v1.0: ResNet-50, 84.55% on CUB-200-2011 test

Full-image ResNet-50 at 448 px, fine-tuned on all 5,994 CUB-200-2011 training images.

Top-1 on the official test split: 84.55% (4,899 / 5,794).

Recipe: SGD (Nesterov, momentum 0.9, lr 0.01, head lr x10, weight decay 1e-4), cosine schedule, 50 epochs, torchvision ImageNet weights (resnet50.tv_in1k), Resize(512) + RandomCrop(448) + horizontal flip, float16 mixed precision.

File: birdshift_resnet50_448_cub.pth (weights only)
SHA-256: a647b1bbb444ac05985a3bbc2443e79bfb437ee7e83140e1fdafaa4788c1869c

See the README section "Matching the published ResNet-50 number" for loading code and the full comparison.

Note: this is the full-image model; "birdshift" in the file name is the project name. Held-out split models (including BirdShift) are in v1.1.