{"url":"/dataset/umist-1","name":"UMIST","full_name":null,"description_markdown":"The Sheffield (previously **UMIST**) Face Database consists of 564 images of 20 individuals (mixed race/gender/appearance). Each individual is shown in a range of poses from profile to frontal views – each in a separate directory labelled 1a, 1b, … 1t and images are numbered consecutively as they were taken. The files are all in PGM format, approximately 220 x 220 pixels with 256-bit grey-scale.\n\nSource: [https://www.visioneng.org.uk/datasets/](https://www.visioneng.org.uk/datasets/)\nImage Source: [https://www.visioneng.org.uk/datasets/](https://www.visioneng.org.uk/datasets/)","description_withheld":null,"homepage":"http://eprints.lincoln.ac.uk/id/eprint/16081/","introduced_date":null,"introduced_date_note":null,"introduced_by":null,"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"}],"tasks":[{"name":"Image Clustering","url":"/task/image-clustering","datasets_with_task":"/datasets/task/image-clustering"}],"languages":[],"variants":["UMist","UMIST"],"data_loaders":[],"num_papers_in_archive":3,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[{"leaderboard":"/sota/image-clustering-on-umist","task":"Image Clustering","dataset_variant":"UMist","rows":4,"metrics":["NMI"],"first_row_in_archive_order":{"model":"J-DSSC (Scattered)","paper":"/paper/doubly-stochastic-subspace-clustering","metrics":{"NMI":"0.939"},"code_links":[{"title":"cptq/SubspaceClusteringJulia","url":"https://github.com/cptq/SubspaceClusteringJulia"}]},"note":"rows are the archive's own order at snapshot; nothing here re-ranks them"}],"papers_with_a_benchmark_row":[{"paper":"/paper/doubly-stochastic-subspace-clustering","title":"Doubly Stochastic Subspace Clustering","date":"2020-11-30","rows_on_this_dataset":2,"code_links":1,"syntology":null},{"paper":"/paper/deep-adversarial-subspace-clustering","title":"Deep Adversarial Subspace Clustering","date":"2018-06-01","rows_on_this_dataset":1,"code_links":0,"syntology":null},{"paper":"/paper/joint-unsupervised-learning-of-deep","title":"Joint Unsupervised Learning of Deep Representations and Image Clusters","date":"2016-04-13","rows_on_this_dataset":1,"code_links":3,"syntology":{"read_at":"2026-09-24T18:15:14+00:00","samples_harvested":1,"samples_ran":0,"samples_unverified":1,"pointer_only_for_licence":0,"claim":"Per-sample execution on synthesized fixtures; not a correctness claim."}}],"syntology_totals":{"read_at":"2026-09-24T18:15:14+00:00","papers_with_samples":1,"samples_harvested":1,"samples_ran":0,"samples_unverified":1,"pointer_only_for_licence":0,"papers_with_no_sample_that_ran":1,"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."}