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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.

169,051 papers · 148 categories

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0.3%0.5%0.8%0.5% · Aug 201819922001200920182026
48 results for Pulmonary Hypertension

Generative Adversarial Model improves RV segmentation accuracy in MRI.

problem Accurate segmentation of the right ventricular blood pool from cine MRI sequences.
method Combines FCNN, Gated Recurrent Units (GRU), Generative Adversarial Networks (GAN), and L1 loss function.
result Improves Dice Index and Hausdorff Distance by 0.05 and 3.49 mm respectively.

The paper uses geometric methods to classify medical data histograms.

problem Classifying medical data histograms for disease diagnosis.
method Information geometry of beta distributions for comparing and classifying histograms.
result Geometric tools, particularly negatively curved Fisher information, enable unique mean calculation and K-means classification.

Privacy-preserving synthetic data from EHRs for learning and inference.

problem Sharing sensitive EHR data while maintaining patient privacy.
method Differentially private normalizing flows for density estimation and variational inference.
result Privacy-preserving synthetic data can yield good utility at a reasonable privacy cost.

Models predict patients at risk of uncontrolled hypertension.

problem Identifying patients at risk of uncontrolled hypertension.
method Developed machine learning models (logistic regression and recurrent neural networks) using EHR data.
result Best model achieved AUROC of 0.719, outperforming baseline.

Proposes a novel anomaly detection method for echocardiogram videos.

problem Anomaly detection in echocardiogram videos.
method Dynamic Variational Trajectory Models (TVAE-C, TVAE-R, TVAE-S) trained on healthy infant echocardiogram videos.
result Superior performance in detecting congenital heart defects and pulmonary hypertension.

Develops a model for personalized diabetes and hypertension treatment using robust regression and K-NN.

problem Optimal personalized treatment rules for patients based on EHRs.
method Robust regression informed K-NN approach for predicting and selecting optimal treatments.
result Algorithm leads to larger reduction in HbA1c for diabetics and systolic BP for hypertensive patients compared to alternatives.

The paper tackles optimal policy learning with asymmetric counterfactual utilities in healthcare decisions.

problem Learning optimal policies from observed data with asymmetric counterfactual utilities.
method The approach involves identifying and minimizing the maximum expected utility loss using statistical decision theory and solving intermediate classification problems.
result One can learn minimax loss decision rules from observed data.

This work introduces an integrative approach based on Q-analysis with machine learning. The new approach, called Neural Hypernetwork, has been applied to a case study of pulmonary embolism diagnosis. The objective of the application of neural hyper-network to pulmonary embolism (PE) is to improve diagnose for reducing …

2014-09-19abs ↗pdf ↗

Study uses multi-task Bayesian optimization to speed up SVM hyperparameter tuning for nodules diagnosis.

problem Redundant and time-consuming hyperparameter tuning for SVM classifiers in medical imaging.
method Employed multi-task Bayesian optimization to accelerate hyperparameter search.
result Multi-task Bayesian optimization significantly accelerates hyperparameter search.

Reinforcement learning improves self training for medical image segmentation.

problem Lack of labeled data in medical imaging.
method Integrating reinforcement learning into self training for complex segmentation networks.
result Improved segmentation performance with less labeled data.

Smartphone app diagnoses pulmonary diseases from chest X-rays.

problem Scarcity of training data and class imbalance issues.
method Data Augmentation Generative Adversarial Network (DAGAN) and Convolutional Siamese Network with attention mechanism.
result Achieved 99.30% and 98.40% testing accuracy on Binary/Multiclass scenarios.

Deep learning improves CVD risk prediction from health records.

problem Predicting cardiovascular disease risk from administrative health data.
method Combined survival analysis and deep learning models.
result Deep learning models outperform traditional Cox models in accuracy and explained time-to-event occurrence.

Convolutional Neural Networks (CNNs) require a large amount of annotated data to learn from, which is often difficult to obtain in the medical domain. In this paper we show that the sample complexity of CNNs can be significantly improved by using 3D roto-translation group convolutions (G-Convs) instead of the more conv…

2018-04-12abs ↗pdf ↗

CNNs accurately measure airways and vessels on CT images, improving lung disease diagnosis.

problem Accurately characterizing small pulmonary structures from CT images for disease diagnosis.
method Generative model combined with Convolutional Neural Regressor (CNR) for cross-sectional measurements.
result CNNs provide accurate measurements with physiological correlates.

SAPSAM trains CNNs on lung CTs with binary labels, improving CPA detection and localization.

problem Chronic Pulmonary Aspergillosis (CPA) detection and localization on CT scans using binary labels.
method Binary labels, average intensity projections, 2D RGB-like images, hierarchical CNN architectures.
result High classification accuracy, precise localization, predictive power of 2-year survival.

System converts 3D lung nodule images into embeddings for retrieval.

problem Retrieving similar 3D lung nodule images for radiologist decision support.
method 3D deep learning, semantic representation, transfer learning, similarity score.
result System can measure similarity between nodule annotations and CBIR results.

