Custom merge of two Hugging Face datasets. The merged dataset itself is not redistributed; see the recipe repo to reproduce: cholpona/pizza-burger-sushi-recipe.
The 138-image test set saturates at 100%. The model was additionally evaluated on 707 unseen burger images from NexaAIalex/Burger that were not used in train or test, alongside a linear-probe baseline — the frozen pretrained google/vit-base-patch16-224 features + a logistic regression head trained on the same 454-image train split. This isolates the contribution of full fine-tuning beyond what the off-the-shelf ImageNet-pretrained features already encode.
model
held-out burger recall
Linear probe (frozen base + LogReg)
97.03% (686 / 707)
This model (full fine-tune)
99.29% (702 / 707)
Note: single-class eval — every image is a burger, so the metric is recall on the burger class on a larger same-source sample, not full multi-class accuracy. It measures at-distribution generalization for one class; it does not measure how the model handles unseen pizza or sushi distributions.
Limitations
100% on the main test split is misleadingly high. The classes are visually distinct and the test set is small (138 images). The held-out burger eval above gives a more honest signal — treat it as the upper bound for in-distribution use.
Trained on only three food classes — any other input is forced into one of them, often with high confidence.
The burger source dataset has no specified license; downstream commercial use should independently verify provenance.