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NCSA staff who would like to submit an item for the calendar can email Digital Transformation Institute Colloquium on Digital Transformation Science Webinar

Event Type
Sponsor Digital Transformation Institute
Jan 14, 2021   3:00 pm  
Claire Donnat, Professor, University of Chicago
Originating Calendar
NCSA-related events

Attend the Digital Transformation Institute Colloquia on Digital Transformation Science Thursday, January 14 at 3:00 pm U.S. Central time. Presenting "A Bayesian Hierarchical Network for Combining Heterogeneous Data Sources in Medical Diagnoses—with Applications to COVID-19" will be Claire Donnat from the University of Chicago.

Registration is required to attend this event.

Abstract: The increasingly widespread use of affordable, yet often less reliable medical data and diagnostic tools poses a new challenge for the field of Computer-Aided Diagnosis: how can we combine multiple sources of information with varying levels of precision and uncertainty to provide an informative diagnosis estimate with confidence bounds? Motivated by a concrete application in lateral flow antibody testing, we devise a Stochastic Expectation-Maximization algorithm that allows the principled integration of heterogeneous and potentially unreliable data types. Our Bayesian formalism is essential in (a) flexibly combining these heterogeneous data sources and their corresponding levels of uncertainty, (b) quantifying the degree of confidence associated with a given diagnostic, and (c) dealing with the missing values that typically plague medical data. We quantify the potential of this approach on simulated data, and showcase its practicality by deploying it on a real COVID19 immunity study.

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