Focal loss improves repeatability of deep learning modelsDownload PDF

Published: 09 May 2022, Last Modified: 12 May 2023MIDL 2022 Short PapersReaders: Everyone
Keywords: repeatability, focal loss, breast density, knee osteoarthritis, Monte Carlo dropout, medical classification, computer vision
TL;DR: Incorporating focal loss improves the repeatability of deep learning models
Abstract: Deep learning models for clinical diagnosis, prognosis and treatment need to be trustworthy and robust for clinical deployment, given that model predictions often directly inform a subsequent course of action, where individual patient lives are at stake. Central to model robustness is repeatability, or the ability of a model to generate near-identical predictions under identical conditions. In this work, we optimize focal loss as a cost function to improve repeatability of model predictions on two clinically significant classification tasks: knee osteoarthritis grading and breast density classification, with and without the presence of Monte Carlo (MC) Dropout. We discover that in all experimental instances, focal loss improves repeatability of the resulting models, an effect compounded in the presence of MC Dropout.
Registration: I acknowledge that acceptance of this work at MIDL requires at least one of the authors to register and present the work during the conference.
Authorship: I confirm that I am the author of this work and that it has not been submitted to another publication before.
Paper Type: novel methodological ideas without extensive validation
Primary Subject Area: Detection and Diagnosis
Secondary Subject Area: Application: Radiology
Confidentiality And Author Instructions: I read the call for papers and author instructions. I acknowledge that exceeding the page limit and/or altering the latex template can result in desk rejection.
1 Reply