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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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218435653870 · Jun 202019922001200920172026
48 results for neural mechanisms

New mechanisms from primate vision improve neural network robustness.

problem Demonstrating robust neural networks to small adversarial perturbations.
method Investigated two biologically plausible mechanisms: non-uniform retina sampling and receptive field diversity.
result Non-uniform retina sampling and receptive field diversity improve adversarial robustness.

Paper introduces a Gaussian Process for operator learning in computational mechanics.

problem Efficient and accurate solutions for large datasets with reliable uncertainty quantification.
method Gaussian Process (GP) embedded in a neural operator framework with stochastic dual descent (SDD) algorithm.
result Improves GP resolution independence and scalability for high-dimensional and non-linear systems.

This paper tackles the problem of defending a neural network against adversarial attacks crafted with different norms (in particular \ell_\infty and 2\ell_2 bounded adversarial examples). It has been observed that defense mechanisms designed to protect against one type of attacks often offer poor performance against…

2019-03-25abs ↗pdf ↗

Permutation-equivariant neural networks improve auction mechanisms by reducing regret and sample complexity.

problem Designing optimal auction mechanisms that balance revenue and bidders' regret.
method Introduced permutation-equivariant neural networks to auction mechanisms.
result Permutation-equivariant neural networks decrease expected ex-post regret and improve model generalizability.

Modern neural networks are often augmented with an attention mechanism, which tells the network where to focus within the input. We propose in this paper a new framework for sparse and structured attention, building upon a smoothed max operator. We show that the gradient of this operator defines a mapping from real val…

2017-05-22abs ↗pdf ↗

New mechanism protects neural network weights from privacy attacks during self-supervised learning.

problem Privacy risks during fine-tuning stage of self-supervised learning.
method Proposes a novel differential privacy mechanism using additive logistic noise.
result Reduces membership inference attack accuracy to 50% while maintaining below 5% performance loss.

New neural network improves audio classification accuracy.

problem Challenging audio classification problem in pattern recognition.
method Introduces a Classifier-Attention-Based Convolutional Neural Network (CAB-CNN) with an attention mechanism to reduce classifier complexity.
result Significantly improves audio classification performance, achieving more than 10% improvements.

Identifying computational mechanisms for memorization and retrieval of data is a long-standing problem at the intersection of machine learning and neuroscience. Our main finding is that standard overparameterized deep neural networks trained using standard optimization methods implement such a mechanism for real-valued…

2019-09-26abs ↗pdf ↗

Analyzes unsupervised neural networks using statistical mechanics and Monte Carlo simulations.

problem Understanding computational capabilities of unsupervised neural networks.
method Statistical mechanics approach and Monte Carlo simulations.
result Obtained a phase diagram summarizing network performance.

Deep neural network improves NILM with attention mechanism.

problem Energy disaggregation of individual appliance power demands from aggregate meter readings.
method Regression and classification subnetworks with attention mechanism.
result Proposed model outperforms state-of-the-art on REDD and UK-DALE datasets.

DNNs generalize object recognition in novel orientations via neurons tuned to common features.

problem Understanding how DNNs generalize to objects in novel orientations.
method Training DNNs with familiar objects from multiple viewpoints and analyzing neuron responses.
result DNNs disseminate orientation-invariance from familiar objects to recognize objects in novel orientations.

A hybrid neural network improves robustness in estimating vehicle parameters from noisy data.

problem Estimating parameters of a mechanical vehicle model from noisy acceleration data.
method Introduced a convolutional neural network with two objective functions: naive and hybrid.
result The hybrid objective function outperforms the naive one in robustness on noisy input data.

Physics-informed neural networks improve model accuracy and efficiency.

problem Accurate dynamic models for technical systems are hard to achieve.
method Physics-informed neural ordinary differential equations (PINODE) integrating Lagrangian mechanics.
result Hybrid model combines physical insight and data approximation.

This study approximates neural network features for modeling relations and attention mechanisms.

problem Approximating neural network features for modeling relations and attention mechanisms.
method Analyzes inner products of multi-layer perceptrons for universal approximation of symmetric and asymmetric relation functions.
result Universal approximation of relation functions and attention mechanisms using inner products of neural networks.

