Search Results for author: Kevin P. Nguyen

Found 5 papers, 0 papers with code

Longitudinal Prognosis of Parkinsons Outcomes using Causal Connectivity

no code implementations21 Jun 2022 Cooper J. Mellema, Kevin P. Nguyen, Alex Treacher, Aixa Andrade Hernandez, Albert A. Montillo

Parkinsons disease (PD) is a movement disorder and the second most common neurodengerative disease but despite its relative abundance, there are no clinically accepted neuroimaging biomarkers to make prognostic predictions or differentiate between the similar atypical neurodegenerative diseases Multiple System Atrophy and Progressive Supranuclear Palsy.

Adversarially-regularized mixed effects deep learning (ARMED) models for improved interpretability, performance, and generalization on clustered data

no code implementations23 Feb 2022 Kevin P. Nguyen, Albert Montillo

We propose a general-purpose framework for Adversarially-Regularized Mixed Effects Deep learning (ARMED) models through non-intrusive additions to existing neural networks: 1) an adversarial classifier constraining the original model to learn only cluster-invariant features, 2) a random effects subnetwork capturing cluster-specific features, and 3) an approach to apply random effects to clusters unseen during training.

Architectural configurations, atlas granularity and functional connectivity with diagnostic value in Autism Spectrum Disorder

no code implementations25 Nov 2019 Cooper J. Mellema, Alex Treacher, Kevin P. Nguyen, Albert Montillo

Connectivity features identified as important across all 3 atlas granularity levels include FC to the supplementary motor gyrus and language association cortex, regions associated with deficits in social and sensory processing in ASD.

Feature Importance

Prediction of individual progression rate in Parkinson's disease using clinical measures and biomechanical measures of gait and postural stability

no code implementations22 Nov 2019 Vyom Raval, Kevin P. Nguyen, Ashley Gerald, Richard B. Dewey Jr., Albert Montillo

The primary aim of this study was to develop a model using clinical measures and biomechanical measures of gait and postural stability to predict an individual's PD progression over two years.

BIG-bench Machine Learning Model Optimization

Anatomically-Informed Data Augmentation for functional MRI with Applications to Deep Learning

no code implementations17 Oct 2019 Kevin P. Nguyen, Cherise Chin Fatt, Alex Treacher, Cooper Mellema, Madhukar H. Trivedi, Albert Montillo

This method is tested on a challenging task of predicting antidepressant treatment response from pre-treatment task-based fMRI and demonstrates a 26% improvement in performance in predicting response using augmented images.

Data Augmentation Hyperparameter Optimization

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