Search Results for author: Albert Montillo

Found 9 papers, 0 papers with code

Fairness-enhancing mixed effects deep learning improves fairness on in- and out-of-distribution clustered (non-iid) data

no code implementations4 Oct 2023 Adam Wang, Son Nguyen, Albert Montillo

MEDL separately quantifies cluster-invariant fixed effects (FE) and cluster-specific random effects (RE) through the introduction of: 1) a cluster adversary which encourages the learning of cluster-invariant FE, 2) a Bayesian neural network which quantifies the RE, and a mixing function combining the FE an RE into a mixed-effect prediction.

Fairness

UQ-ARMED: Uncertainty quantification of adversarially-regularized mixed effects deep learning for clustered non-iid data

no code implementations29 Nov 2022 Alex Treacher, Kevin Nguyen, Dylan Owens, Daniel Heitjan, Albert Montillo

This work demonstrates the ability to produce readily interpretable statistical metrics for model fit, fixed effects covariance coefficients, and prediction confidence.

Uncertainty Quantification

DC and SA: Robust and Efficient Hyperparameter Optimization of Multi-subnetwork Deep Learning Models

no code implementations24 Feb 2022 Alex H. Treacher, Albert Montillo

We present two novel hyperparameter optimization strategies for optimization of deep learning models with a modular architecture constructed of multiple subnetworks.

Bayesian Optimization Hyperparameter Optimization

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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