PlantVillage Leaf Disease Classifier (ViT) Fine tuned google/vit base patch16 224 in21k on PlantVillage (38 crop disease classes across 14 crop species). Built as the local screening option for DakiKobo, a French language agricultural advisor for smallholder farmers in Burkina Faso, with the Gemini Vision API retained as fallback for crops this model does not cover. Evaluation Held out test split, not seen during training. Split provenance: training used a parquet mirror ( BrandonFors/Plant Diseases PlantVillage Dataset ), whose 43,456 / 10,849 partition differs from the original leaf grouped 43,596 / 10,709 split. The mirror does not expose leaf id , so leaf grouping could not be verified or reconstructed. PlantVillage contains multiple photographs of the same physical leaf, so images of one leaf may appear on both sides of this split. The figures below are therefore likely optimistic relative to a leaf grouped evaluation. Metric All 38 classes Maize only (n=769) Accuracy 0.9979 0.9844 F1 (macro) 0.9960 0.9785 Per class precision, recall, and F1: per class report.csv in this repo. The overall figure should be read in context. Published PlantVillage accuracies have run 99.3 to 99.8…
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