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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.

168,982 papers · 148 categories

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105211316421 · Jun 202019922001200920172026
48 results for mode classification

JRFs improve semi-supervised learning by balancing generation and classification.

problem Mode missing and mode covering issues in GANs and VAEs, and conflict between good classification and generation.
method Joint-stochastic-approximation random fields (JRFs) for deep undirected generative models.
result JRFs achieve good classification and generation results in SSL.

This work proposes a new feature for transportation mode classification using GPS trajectories.

problem Classifying transportation modes from GPS trajectories to optimize urban mobility.
method The Ordinal Pattern Transition Graph and its self-transition probability are used for classification.
result The proposed feature outperforms existing methods in transportation mode classification.

A two-layer classifier improves smartphone transportation mode recognition.

problem Improving accuracy of transportation mode classification.
method Two-layer hierarchical classifier combining time and frequency domain features.
result Maximum classification accuracy of 97.02%.

Hybrid model for multimodal distributions using diffusion and classification.

problem Sampling from multimodal distributions with correct proportions.
method Divide-and-conquer strategy: identify modes, train classifiers, diffusion models, bridge sampling.
result Framework effectively handles multimodal distributions in high dimensions.

Method learns hierarchical representations of samples and features simultaneously.

problem Hierarchical structures in samples and features not considered by existing methods.
method Jointly learns hierarchical representations via Tree-Wasserstein Distance alternating between samples and features.
result Method improves performance in link prediction and node classification tasks.

Ensemble CNNs improve mode classification in smartphone travel surveys.

problem Classifying transportation modes from smartphone travel survey data.
method Developed an ensemble of CNN models with different architectures and hyper-parameters, combined using average voting, majority voting, optimal weights, and a Random Forest meta-learner.
result The ensemble method with Random Forest as meta-learner achieved 91.8% accuracy, surpassing other methods.

Classifies collective motions in biological networks using graph dynamic mode decomposition.

problem Classifying complex collective motions in biological networks based on transient and complexly changing network properties.
method Data-driven spectral analysis (graph dynamic mode decomposition) to extract dynamical properties.
result Contextual node information and physical properties are crucial for classifying collective motions.

Study identifies failure modes of machine learning models in out-of-distribution settings.

problem Machine learning models fail to generalize well to new, unseen data.
method Theoretical study of gradient-descent-trained linear classifiers on easy-to-learn tasks, followed by experiments on modern neural networks.
result Two failure modes of spurious correlations are uncovered: geometric and statistical.

A significantly faster algorithm is presented for the original kNN mode seeking procedure. It has the advantages over the well-known mean shift algorithm that it is feasible in high-dimensional vector spaces and results in uniquely, well defined modes. Moreover, without any additional computational effort it may yield …

2017-12-20abs ↗pdf ↗

A new tensor-based method improves multi-dimensional data classification accuracy.

problem Efficient representation and classification of multi-dimensional data from multiple sensors.
method n-mode generalized difference subspace (n-mode GDS) for tensor data, with improved metric based on geodesic distance.
result The proposed method outperforms existing methods in gesture and action recognition.

Predicting transportation modes from GPS (Global Positioning System) records is a hot topic in the trajectory mining domain. Each GPS record is called a trajectory point and a trajectory is a sequence of these points. Trajectory mining has applications including but not limited to transportation mode detection, tourism…

2018-07-28abs ↗pdf ↗

New method predicts RUL and failure modes from partial data.

problem Predicting RUL and failure modes from incomplete data.
method Formulated as vector General Value Function (GVF) prediction on an absorbing degradation process, using TD(n,λn,λ) for estimation.
result TD improves RUL and failure-mode prediction compared to Monte Carlo methods, especially under scarce complete labels.

The paper explores trading off consistency and dimensionality in convex surrogates for multiclass classification.

problem Designing consistent surrogate losses for multiclass classification with high-dimensional outcomes.
method Investigates embedding outcomes into convex polytopes and examining consistency under low-noise assumptions.
result Consistency can be achieved with less than n1n-1 dimensions, but hallucination occurs for some distributions.

Paper tackles imbalanced time series classification with a novel oversampling method.

problem Imbalanced time series classification challenges due to high dimensionality and correlation.
method Density-ratio based clustering followed by shrinkage technique for covariance estimation, then generating synthetic samples.
result OHIT outperforms state-of-the-art methods in F1, G-mean, and AUC metrics.

Deep learning model predicts protein-ligand binding modes from docking data.

problem Improving protein-ligand binding mode prediction accuracy.
method Dual-graph architecture with separate sub-networks for ligand topology and protein-ligand interactions.
result Deep learning model outperforms docking programs in binding mode prediction.

ACA method improves gradient estimation for neural ODEs, reducing error and training time.

problem Inaccurate gradient estimation methods hinder the performance of neural ODEs on benchmark tasks.
method Adaptive Checkpoint Adjoint (ACA) method that applies trajectory checkpointing, deletes redundant components, and supports adaptive solvers.
result ACA reduces error rate by half and training time by half compared to adjoint and naive methods on image classification tasks.

