| # ================================================================= | |
| # OJ4OCRMT: A Large Multilingual Dataset for OCR-MT Evaluation | |
| # | |
| # Paul McNamee, Kevin Duh, Cameron Carpenter, Ron Colaianni, Nolan | |
| # King, and Kenton Murray. Proceedings of Machine Translation Summit | |
| # XX, Vol. 1: Research Track June 23-27, 2025, Geneva, Switzerland. | |
| # ================================================================= | |
| The OJ4OCRMT dataset contains source PDF files, rendered images in | |
| three resolutions, and text files (both raw extractions, and | |
| sentence-boundary split files). There are two partitions, 'dev' | |
| and 'test'. Each contains over 1,000 pages of content, with | |
| the PDFs, PNGs, and text files available in 23 EU languages. | |
| The dataset is designed to support evaluating systems for translation | |
| of document images between any pair of 23 European languages. | |
| The dev partition contains 1,656 pages from 2022. Of these 1,412 | |
| (85%) are deemed regular; 193 (12%) contain a table; and, 51 (3%) | |
| contain a 'figure'. The test partition contains 1,119 pages, all from | |
| 2023. 979 (87%) are regular; 98 (9%) contain a table; and, 42 (4%) | |
| contain a 'figure'. Note, all 2,772 pages have translations in all 23 | |
| languages. The languages are: Bulgarian, Croatian, Czech, Danish, | |
| Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, | |
| Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, | |
| Slovak, Slovene, Spanish, and Swedish. See the published paper for | |
| details about the dataset. | |
| Each page is identified by a document identifier and a page number. | |
| For example, OJ:C:2022:240 is a document identifier. And page 22 of | |
| that document is available in the dev set. At the time of publication | |
| this URL gives access to that page online: | |
| https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=OJ:C:2022:240:FULL#page=22 | |
| For the page identified above, the released dataset contains: | |
| (a) raw: text obtained from the 'pdftotext' command | |
| dev/OJ:C:2022:240/raw/OJ:C:2022:240:FULL.en.p-22.txt | |
| (b) sbd: normalized text obtained by cleaning the raw text and performing sentence splitting | |
| dev/OJ:C:2022:240/sbd/OJ:C:2022:240:FULL.en.p-22.txt | |
| (c) png72: a PNG image file at 72 dpi resolution | |
| dev/OJ:C:2022:240/png72/OJ:C:2022:240:FULL.en.p-22.png | |
| (d) png150: a PNG image file at 150 dpi resolution | |
| dev/OJ:C:2022:240/png150/OJ:C:2022:240:FULL.en.p-22.png | |
| (e) png300: a PNG image file at 300 dpi resolution | |
| dev/OJ:C:2022:240/png300/OJ:C:2022:240:FULL.en.p-22.png | |
| (f) pdf: a PDF file obtained from the EUR-Lex online portal and using 'pdfseparate' | |
| dev/OJ:C:2022:240/pdf/OJ:C:2022:240:FULL.en.p-22.pdf | |
| Splits for the partitions are in TSV format with two-columns: | |
| docid [tab] page | |
| The eight split files are named {dev,test}.{all,regular,table.figure}.txt | |
| # ================================================================= | |
| # Initial release: 6/16/2025 | |
| # ================================================================= | |