{"url":"/dataset/instre","name":"INSTRE","full_name":null,"description_markdown":"**INSTRE** is a benchmark for INSTance-level visual object REtrieval and REcognition (INSTRE). INSTRE has the following major properties: (1) balanced data scale,\r\n(2) more diverse intraclass instance variations, (3) cluttered and less contextual backgrounds, (4) object localization annotation for each image, (5) well-manipulated double-labelled images for measuring multiple object (within one image) case.\r\n\r\nThe whole dataset is split into three disjoint subsets INSTRE-S1 (for single object case 1), INSTRE-S2 (for single object case 2) and INSTRE-M (for multiple object case). INSTRE-S1 and INSTRE-S2 are collected for measuring single object case, both of which have 100 object classes. INSTRE-S1 contains 11011 images and INSTRE-S2 contains 12059 images.","description_withheld":null,"homepage":"http://123.57.42.89/instre/home.html","introduced_date":"2015-02-02","introduced_date_note":null,"introduced_by":null,"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"}],"tasks":[{"name":"Image Retrieval","url":"/task/image-retrieval","datasets_with_task":"/datasets/task/image-retrieval"}],"languages":[],"variants":["INSTRE"],"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-retrieval-on-instre","task":"Image Retrieval","dataset_variant":"INSTRE","rows":1,"metrics":["MAP"],"first_row_in_archive_order":{"model":"IME layer","paper":"/paper/iterative-manifold-embedding-layer-learned-by","metrics":{"MAP":"82.4"},"code_links":[{"title":"XJhaoren/IME_layer","url":"https://github.com/XJhaoren/IME_layer"}]},"note":"rows are the archive's own order at snapshot; nothing here re-ranks them"}],"papers_with_a_benchmark_row":[{"paper":"/paper/iterative-manifold-embedding-layer-learned-by","title":"Iterative Manifold Embedding Layer Learned by Incomplete Data for Large-scale Image Retrieval","date":"2017-07-14","rows_on_this_dataset":1,"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."}