{"url":"/dataset/df20-mini","name":"DF20 - Mini","full_name":"Danish Fungi 2020 - Mini","description_markdown":"Danish Fungi 2020 (DF20) is a novel fine-grained dataset and benchmark. The dataset, constructed from observations submitted to the Danish Fungal Atlas, is unique in its taxonomy-accurate class labels, small number of errors, highly unbalanced long-tailed class distribution, rich observation metadata, and well-defined class hierarchy. DF20 has zero overlap with ImageNet, allowing unbiased comparison of models fine-tuned from publicly available ImageNet checkpoints.\r\n\r\nSource: [Danish Fungi 2020 - Not Just Another Image Recognition Dataset](https://arxiv.org/pdf/2103.10107v3.pdf)\r\n\r\nImage source: [Danish Fungi 2020 - Not Just Another Image Recognition Dataset](https://arxiv.org/pdf/2103.10107v3.pdf)","description_withheld":null,"homepage":"https://sites.google.com/view/danish-fungi-dataset","introduced_date":"2021-03-18","introduced_date_note":null,"introduced_by":{"paper":"/paper/danish-fungi-2020-not-just-another-image","title":"Danish Fungi 2020 -- Not Just Another Image Recognition Dataset","first_author":"Lukáš Picek","url":null},"license":{"name":"Custom (research-only, non-commercial)","url":"https://github.com/picekl/DanishFungiDataset#license"},"modalities":[{"name":"Images","url":"/datasets/modality/images"}],"tasks":[{"name":"Image Classification","url":"/task/image-classification","datasets_with_task":"/datasets/task/image-classification"}],"languages":[],"variants":["DF20 - Mini"],"data_loaders":[],"num_papers_in_archive":2,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[{"leaderboard":"/sota/image-classification-on-df20-mini","task":"Image Classification","dataset_variant":"DF20 - Mini","rows":19,"metrics":["Top-1","Top-3","F1 - macro"],"first_row_in_archive_order":{"model":"ViT-Large/16 (384)","paper":"/paper/danish-fungi-2020-not-just-another-image","metrics":{"F1 - macro":"0.669","Top-1":"75.85","Top-3":"89.95"},"code_links":[{"title":"picekl/DanishFungiDataset","url":"https://github.com/picekl/DanishFungiDataset"}]},"note":"rows are the archive's own order at snapshot; nothing here re-ranks them"}],"papers_with_a_benchmark_row":[{"paper":"/paper/danish-fungi-2020-not-just-another-image","title":"Danish Fungi 2020 -- Not Just Another Image Recognition Dataset","date":"2021-03-18","rows_on_this_dataset":19,"code_links":1,"syntology":null}],"syntology_totals":{"read_at":"2026-09-24T18:15:14+00:00","papers_with_samples":0,"samples_harvested":0,"samples_ran":0,"samples_unverified":0,"pointer_only_for_licence":0,"papers_with_no_sample_that_ran":0,"note":"the per-paper counts above, summed; not a rate"},"papers_note":"The archive never published its papers-using-dataset list; these are papers with a leaderboard row on this dataset's benchmarks."}