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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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48 results for Brain imaging

This research uses Siamese networks to identify partial mouse brain images from the Allen atlas.

problem Identifying precise mouse brain microscopy images from the Allen atlas.
method Siamese Networks with contrastive learning to find corresponding atlas plates for partial images.
result Siamese CNNs achieved 25% TOP-1 and 100% TOP-5 accuracy in identifying brain slices from the Allen atlas.

MarmoNet automates analysis of marmoset brain axonal projections.

problem Automatically detect and segment axonal tracer signals in noisy, cluttered images.
method Uses machine learning, specifically CNNs and image registration, to process and map axonal projections.
result Automated pipeline extracts and maps axonal projections robustly.

New method uses image-level and pixel-level annotations for brain tumor segmentation.

problem Challenges in obtaining pixel-level annotations for brain tumor segmentation.
method Proposes a learning-based framework that combines both pixel- and image-level annotations.
result Method's performance in segmentation quality is competitive with traditional fully-supervised approach.

Modeling disease progression in brain images using monotonic Gaussian Processes.

problem Disentangling spatio-temporal disease trajectories from brain imaging data.
method Spatio-temporal matrix factorization with anatomically plausible priors, monotonic Gaussian Processes, and sparse codes.
result Monotonic Gaussian Processes model realistic disease trajectories in brain imaging data.

Paper presents a brain tumor segmentation method using NGMM and 3D FVF.

problem Automatic brain tumor segmentation from MRIs is challenging.
method Normalized Gaussian Bayesian classifier and 3D Fluid Vector Flow algorithm.
result The method successfully segments brain tumors from MRI images.

The paper generates future brain imaging sequences for Alzheimer's disease detection.

problem Understanding brain aging and neurodegenerative diseases through sequential image data.
method Formulated a min-max problem based on ff-divergence to learn a time series generator using a deep neural network.
result Generated image sequences converge to the latent truth under specific conditions, enhancing downstream tasks like Alzheimer's disease detection.

Novel approach combines local and global brain changes for AD prediction.

problem Detecting Alzheimer's disease through local and global brain changes.
method Patch-based 3D-CNNs combined with global topological features for multi-scale brain tissue connectivity.
result Average precision score of 0.95 for classifying cognitively normal subjects and AD patients (prevalence ~55%).

Local semi-supervised method improves brain tissue classification in child MRI.

problem Inaccurate detection of brain tissue classes due to intensity variations in early developing brains.
method Kernel Fisher Discriminant Analysis (KFDA) combined with SSIM for perceptual image quality assessment.
result Optimal brain partitioning into subdomains with different average intensity values and separating surfaces between brain parts.

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.

Novel method uses image descriptors to harmonize MRI brain volumes across centers.

problem Inconsistencies in MRI brain volume measurements across different centers and scanners.
method Trained a Relevance Vector Machine (RVM) model using image descriptors to harmonize brain volumes.
result Decreases scanner and center variability while preserving measurements for longitudinal studies.

We present a novel approach to automatically segment magnetic resonance (MR) images of the human brain into anatomical regions. Our methodology is based on a deep artificial neural network that assigns each voxel in an MR image of the brain to its corresponding anatomical region. The inputs of the network capture infor…

2015-02-09abs ↗pdf ↗

MRI image quality affects statistical and predictive analysis of brain morphology.

problem Impact of MRI image quality on statistical and predictive analysis of brain morphology.
method Systematic testing of image quality on univariate statistics and machine learning classification using three large datasets.
result Low-quality MRI data significantly affects detecting significant sex/gender differences in smaller samples, but not in larger ones.

Bayesian variational inference improves medical image segmentation confidence.

problem Improving interpretability and confidence in deep learning models for medical image segmentation.
method Encoder-decoder architecture based on variational inference for segmenting brain tumor images.
result The model segments brain tumors with both aleatoric and epistemic uncertainty.

New method uses nuclear and ℓ1 penalties for matrix regression, improving brain disorder detection.

problem Modeling high-dimensional matrix predictors with binary responses.
method Convex optimization with ADMM for low-rank and sparse structures.
result Effective in identifying brain disorder-related connectivity patterns.

StackNet predicts fluid intelligence from brain images of adolescents.

problem Predicting fluid intelligence in adolescents using brain imaging.
method Feature extraction, normalization, denoising, selection, StackNet architecture, 11 models, 3 layers, 10-fold cross-validation.
result StackNet achieves mean squared errors of 82.42 on training/validation and 94.25 on testing.

Imaging neuroscience links brain activation maps to behavior and cognition via correlational studies. Due to the nature of the individual experiments, based on eliciting neural response from a small number of stimuli, this link is incomplete, and unidirectional from the causal point of view. To come to conclusions on t…

2013-11-15abs ↗pdf ↗

ICAM creates interpretable feature attribution maps for brain images.

problem Challenges in predicting class relevance from brain images due to heterogeneity and background variation.
method A VAE-GAN framework for disentangling class relevance from background features.
result FA maps generated by ICAM outperform baseline methods and support phenotype variation exploration.

Deep Triplet Networks improve brain imaging modality recognition with limited data.

problem Efficiently recognizing new imaging modalities with scarce training data.
method Few-shot learning model based on Deep Triplet Networks.
result The model outperforms traditional CNN classifiers in modality recognition with limited data.

Unified VAE for brain aging analysis improves regression accuracy.

problem Applying VAE to supervised learning for brain imaging data.
method Unified probabilistic model for latent space learning with conditional distribution modeling.
result Model predicts age from MR images more accurately than state-of-the-art methods.

Paper reviews neurolinguistics and language technologies, emphasizing mutual enrichment.

problem Understanding brain activity during language processing.
method Brain imaging studies and natural language representations.
result Development of brain-aware natural language representations.

Probabilistic ESI model improves brain activity pattern analysis.

problem Noise sensitivity and lack of time-varying pattern flexibility in traditional ESI methods.
method Hierarchical graph prior with spanning tree constraint and alternating convex search algorithm.
result Significant improvements in source localization performance, especially at high noise levels.

Sparse ELM classifier predicts brain ages from adolescent multimodal brain data.

problem Predicting brain ages from adolescent multimodal brain data with high accuracy.
method Sparse ELM classifier using residual errors for feature pruning.
result RES-ELM classifier outperforms conventional and sparse Bayesian learning ELM.

SpINNEr uses matrix regression to analyze brain connectivity, improving accuracy over other methods.

problem Analyzing multi-dimensional data like brain imaging arrays using traditional scalar regression methods.
method SpINNEr applies matrix regression with nuclear norm and lasso norms to encourage low rank and sparse solutions.
result SpINNEr outperforms other methods in estimating brain connectivity, especially in well-connected regions.

This work improves deep learning models for fMRI by generating realistic brain morphology images.

problem Limited dataset sizes for functional MRI limit the accuracy of deep learning models.
method Proposes a method to generate new fMRI images with realistic brain morphology.
result Demonstrates a 26% improvement in predicting antidepressant treatment response using augmented images.

Generative model predicts multiple brain graphs from one, preserving topology.

problem Predicting multiple brain graphs from a single one, preserving topology.
method MultiGraphGAN architecture, graph adversarial auto-encoder, cluster-specific decoders, topological loss.
result Significantly outperformed variants in multi-view brain graph generation.

Unsupervised neural models predict brain activity better than supervised methods.

problem Understanding how the brain represents visual information without direct supervision.
method Built upon PredNet, used RSA to compare PredNet representations to fMRI and MEG data.
result Unsupervised models trained to predict video frames outperform supervised image classification models in predicting brain activity.