Computer Vision · Uncertainty · 2023 → 2026
Brain MRI Classifier with Uncertainty
The problem : a model that says "tumor, 95%" isn't safe to trust on its own; a doctor needs to know when it's guessing, so doubtful cases get a second look instead of being trusted blindly.
The solution : every prediction carries its own uncertainty (MC Dropout), and the least-certain scans are handed back to a human. A triage aid, not a diagnosis tool. Grad-CAM confirms it looks at the tumor, not the background.
4.9% → <0.4%error, once the 20% least-certain scans are deferred
~11×more uncertainty on wrong calls than right ones
PyTorchResNetMC DropoutGrad-CAMMLflow