Search Results for author: Sebastiano Barbieri

Found 10 papers, 6 papers with code

Synthetic Health-related Longitudinal Data with Mixed-type Variables Generated using Diffusion Models

no code implementations22 Mar 2023 Nicholas I-Hsien Kuo, Louisa Jorm, Sebastiano Barbieri

This paper presents a novel approach to simulating electronic health records (EHRs) using diffusion probabilistic models (DPMs).

Reinforcement Learning (RL)

Synthetic Acute Hypotension and Sepsis Datasets Based on MIMIC-III and Published as Part of the Health Gym Project

no code implementations7 Dec 2021 Nicholas I-Hsien Kuo, Mark Polizzotto, Simon Finfer, Louisa Jorm, Sebastiano Barbieri

These two synthetic datasets comprise vital signs, laboratory test results, administered fluid boluses and vasopressors for 3, 910 patients with acute hypotension and for 2, 164 patients with sepsis in the Intensive Care Unit (ICU).

reinforcement-learning Reinforcement Learning (RL)

Incorporating Uncertainty in Learning to Defer Algorithms for Safe Computer-Aided Diagnosis

1 code implementation17 Aug 2021 Jessie Liu, Blanca Gallego, Sebastiano Barbieri

LDU was evaluated on the diagnosis of myocardial infarction (using discharge summaries), the diagnosis of any comorbidities (using structured data), and the diagnosis of pleural effusion and pneumothorax (using chest x-rays), and compared with 'learning to defer without uncertainty information' (LD) and 'direct triage by uncertainty' (DT) methods.

Predicting cardiovascular risk from national administrative databases using a combined survival analysis and deep learning approach

no code implementations28 Nov 2020 Sebastiano Barbieri, Suneela Mehta, Billy Wu, Chrianna Bharat, Katrina Poppe, Louisa Jorm, Rod Jackson

After excluding people with prior CVD or heart failure, sex-specific deep learning and CPH models were developed to estimate the risk of fatal or non-fatal CVD events within five years.

Survival Analysis

Benchmarking Deep Learning Architectures for Predicting Readmission to the ICU and Describing Patients-at-Risk

1 code implementation21 May 2019 Sebastiano Barbieri, James Kemp, Oscar Perez-Concha, Sradha Kotwal, Martin Gallagher, Angus Ritchie, Louisa Jorm

Methods: Several deep learning architectures making use of attention mechanisms, recurrent layers, neural ordinary differential equations (ODEs), and medical concept embeddings with time-aware attention were trained using publicly available electronic medical record data (MIMIC-III) associated with 45, 298 ICU stays for 33, 150 patients.

Bayesian Inference Benchmarking

Deep Learning How to Fit an Intravoxel Incoherent Motion Model to Diffusion-Weighted MRI

2 code implementations28 Feb 2019 Sebastiano Barbieri, Oliver J. Gurney-Champion, Remy Klaassen, Harriet C. Thoeny

This approach was associated with high consistency between the two readers (ICCs between 50 and 97%), low intersubject variability of estimated parameter values (CVs between 9. 2 and 28. 4), and the lowest error when compared with least-squares and Bayesian approaches.

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