{"url":"/dataset/nih-cxr-lt","name":"NIH-CXR-LT","full_name":"Long-tailed (LT) NIH ChestXRay14","description_markdown":"NIH-CXR-LT. NIH ChestXRay14 contains over 100,000 chest X-rays labeled with 14 pathologies, plus a “No Findings” class. We construct a single-label, long-tailed version of the NIH ChestXRay14 dataset by introducing five new disease findings described above. The resulting NIH-CXR-LT dataset has 20 classes, including 7 head classes, 10 medium classes, and 3 tail classes. NIH-CXR-LT contains 88,637 images labeled with one of 19 thorax diseases, with 68,058 training and 20,279 test images. The validation and balanced test sets contain 15 and 30 images per class, respectively.","description_withheld":null,"homepage":"https://nihcc.app.box.com/v/ChestXray-NIHCC/folder/174256157515","introduced_date":"2022-08-29","introduced_date_note":null,"introduced_by":{"paper":"/paper/long-tailed-classification-of-thorax-diseases","title":"Long-Tailed Classification of Thorax Diseases on Chest X-Ray: A New Benchmark Study","first_author":"Gregory Holste","url":null},"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"},{"name":"Medical","url":"/datasets/modality/medical"}],"tasks":[{"name":"Image Classification","url":"/task/image-classification","datasets_with_task":"/datasets/task/image-classification"},{"name":"Long-tail Learning","url":"/task/long-tail-learning","datasets_with_task":"/datasets/task/long-tail-learning"},{"name":"Medical Image Classification","url":"/task/medical-image-classification","datasets_with_task":"/datasets/task/medical-image-classification"}],"languages":[],"variants":["NIH-CXR-LT"],"data_loaders":[],"num_papers_in_archive":5,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[{"leaderboard":"/sota/long-tail-learning-on-nih-cxr-lt","task":"Long-tail Learning","dataset_variant":"NIH-CXR-LT","rows":15,"metrics":["Balanced Accuracy"],"first_row_in_archive_order":{"model":"Decoupling (cRT)","paper":"/paper/long-tailed-classification-of-thorax-diseases","metrics":{"Balanced Accuracy":"0.294"},"code_links":[{"title":"vita-group/longtailcxr","url":"https://github.com/vita-group/longtailcxr"}]},"note":"rows are the archive's own order at snapshot; nothing here re-ranks them"}],"papers_with_a_benchmark_row":[{"paper":"/paper/long-tailed-classification-of-thorax-diseases","title":"Long-Tailed Classification of Thorax Diseases on Chest X-Ray: A New Benchmark Study","date":"2022-08-29","rows_on_this_dataset":15,"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."}