{"url":"/dataset/hjdataset","name":"HJDataset","full_name":null,"description_markdown":"HJDataset is a large dataset of Historical Japanese Documents with Complex Layouts. It contains over 250,000 layout element annotations of seven types. In addition to bounding boxes and masks of the content regions, it also includes the hierarchical structures and reading orders for layout elements. The dataset is constructed using a combination of human and machine efforts. \r\n\r\nSource: [A Large Dataset of Historical Japanese Documents with Complex Layouts](/paper/a-large-dataset-of-historical-japanese)\r\nImage Source: [https://dell-research-harvard.github.io/HJDataset/](https://dell-research-harvard.github.io/HJDataset/)","description_withheld":null,"homepage":"https://dell-research-harvard.github.io/HJDataset/","introduced_date":null,"introduced_date_note":null,"introduced_by":{"paper":"/paper/a-large-dataset-of-historical-japanese","title":"A Large Dataset of Historical Japanese Documents with Complex Layouts","first_author":"Zejiang Shen","url":null},"license":null,"modalities":[{"name":"Images","url":"/datasets/modality/images"},{"name":"Texts","url":"/datasets/modality/texts"}],"tasks":[{"name":"Object Detection","url":"/task/object-detection","datasets_with_task":"/datasets/task/object-detection"},{"name":"Document Layout Analysis","url":"/task/document-layout-analysis","datasets_with_task":"/datasets/task/document-layout-analysis"},{"name":"Active Learning","url":"/task/active-learning","datasets_with_task":"/datasets/task/active-learning"}],"languages":[],"variants":["HJDataset"],"data_loaders":[],"num_papers_in_archive":5,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[],"papers_with_a_benchmark_row":[],"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."}