metadata

license: apache-2.0
language:
  - ar
  - bg
  - bn
  - ca
  - da
  - de
  - el
  - es
  - et
  - fa
  - fi
  - fr
  - gu
  - he
  - hi
  - hr
  - hu
  - id
  - is
  - it
  - ja
  - kn
  - ko
  - lt
  - lv
  - ml
  - mr
  - nl
  - 'no'
  - pa
  - pl
  - pt
  - ro
  - ru
  - sk
  - sl
  - sr
  - sv
  - sw
  - ta
  - te
  - th
  - tr
  - uk
  - ur
  - vi
  - zh
  - zu
task_categories:
  - translation
size_categories:
  - 10K<n<100K
configs:
  - config_name: en-ar_EG
    data_files:
      - split: train
        path: en-ar_EG.jsonl
  - config_name: en-ar_SA
    data_files:
      - split: train
        path: en-ar_SA.jsonl
  - config_name: en-bg_BG
    data_files:
      - split: train
        path: en-bg_BG.jsonl
  - config_name: en-bn_IN
    data_files:
      - split: train
        path: en-bn_IN.jsonl
  - config_name: en-ca_ES
    data_files:
      - split: train
        path: en-ca_ES.jsonl
  - config_name: en-cs_CZ
    data_files:
      - split: train
        path: en-cs_CZ.jsonl
  - config_name: en-da_DK
    data_files:
      - split: train
        path: en-da_DK.jsonl
  - config_name: en-de_DE
    data_files:
      - split: train
        path: en-de_DE.jsonl
  - config_name: en-el_GR
    data_files:
      - split: train
        path: en-el_GR.jsonl
  - config_name: en-es_MX
    data_files:
      - split: train
        path: en-es_MX.jsonl
  - config_name: en-et_EE
    data_files:
      - split: train
        path: en-et_EE.jsonl
  - config_name: en-fa_IR
    data_files:
      - split: train
        path: en-fa_IR.jsonl
  - config_name: en-fi_FI
    data_files:
      - split: train
        path: en-fi_FI.jsonl
  - config_name: en-fil_PH
    data_files:
      - split: train
        path: en-fil_PH.jsonl
  - config_name: en-fr_CA
    data_files:
      - split: train
        path: en-fr_CA.jsonl
  - config_name: en-fr_FR
    data_files:
      - split: train
        path: en-fr_FR.jsonl
  - config_name: en-gu_IN
    data_files:
      - split: train
        path: en-gu_IN.jsonl
  - config_name: en-he_IL
    data_files:
      - split: train
        path: en-he_IL.jsonl
  - config_name: en-hi_IN
    data_files:
      - split: train
        path: en-hi_IN.jsonl
  - config_name: en-hr_HR
    data_files:
      - split: train
        path: en-hr_HR.jsonl
  - config_name: en-hu_HU
    data_files:
      - split: train
        path: en-hu_HU.jsonl
  - config_name: en-id_ID
    data_files:
      - split: train
        path: en-id_ID.jsonl
  - config_name: en-is_IS
    data_files:
      - split: train
        path: en-is_IS.jsonl
  - config_name: en-it_IT
    data_files:
      - split: train
        path: en-it_IT.jsonl
  - config_name: en-ja_JP
    data_files:
      - split: train
        path: en-ja_JP.jsonl
  - config_name: en-kn_IN
    data_files:
      - split: train
        path: en-kn_IN.jsonl
  - config_name: en-ko_KR
    data_files:
      - split: train
        path: en-ko_KR.jsonl
  - config_name: en-lt_LT
    data_files:
      - split: train
        path: en-lt_LT.jsonl
  - config_name: en-lv_LV
    data_files:
      - split: train
        path: en-lv_LV.jsonl
  - config_name: en-ml_IN
    data_files:
      - split: train
        path: en-ml_IN.jsonl
  - config_name: en-mr_IN
    data_files:
      - split: train
        path: en-mr_IN.jsonl
  - config_name: en-nl_NL
    data_files:
      - split: train
        path: en-nl_NL.jsonl
  - config_name: en-no_NO
    data_files:
      - split: train
        path: en-no_NO.jsonl
  - config_name: en-pa_IN
    data_files:
      - split: train
        path: en-pa_IN.jsonl
  - config_name: en-pl_PL
    data_files:
      - split: train
        path: en-pl_PL.jsonl
  - config_name: en-pt_BR
    data_files:
      - split: train
        path: en-pt_BR.jsonl
  - config_name: en-pt_PT
    data_files:
      - split: train
        path: en-pt_PT.jsonl
  - config_name: en-ro_RO
    data_files:
      - split: train
        path: en-ro_RO.jsonl
  - config_name: en-ru_RU
    data_files:
      - split: train
        path: en-ru_RU.jsonl
  - config_name: en-sk_SK
    data_files:
      - split: train
        path: en-sk_SK.jsonl
  - config_name: en-sl_SI
    data_files:
      - split: train
        path: en-sl_SI.jsonl
  - config_name: en-sr_RS
    data_files:
      - split: train
        path: en-sr_RS.jsonl
  - config_name: en-sv_SE
    data_files:
      - split: train
        path: en-sv_SE.jsonl
  - config_name: en-sw_KE
    data_files:
      - split: train
        path: en-sw_KE.jsonl
  - config_name: en-sw_TZ
    data_files:
      - split: train
        path: en-sw_TZ.jsonl
  - config_name: en-ta_IN
    data_files:
      - split: train
        path: en-ta_IN.jsonl
  - config_name: en-te_IN
    data_files:
      - split: train
        path: en-te_IN.jsonl
  - config_name: en-th_TH
    data_files:
      - split: train
        path: en-th_TH.jsonl
  - config_name: en-tr_TR
    data_files:
      - split: train
        path: en-tr_TR.jsonl
  - config_name: en-uk_UA
    data_files:
      - split: train
        path: en-uk_UA.jsonl
  - config_name: en-ur_PK
    data_files:
      - split: train
        path: en-ur_PK.jsonl
  - config_name: en-vi_VN
    data_files:
      - split: train
        path: en-vi_VN.jsonl
  - config_name: en-zh_CN
    data_files:
      - split: train
        path: en-zh_CN.jsonl
  - config_name: en-zh_TW
    data_files:
      - split: train
        path: en-zh_TW.jsonl
  - config_name: en-zu_ZA
    data_files:
      - split: train
        path: en-zu_ZA.jsonl