Study compares estimators for causal mediation analysis with multiple mediators.

problem Estimating causal effects through multiple mediators in observational studies.
method Parametric and non-parametric estimators, including multiply robust and double machine learning approaches.
result Advanced estimators perform well across various settings and real data.

In this paper, we propose a new deep feature selection method based on deep architecture. Our method uses stacked auto-encoders for feature representation in higher-level abstraction. We developed and applied a novel feature learning approach to a specific precision medicine problem, which focuses on assessing and prio…

2017-04-20abs ↗pdf ↗

WEST uses EHRs and expert cases to improve rare disease phenotyping.

problem Limited labeled data for rare diseases.
method Weakly supervised transformer model trained on probabilistic silver-standard labels.
result WEST outperforms existing methods in phenotype classification and subphenotyping.

Proposes a tool to contrast global vs personalized models in clinical prediction.

problem Balancing global vs personalized models in clinical prediction.
method Localized regression approach using autoencoder for dimension reduction.
result Identification of patient subgroups where global models fall short.

Study uses data to analyze COPD patients' impact on hospital systems.

problem Understanding and quantifying resource requirements for COPD patients.
method Combines segmentation, queuing theory, and data recovery techniques.
result Finding useful operational results from incomplete administrative data.

Traditional medicine typically applies one-size-fits-all treatment for the entire patient population whereas precision medicine develops tailored treatment schemes for different patient subgroups. The fact that some factors may be more significant for a specific patient subgroup motivates clinicians and medical researc…

2017-09-26abs ↗pdf ↗

Novel framework detects CKD in diabetic patients using sparse EHR representations.

problem Early detection of CKD in diabetic patients.
method Sparse longitudinal representations of EHR data.
result Proposed model achieves higher predictive performance than baselines.

Lung segmentation from abnormal CXRs using data imputation.

problem Segmenting lungs from CXRs with high opacity caused by respiratory ailments.
method Modified CNN-based segmentation network with deep generative model for data imputation.
result The model can segment lungs from abnormal CXRs, extending to cases with extreme abnormalities.

Paper tackles cost-sensitive diagnosis and learning in healthcare, assigning feature costs based on patient discomfort.

problem Cost-sensitive feature acquisition in healthcare datasets.
method Assigns feature costs based on patient discomfort and provides a method for acquiring a subset of features.
result Comparison of cost-sensitive feature acquisition methods on health datasets.

Chronic obstructive pulmonary disease (COPD) is a lung disease where early detection benefits the survival rate. COPD can be quantified by classifying patches of computed tomography images, and combining patch labels into an overall diagnosis for the image. As labeled patches are often not available, image labels are p…

2017-03-15abs ↗pdf ↗

New methods improve genetic studies of complex diseases.

problem Improving genetic studies of complex diseases using high-dimensional clinical data.
method Evaluation of unsupervised disentangled representation learning methods (autoencoders, VAE, beta-VAE, FactorVAE) for genetic association studies.
result FactorVAEs and beta-VAEs outperform standard VAEs and non-variational autoencoders in genetic studies of asthma and COPD.

Lung cancer is the leading cause of cancer-related death worldwide. Early diagnosis of pulmonary nodules in Computed Tomography (CT) chest scans provides an opportunity for designing effective treatment and making financial and care plans. In this paper, we consider the problem of diagnostic classification between beni…

2018-03-19abs ↗pdf ↗

Improved retinal vessel segmentation with topology preservation trade-off.

problem Retinal vessel segmentation accuracy and topology preservation trade-off.
method Topology preserving term in the loss function and orientation score guided convolutional module.
result Model achieves higher topological accuracy at the expense of lower overlap metrics.

PHASE predicts surgical complications from physiological signals.

problem Predicting adverse surgical outcomes from physiological signals.
method Self-supervised transfer learning for physiological signals.
result PHASE outperforms other approaches in predicting five surgical complications.

An app-based mHealth intervention uses reinforcement learning to send effective reminder notifications.

problem Designing an effective reinforcement learning algorithm for app-based mHealth interventions.
method Developed a reinforcement learning algorithm to send reminder notifications based on participant likelihood of app engagement.
result The algorithm improved app-based mHealth interventions by reducing participant burden and promoting behavior change.

Develops a RNN model to predict obesity status improvement using irregular activity data.

problem Predicting obesity status improvement using irregular activity data.
method Develops a RNN-based time-aware architecture to handle irregular observation times and extract relevant features from longitudinal patient records.
result Achieves an accuracy of 77-86% in predicting obesity status improvement.

Paper introduces a method to learn physics between digital twins using imperfect models.

problem Learning physics from imperfect data and low-fidelity models.
method Bayesian Hierarchical modeling with physics-informed Gaussian processes.
result Models learning between digital twins are less uncertain than independent models but not over-confident.