Can uncertainty boost the reliability of AI-based diagnostic methods in digital pathology?

• URL: http://arxiv.org/abs/2112.09693v1
• Date: Fri, 17 Dec 2021 10:10:00 GMT
• Title: Can uncertainty boost the reliability of AI-based diagnostic methods in digital pathology?
• Authors: Milda Pocevi\v{c}i\=ut\.e, Gabriel Eilertsen, Sofia Jarkman, Claes Lundstr\"om
• Abstract summary: We evaluate if adding uncertainty estimates for DL predictions in digital pathology could result in increased value for the clinical applications. We compare the effectiveness of model-integrated methods (MC dropout and Deep ensembles) with a model-agnostic approach. Our results show that uncertainty estimates can add some reliability and reduce sensitivity to classification threshold selection.
• Score: 3.8424737607413157
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Deep learning (DL) has shown great potential in digital pathology applications. The robustness of a diagnostic DL-based solution is essential for safe clinical deployment. In this work we evaluate if adding uncertainty estimates for DL predictions in digital pathology could result in increased value for the clinical applications, by boosting the general predictive performance or by detecting mispredictions. We compare the effectiveness of model-integrated methods (MC dropout and Deep ensembles) with a model-agnostic approach (Test time augmentation, TTA). Moreover, four uncertainty metrics are compared. Our experiments focus on two domain shift scenarios: a shift to a different medical center and to an underrepresented subtype of cancer. Our results show that uncertainty estimates can add some reliability and reduce sensitivity to classification threshold selection. While advanced metrics and deep ensembles perform best in our comparison, the added value over simpler metrics and TTA is small. Importantly, the benefit of all evaluated uncertainty estimation methods is diminished by domain shift.

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