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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.

169,341 papers · 148 categories

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3672108144 · Jun 202019922001200920182026
48 results for BRAIN initiative

ARIMLE optimizes classifier fusion for brain-computer interface.

problem Improving ensemble classifier aggregation performance.
method ARIMLE uses agreement rate to estimate classifier accuracy, then refines a maximum likelihood estimator.
result ARIMLE outperforms majority voting and other methods in brain-computer interface applications.

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.

Estimates differences in brain connectivity graphs using latent variables.

problem Estimating differences in latent variable graphical models.
method Two-stage procedure: initialization and convergence stages using projected alternating gradient descent.
result Nonconvex procedure outperforms existing methods on synthetic and real data.

A new method infers neuronal cell types and their gene expression profiles from brain imaging data.

problem Lack of spatial information in single-cell RNA sequencing data.
method Spatial point process mixture model applied to in situ hybridization images.
result Inferred cell types and gene expression profiles validated with single-cell RNA sequencing data.

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.

Proposes new feature transformation methods for brain interface models.

problem Sub-optimality of feature ranking and selection in brain interface models.
method Introduces maximum mutual information linear and nonlinear transformations.
result Significantly better performance in binary and multi-class decoding analyses.

Trans-Unet predicts brain folding patterns from 3D point-clouds using novel 3D-to-2D transformation.

problem Challenges in learning high-fidelity 3D point-cloud features, including permutation invariance and fine-grained surface reconstruction.
method Transform 3D point-clouds into a 2D grid domain, then use a U-shaped hybrid model with CNNs and self-attention mechanisms.
result Trans-Unet achieves high-resolution predictions of brain patch growth, surpassing existing methods in fidelity and accuracy.

The paper uses neural networks to segment brain tumors and predict patient survival.

problem Brain tumor segmentation and survival prediction.
method Fully convolutional neural network with encoder-decoder architecture, radiomic features, and random forest regression.
result 55.4% classification accuracy for predicting survival of patients with gross-total resection.

New method uses machine learning to estimate drug parameters in brain models.

problem Estimating unknown parameters in complex brain drug models.
method Physics-Informed Neural Networks (PINNs) for inverse problem solving.
result Accurate parameter estimation leads to precise drug concentration profiles.

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.

A CNN on semi-regular meshes classifies brain diseases from MRI scans.

problem Classifying brain diseases from MRI scans.
method Developed a vertex-based graph CNN for semi-regular triangulated meshes.
result Vertex-based graph CNN outperformed spectral graph CNN in classifying MCI and AD.

Deep neural networks map brain lesions to deficits for better brain function understanding.

problem Mapping the functional brain organization from pathological lesions.
method Deep generative neural network architectures, specifically variational convolutional volumetric auto-encoders.
result Our model outperforms established methods in lesion-deficit inference across various scenarios.

The article explores how organisms and machines learn and recognize the world using Bayesian inference and thermodynamics.

problem Understanding how organisms and machines learn and recognize the world.
method Introducing a thermodynamic view of the Bayesian brain hypothesis, using a simple generative model of spiking neural populations.
result The process of Bayesian inference can be quantified using entropy, revealing the perceptual capacity of neural activity.

DIVE models brain disease progression with high spatial resolution.

problem Reconstruct long-term brain pathology from short-term data.
method Clusters vertex-wise biomarker measurements, estimates average trajectories, and identifies disease-specific patterns.
result Reveals distinct patterns of pathology in different diseases and biomarker types.

A novel method automates quality control of fMRI scans, improving accuracy and generalizability.

problem Lack of automated QC for fMRI scans limits clinical neuroscience research.
method Train machine learning classifiers using runtime log features to predict scan quality.
result Classifiers trained on FLAG-QC features outperform previous methods (AUC=0.79 vs AUC=0.56).

Post-processing improves WMH segmentation accuracy from randomly-initialized U-nets.

problem Improving WMH segmentation accuracy from randomly-initialized U-nets.
method Post-processing technique involving thresholding and averaging U-net outputs.
result Superior performance of the proposed post-processing method.