WMT24++

This repository contains the human translation and post-edit data for the 55 en->xx language pairs released in the publication WMT24++: Expanding the Language Coverage of WMT24 to 55 Languages & Dialects. If you are interested in the MT/LLM system outputs and automatic metric scores, please see MTME. If you are interested in the images of the source URLs for each document, please see here.

Schema

Each language pair is stored in its own jsonl file. Each row is a serialized JSON object with the following fields:

lp: The language pair (e.g., "en-de_DE").
domain: The domain of the source, either "canary", "news", "social", "speech", or "literary".
document_id: The unique ID that identifies the document the source came from.
segment_id: The globally unique ID that identifies the segment.
is_bad_source: A Boolean that indicates whether this source is low quality (e.g., HTML, URLs, emoijs). In the paper, the segments marked as true were removed from the evaluation, and we recommend doing the same.
source: The English source text.
target: The post-edit of original_target. We recommend using the post-edit as the default reference.
original_target: The original reference translation.

Citation

If you use any of the data released in our work, please cite the following paper:

@misc{deutsch2025wmt24expandinglanguagecoverage,
      title={{WMT24++: Expanding the Language Coverage of WMT24 to 55 Languages & Dialects}}, 
      author={Daniel Deutsch and Eleftheria Briakou and Isaac Caswell and Mara Finkelstein and Rebecca Galor and Juraj Juraska and Geza Kovacs and Alison Lui and Ricardo Rei and Jason Riesa and Shruti Rijhwani and Parker Riley and Elizabeth Salesky and Firas Trabelsi and Stephanie Winkler and Biao Zhang and Markus Freitag},
      year={2025},
      eprint={2502.12404},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2502.12404}, 
}

