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README.md

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-license: cc-by-4.0
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+license: cc-by-4.0
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+# 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*