This paper uses deep learning to classify different types of cracks from acoustic emission events.

problem Classifying different types of cracks from acoustic emission events.
method Combining deep neural networks with Bidirectional Long Short Term Memory and statistical analysis.
result Achieves 92% accuracy in classifying different types of cracks.

A machine learning model improves MV CDSS accuracy.

problem Limited input data for MV CDSS due to missing physiologic monitoring device information.
method Developed a machine learning classifier for 5 MV modes with high accuracy.
result Average F1-score of 97.52% for per-breath classification.

New method decomposes KL error using refined information and mode interactions.

problem Learning probability distributions over discrete variables with higher-order interactions.
method Using information geometry, refined mode interactions, and a novel Monte-Carlo sampling technique.
result Complete decomposition of KL error and efficient data use.

In this work we propose a method for reducing the dimensionality of tensor objects in a binary classification framework. The proposed Common Mode Patterns method takes into consideration the labels' information, and ensures that tensor objects that belong to different classes do not share common features after the redu…

2019-02-06abs ↗pdf ↗

Transfer learning improves chatter detection accuracy with EEMD over WPT.

problem Improving chatter detection accuracy in metal cutting using transfer learning.
method Wavelet Packet Transform (WPT) and Ensemble Empirical Mode Decomposition (EEMD) for feature extraction; Support Vector Machine (SVM), Logistic Regression, Random Forest Classification, and Gradient Boosting with RFE for classification; Transfer learning applied to different turning configurations.
result EEMD outperforms WPT in transfer learning applications, achieving up to 95% accuracy.

This work aims to reduce inexplicable errors in deep neural networks by obtaining class-level semantics and penalizing misclassifications.

problem Deep neural networks misclassify images, leading to inexplicable errors that can harm trust and societal impact.
method Obtain class-level semantics, propose Weighted Loss Functions (WLFs), and train classifiers with these methods.
result Trained networks have more explicable failure modes and comparable accuracy to existing methods.

Study classifies mappings of bivariate normal densities, revealing three types with distinct geometric and statistical properties.

problem Understanding the properties of two-component bivariate normal mixtures.
method Classification via A\mathcal{A}-equivalence and statistical analysis.
result Three distinct types of mappings with specific geometric and statistical properties, and upper bounds for the number of modes.

Motivated by advantages of current-mode design, this brief contribution explores the implementation of weight matrices in neuromemristive systems via current-mode memristor crossbar circuits. After deriving theoretical results for the range and distribution of weights in the current-mode design, it is shown that any we…

2017-07-17abs ↗pdf ↗

Proposes a method to sample from flat basins of posterior distributions in Bayesian deep learning.

problem Sampling from multi-modal posterior distributions leads to overfitting due to trapping in bad modes.
method Introduces an auxiliary guiding variable to bias MCMC sampling towards flat basins of the energy landscape.
result The method converges faster and outperforms existing methods in sampling from flat basins of the posterior.

VINNAS uses variational inference to avoid mode collapse in neural architecture search.

problem Mode collapse in gradient-based NAS methods, leading to suboptimal architectures.
method Differentiable variational inference with variational dropout and automatic relevance determination.
result State-of-the-art accuracy with up to twice fewer non-zero parameters.

Mathematical analysis shows annealing prevents mode collapse in Gaussian mixtures.

problem Mode collapse in variational inference for multimodal distributions.
method Analyzed annealing strategies for Gaussian mixtures, derived formulas, and tested on neural networks.
result Appropriately chosen annealing schemes can robustly prevent mode collapse.

Generative model creates diverse neural network weights efficiently.

problem Creating high-performance and diverse weights for neural networks.
method Trains a hypernetwork mapping latent vectors to high-performance weights, balancing accuracy and diversity.
result Generated weights form a diverse manifold, improving classification accuracy.

Randomized fiber projections enhance neural network accuracy.

problem Improving neural network performance with limited resources.
method Training neural networks on randomized speckled images from multi-mode fiber projectors.
result Classification accuracy is higher with randomized fiber data than with direct images.

Parsimonious Dynamic Mode Decomposition selects sparse modes robustly.

problem Manual tuning of sparsity parameters in traditional DMD.
method Time-delay embedding and Orthogonal Matching Pursuit.
result Autonomously determines optimally sparse subset of modes.

Proposes hinge-Wasserstein to improve uncertainty estimation in regression tasks.

problem Estimating multimodal aleatoric uncertainty in regression tasks from images.
method Regression-by-classification paradigm with hinge-Wasserstein loss.
result Hinge-Wasserstein loss improves uncertainty estimation on challenging tasks.

A new, efficient kk-modes algorithm improves clustering of categorical data.

problem Clustering categorical data using existing methods like kk-means is inefficient.
method Developed a novel kk-modes algorithm called OTQT, which improves on existing methods.
result OTQT finds more accurate clusters per iteration and is faster overall.

Multimodal clustering is an unsupervised technique for mining interesting patterns in nn-adic binary relations or nn-mode networks. Among different types of such generalized patterns one can find biclusters and formal concepts (maximal bicliques) for 2-mode case, triclusters and triconcepts for 3-mode case, closed $n…

2017-02-27abs ↗pdf ↗