Neural Ordinary Differential Equation (Neural ODE) has been proposed as a continuous approximation to the ResNet architecture. Some commonly used regularization mechanisms in discrete neural networks (e.g. dropout, Gaussian noise) are missing in current Neural ODE networks. In this paper, we propose a new continuous ne…

2019-06-05abs ↗pdf ↗

Develops a complexity measure for neural networks based on quantum statistical mechanics.

problem Understanding the relationship between neural network structure and generalization ability.
method Introduces Periodic Spectral Ergodicity (PSE) and cascading PSE (cPSE) to quantify neural network complexity.
result Demonstrates the effectiveness of cPSE in quantifying complexity and guiding NAS.

APD method decomposes neural network parameters into simple, faithful components.

problem Understanding the internal mechanisms learned by neural networks.
method Attribution-based Parameter Decomposition (APD) method.
result Demonstrated effectiveness in recovering features, separating computations, and identifying representations.

EML-CD discovers causal mechanisms from neural networks in a structured way.

problem Extracting causal mechanisms from neural network weights is ill-posed.
method Integrates EML operator into causal structure learning, representing each edge mechanism as a gated EML binary tree.
result Achieves SHD=11.2 +/- 0.4 on real data, matching or outperforming existing methods.

NNs accurately predict energy eigenvalues and other physical phenomena in 1D quantum mechanics.

problem Understanding how neural networks interpret physics.
method Training NNs to predict energy eigenvalues from potentials and testing their ability to generalize.
result NNs can predict physical phenomena not learned during training, indicating a new way of understanding physics.

Paper explains why plateau phenomenon is rare in modern deep learning.

problem Understanding why plateau phenomenon is less common in deep learning.
method Statistical mechanical analysis of neural network learning.
result Data with small and dispersed eigenvalues prevent plateau phenomenon.

A neural network learns from examples and optimizes by dreaming.

problem The gap between training data and biological neural networks' experience.
method Inspired by biological learning, a generalized Hopfield network with Hebbian learning and off-line sleeping mechanisms.
result The network learns from examples, generalizes, and optimizes its storage capacity.

As an important part of speech recognition technology, automatic speech keyword recognition has been intensively studied in recent years. Such technology becomes especially pivotal under situations with limited infrastructures and computational resources, such as voice command recognition in vehicles and robot interact…

2019-07-10abs ↗pdf ↗

New approach for deep neural networks to learn invariance through adversarial forgetting.

problem Learning invariance for deep neural networks in the presence of nuisance and bias factors.
method Adversarial forgetting mechanism to induce amnesia to unwanted data factors.
result State-of-the-art performance in learning invariance across various datasets and tasks.

New framework improves model robustness by focusing on stable relations across environments.

problem Standard supervised learning fails under data distribution shift.
method Gradient-based learning framework derived from the principle of independent causal mechanisms (ICM).
result Models generalize well to unseen scenarios, ignoring unstable relations.

Study explores grokking in neural networks, revealing transition from memorization to generalization.

problem Understanding the transition from memorization to generalization in over-parameterized neural networks.
method Extensive experiments and exploration of various viewpoints on grokking mechanism.
result Sharp transition from no generalization to perfect generalization observed during prolonged training.

Neural HMM with AGA captures multi-scale dynamics in financial markets.

problem Capturing multi-scale temporal dynamics in financial markets.
method Parallel multi-resolution encoders, adaptive gating, and multi-head attention.
result Outperforms fixed-resolution baselines in predicting price movements and liquidity shocks.

GA-Net selectively attends to parts of a sequence for text classification.

problem Inefficient global attention mechanisms on long sequences.
method Gated Attention Network (GA-Net) using an auxiliary network to dynamically select and attend to important parts of the sequence.
result GA-Net achieves better performance with less computation and interpretability.

DIFNET tackles the suspended animation problem in deep graph neural networks.

problem Deep graph neural networks suffer from the suspended animation problem.
method DIFNET uses neural gates and graph residual learning for node hidden state modeling, and includes an attention mechanism for node neighborhood information diffusion.
result DIFNET effectively addresses the suspended animation problem and improves learning performance.

New methods predict language model out-of-distribution behaviors using causal mechanisms.

problem Predicting how language models behave on unseen data.
method Two methods: counterfactual simulation and value probing.
result Both methods achieve high AUC-ROC and outperform causal-agnostic approaches in out-of-distribution settings.