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i'm also curious but my understanding was MNIST pixels are not binary due to some postprocessing artifacts
by whimsicalism 2y ago
i'm also curious but my understanding was MNIST pixels are not binary due to some postprocessing artifacts
- gwern 2y agoOh hm, so they are. I thought they were binary because they used a digital pen to create them, IIRC, and logistic regression is always the baseline; but checking, they technically are grayscale and people don't always binarize them. So I guess information-theoretically, if they are 0-255 valued, then 2 pixels could potentially let you classify pretty well if sufficiently pathological.