Search Results for author: Sotirios Tsaftaris

Found 4 papers, 0 papers with code

Debiasing Counterfactuals In the Presence of Spurious Correlations

no code implementations21 Aug 2023 Amar Kumar, Nima Fathi, Raghav Mehta, Brennan Nichyporuk, Jean-Pierre R. Falet, Sotirios Tsaftaris, Tal Arbel

Deep learning models can perform well in complex medical imaging classification tasks, even when basing their conclusions on spurious correlations (i. e. confounders), should they be prevalent in the training dataset, rather than on the causal image markers of interest.

counterfactual Image Generation

Cohort Bias Adaptation in Aggregated Datasets for Lesion Segmentation

no code implementations2 Aug 2021 Brennan Nichyporuk, Jillian Cardinell, Justin Szeto, Raghav Mehta, Sotirios Tsaftaris, Douglas L. Arnold, Tal Arbel

Many automatic machine learning models developed for focal pathology (e. g. lesions, tumours) detection and segmentation perform well, but do not generalize as well to new patient cohorts, impeding their widespread adoption into real clinical contexts.

Lesion Segmentation

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