Search Results for author: Andrew C. Miller

Found 15 papers, 6 papers with code

Label Shift Estimators for Non-Ignorable Missing Data

no code implementations27 Oct 2023 Andrew C. Miller, Joseph Futoma

We consider the problem of estimating the mean of a random variable Y subject to non-ignorable missingness, i. e., where the missingness mechanism depends on Y .

Simulation-based Inference for Cardiovascular Models

no code implementations26 Jul 2023 Antoine Wehenkel, Jens Behrmann, Andrew C. Miller, Guillermo Sapiro, Ozan Sener, Marco Cuturi, Jörn-Henrik Jacobsen

Over the past decades, hemodynamics simulators have steadily evolved and have become tools of choice for studying cardiovascular systems in-silico.

Breiman's two cultures: You don't have to choose sides

no code implementations25 Apr 2021 Andrew C. Miller, Nicholas J. Foti, Emily B. Fox

And while these categories represent extreme points in model space, modern computational and algorithmic tools enable us to interpolate between these points, producing flexible, interpretable, and scientifically-informed hybrids that can enjoy accurate and robust predictions, and resolve issues with data analysis that Breiman describes, such as the Rashomon effect and Occam's dilemma.

Vocal Bursts Valence Prediction

Model-based metrics: Sample-efficient estimates of predictive model subpopulation performance

no code implementations25 Apr 2021 Andrew C. Miller, Leon A. Gatys, Joseph Futoma, Emily B. Fox

We propose using an evaluation model $-$ a model that describes the conditional distribution of the predictive model score $-$ to form model-based metric (MBM) estimates.

Readmission Prediction

Representing and Denoising Wearable ECG Recordings

no code implementations30 Nov 2020 Jeffrey Chan, Andrew C. Miller, Emily B. Fox

In this work, we develop a statistical model to simulate a structured noise process in ECGs derived from a wearable sensor, design a beat-to-beat representation that is conducive for analyzing variation, and devise a factor analysis-based method to denoise the ECG.

Denoising

Learning Insulin-Glucose Dynamics in the Wild

no code implementations6 Aug 2020 Andrew C. Miller, Nicholas J. Foti, Emily Fox

We develop a new model of insulin-glucose dynamics for forecasting blood glucose in type 1 diabetics.

Inductive Bias

A Probabilistic Model of Cardiac Physiology and Electrocardiograms

no code implementations1 Dec 2018 Andrew C. Miller, Ziad Obermeyer, David M. Blei, John P. Cunningham, Sendhil Mullainathan

An electrocardiogram (EKG) is a common, non-invasive test that measures the electrical activity of a patient's heart.

Measuring the Stability of EHR- and EKG-based Predictive Models

no code implementations1 Dec 2018 Andrew C. Miller, Ziad Obermeyer, Sendhil Mullainathan

In a predictive task, we show that EKG-based models can be more stable than EHR-based models across different patient populations.

Approximate Inference for Constructing Astronomical Catalogs from Images

1 code implementation28 Feb 2018 Jeffrey Regier, Andrew C. Miller, David Schlegel, Ryan P. Adams, Jon D. McAuliffe, Prabhat

We present a new, fully generative model for constructing astronomical catalogs from optical telescope image sets.

Variational Inference

Variational Boosting: Iteratively Refining Posterior Approximations

1 code implementation ICML 2017 Andrew C. Miller, Nicholas Foti, Ryan P. Adams

We propose a black-box variational inference method to approximate intractable distributions with an increasingly rich approximating class.

Variational Inference

Recurrent switching linear dynamical systems

1 code implementation26 Oct 2016 Scott W. Linderman, Andrew C. Miller, Ryan P. Adams, David M. Blei, Liam Paninski, Matthew J. Johnson

Many natural systems, such as neurons firing in the brain or basketball teams traversing a court, give rise to time series data with complex, nonlinear dynamics.

Bayesian Inference Time Series +1

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