Inspired by brain's modality fusion, this paper detects active speakers from audio and video.

problem Detecting active speakers in noisy environments.
method Inspired by brain's superior colliculus, combines audio and visual data through specialized neural networks and a novel fusion layer.
result Achieved results greatly surpassing initial expectations, confirming the effectiveness of the proposed method.

Paper defines and quantifies interpretability of brain decoding maps.

problem Difficulty in interpreting brain maps derived from multivariate classifiers.
method Theoretical definition of interpretability, decomposition into reproducibility and representativeness, heuristic method for approximating interpretability, multi-objective criterion for model selection.
result Optimizing hyper-parameters based on proposed criterion yields more informative brain maps.

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.

Study evaluates features and classifiers for brain-computer interface tasks.

problem Improving accuracy in brain-computer interface communication.
method Examined six classical features and twelve classifiers across nine datasets.
result Energy in α and η bands, and Bayesian classifier with Gaussian assumption, outperform other methods.

A graph-based method detects abnormal brain connections in functional MRI data.

problem Detecting abnormal brain connections in functional MRI data.
method High-order Graph Auto-Encoder (GAE) with hypersphere distribution for functional data analysis.
result Identifies correlations between affected brain regions and their simultaneous occurrence over time.

DBGDGM models dynamic brain graphs for better understanding brain function.

problem Previous brain graph models ignore temporal dynamics, limiting their usefulness.
method DBGDGM clusters brain regions into evolving communities and learns dynamic node embeddings.
result DBGDGM outperforms baselines in graph generation, dynamic link prediction, and graph classification.

Paper defines interpretability for brain decoding models.

problem Lack of formal definition and quantitative measure for interpretability in brain decoding.
method Proposes a simple definition and combines interpretability with performance into a new criterion for model selection.
result Optimizing hyper-parameters based on the new criterion yields more informative linear models.

Deep learning predicts brain age from raw MRI data with high accuracy and reliability.

problem Predicting brain age from neuroimaging data to assess individual differences in brain aging.
method Convolutional Neural Networks (CNN) applied to raw T1-weighted MRI data.
result Brain-predicted age is a reliable and heritable biomarker of brain aging.

A new kernel measures brain network similarities, improving disease classification.

problem Lack of edge weight information in existing graph kernels for brain connectivity networks.
method Ordinal pattern kernel for weighted brain connectivity networks.
result The ordinal pattern kernel achieves better classification performance than state-of-the-art graph kernels.

Study uses machine learning to classify autism based on brain connectivity variability.

problem Classifying autism using brain functional connectivity.
method Machine learning models trained on brain imaging data from ABIDE database.
result Increased FC variability in brain regions associated with low variability in ASD patients.

New method aligns brain data across individuals for better brain decoding.

problem Inter-individual variability in brain response patterns limits decoder generalization.
method SpectralOT method that embeds cortical geometry into Laplace-Beltrami eigenmodes.
result SpectralOT strikes balance between aligning functional features and preserving anatomical structure.

Study uses simulation-based inference to decode brain activity from synthetic stimuli.

problem Reversing the process of brain activity emulation to recover stimuli or their properties.
method Pairing brain emulator with LLMs to learn a probabilistic mapping from brain maps to stimulus parameters.
result LLMs can serve as controllable stimulus generators and parameters can be recovered from brain maps.

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.

The paper proposes a new model to capture specialized brain regions using mixture of regression experts.

problem Learning a forward mapping that relates stimuli to brain activation assumes all regions respond similarly, ignoring brain specialization.
method Clustering brain regions, learning different linear regression models for each cluster, using a mixture of linear experts.
result The proposed model predicts brain activation more accurately than conventional models.

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.

Predict and classify brain image evolution trajectories from a single MRI timepoint.

problem Diagnosing early mild cognitive impairment (eMCI) from a single MRI scan.
method Supervised and unsupervised learning frameworks that predict and label intensity patch evolution trajectories from a baseline MRI.
result Classification accuracy increased by up to 10% points compared to single timepoint-based methods.