian processes.
method Design a new kernel (MOCSM) using convolution in the spectral domain to model cross channel dependencies.
result MOCSM kernel reduces undesirable scale effects compared to the Multi-Output Spectral Mixture kernel.

The paper explores cost-aware spectrum access strategies in cognitive radio systems.

problem Optimizing spectrum usage in cognitive radio systems with uncertain channel states and costs.
method Discrete time model with sensing and transmission phases, considering random costs and rewards.
result The optimal policy for spectrum access has a recursive double threshold structure, and online algorithms achieve near-optimal performance.

Hybrid deep learning model predicts urban floods with high accuracy.

problem Urban flood prediction and situation awareness using channel network sensors data.
method FastGRNN-FCN hybrid deep learning model trained on Harris County, Texas flood data.
result Test accuracy and F-measure reach 97.8% and 0.792, respectively.

New methods assess neural connectivity to predict cognitive performance.

problem Predict cognitive performance using neural connectivity.
method Two novel approaches for characterizing functional network connectivity from EEG data.
result Fused AUC results of 0.63/0.58/0.61 for digit recall failure and 0.58/0.59/0.54 for sentence recall failure.

This paper uses entropy to derive stock price dynamics and option valuation.

problem Deriving stock price dynamics and option valuation from information constraints.
method Develops an entropic inference framework to derive stochastic processes from information constraints, representing price changes through two channels: continuous and jump.
result The derived dynamics is the Merton jump diffusion, with Geometric Brownian Motion as the no jump limit.

A new channel locality block improves CNN performance.

problem Improving the performance of convolutional neural networks.
method Proposed a variant of Squeeze-and-Excitation block using convolutional layers to learn nearby channel correlation.
result Our C-Local block achieved higher accuracy than the standard SE block on the cifar-10 dataset.

Reduced-channel EEG systems struggle with artifact detection, highlighting the importance of referential channels.

problem Artifact detection in EEG signals with fewer channels.
method Investigated a deep learning algorithm, CNN-LSTM, on various channel configurations.
result False alarms increase dramatically when fewer channels are used, emphasizing the importance of referential channels.

New framework uses MABs for better WLAN performance.

problem Maximizing enterprise WLAN performance with complex AP and station interactions.
method Empowered APs and stations with agents using Thompson sampling to learn optimal channel and AP selection.
result Adaptive framework using MABs outperforms static configurations in various scenarios.

This paper improves sample complexity for tree-structured Ising model learning with noisy data.

problem Learning tree-structured Ising models with noisy data.
method High-probability sample complexity guarantees for structure recovery and predictive learning.
result Sample complexity remains logarithmic in the number of vertices, but depends on noise level.

CM algorithm matches Shannon's and semantic channels for multi-label classification.

problem Tackles label learning and selection for multi-label classification.
method Adheres to maximum semantic information criterion, uses Bayes' theorem, and trains truth functions.
result Shows improved performance and adaptability to changing source distributions.

Proposes dynamic channel pruning during neural network training.

problem Pruning neural networks during training to reduce computational cost and improve efficiency.
method Dynamic channel propagation to update channel utility values and selectively prune channels.
result Our scheme trains and prunes neural networks simultaneously, achieving superior performance.

A new DVAE architecture improves channel estimation by incorporating temporal correlations.

problem Improving the estimation of time-varying channels.
method Introducing k-MemoryMarkovVAE (k-MMVAE) architecture to learn temporal correlations.
result The k-MMVAE aided channel estimator outperforms other ML aided estimators.

Generative diffusion models improve channel sampling from limited data.

problem Challenges in channel modelling and data collection for wireless systems.
method Diffusion model with U-Net architecture for frequency domain synthesis.
result Stable training and diverse high-fidelity samples generated from true channel distribution.

New method uses VAEs for blind channel equalization and decoding.

problem Blind channel equalization and decoding without pilot symbols.
method Variational autoencoders (VAEs) for blind channel equalization and decoding.
result Significant improvement in error rate compared to existing methods.

BestChanID identifies the channel with maximal capacity using training sequences.

problem Identifying the channel with maximal capacity among several discrete memoryless channels.
method Formulated as a multi-armed bandit problem, proposed a capacity estimator, and developed gap-elimination algorithms.
result Guaranteed to output the DMC with the largest capacity with a desired confidence.

A privacy-preserving method for transmitting data over a wiretap channel using generative networks.

problem Privacy protection in communication over a wiretap channel.
method Data-driven approach using variational autoencoder (VAE)-based joint source channel coding (JSCC).
result The approach provides high reconstruction quality at the receiver while confusing the eavesdropper about the latent sensitive attribute.

New adaptive SGD algorithms for federated learning over physical channels.

problem Reducing communication cost in federated learning over physical channels.
method Proposed adaptive federated SGD algorithms considering channel noise and hardware constraints.
result Demonstrated convergence rates adaptive to stochastic gradient noise level.

Paper tackles accurate channel modeling using variational GANs.

problem Accurately learning channel probability distribution functions (PDFs).
method Variational GAN architecture and loss function for stochastic channel modeling.
result Accurately captures stochastic channel behavior with improved PDFs.

New algorithm separates maternal and fetal ECG from two channels in pregnant women.

problem Affordable ECG monitors for maternal-fetal health monitoring.
method Diffusion-based channel selection for accurate separation.
result Algorithm accurately separates maternal and fetal ECG from two channels.