Helpful Python Constants

LANGUAGE_PAIRS = (
    "en-ar_EG", "en-ar_SA", "en-bg_BG", "en-bn_IN", "en-ca_ES", "en-cs_CZ", "en-da_DK", "en-de_DE",
    "en-el_GR", "en-es_MX", "en-et_EE", "en-fa_IR", "en-fi_FI", "en-fil_PH", "en-fr_CA", "en-fr_FR",
    "en-gu_IN", "en-he_IL", "en-hi_IN", "en-hr_HR", "en-hu_HU", "en-id_ID", "en-is_IS", "en-it_IT",
    "en-ja_JP", "en-kn_IN", "en-ko_KR", "en-lt_LT", "en-lv_LV", "en-ml_IN", "en-mr_IN", "en-nl_NL",
    "en-no_NO", "en-pa_IN", "en-pl_PL", "en-pt_BR", "en-pt_PT", "en-ro_RO", "en-ru_RU", "en-sk_SK",
    "en-sl_SI", "en-sr_RS", "en-sv_SE", "en-sw_KE", "en-sw_TZ", "en-ta_IN", "en-te_IN", "en-th_TH",
    "en-tr_TR", "en-uk_UA", "en-ur_PK", "en-vi_VN", "en-zh_CN", "en-zh_TW", "en-zu_ZA",
)

LANGUAGE_BY_CODE = {
    "ar_EG": "Arabic",
    "ar_SA": "Arabic",
    "bg_BG": "Bulgarian",
    "bn_BD": "Bengali",
    "bn_IN": "Bengali",
    "ca_ES": "Catalan",
    "cs_CZ": "Czech",
    "da_DK": "Danish",
    "de_DE": "German",
    "el_GR": "Greek",
    "es_MX": "Spanish",
    "et_EE": "Estonian",
    "fa_IR": "Farsi",
    "fi_FI": "Finnish",
    "fil_PH": "Filipino",
    "fr_CA": "French",
    "fr_FR": "French",
    "gu_IN": "Gujarati",
    "he_IL": "Hebrew",
    "hi_IN": "Hindi",
    "hr_HR": "Croatian",
    "hu_HU": "Hungarian",
    "id_ID": "Indonesian",
    "is_IS": "Icelandic",
    "it_IT": "Italian",
    "ja_JP": "Japanese",
    "kn_IN": "Kannada",
    "ko_KR": "Korean",
    "lt_LT": "Lithuanian",
    "lv_LV": "Latvian",
    "ml_IN": "Malayalam",
    "mr_IN": "Marathi",
    "nl_NL": "Dutch",
    "no_NO": "Norwegian",
    "pa_IN": "Punjabi",
    "pl_PL": "Polish",
    "pt_BR": "Portuguese",
    "pt_PT": "Portuguese",
    "ro_RO": "Romanian",
    "ru_RU": "Russian",
    "sk_SK": "Slovak",
    "sl_SI": "Slovenian",
    "sr_RS": "Serbian",
    "sv_SE": "Swedish",
    "sw_KE": "Swahili",
    "sw_TZ": "Swahili",
    "ta_IN": "Tamil",
    "te_IN": "Telugu",
    "th_TH": "Thai",
    "tr_TR": "Turkish",
    "uk_UA": "Ukrainian",
    "ur_PK": "Urdu",
    "vi_VN": "Vietnamese",
    "zh_CN": "Mandarin",
    "zh_TW": "Mandarin",
    "zu_ZA": "Zulu",
}

REGION_BY_CODE = {
    "ar_EG": "Egypt",
    "ar_SA": "Saudi Arabia",
    "bg_BG": "Bulgaria",
    "bn_BD": "Bangladesh",
    "bn_IN": "India",
    "ca_ES": "Spain",
    "cs_CZ": "Czechia",
    "da_DK": "Denmark",
    "de_DE": "Germany",
    "el_GR": "Greece",
    "es_MX": "Mexico",
    "et_EE": "Estonia",
    "fa_IR": "Iran",
    "fi_FI": "Finland",
    "fil_PH": "Philippines",
    "fr_CA": "Canada",
    "fr_FR": "France",
    "gu_IN": "India",
    "he_IL": "Israel",
    "hi_IN": "India",
    "hr_HR": "Croatia",
    "hu_HU": "Hungary",
    "id_ID": "Indonesia",
    "is_IS": "Iceland",
    "it_IT": "Italy",
    "ja_JP": "Japan",
    "kn_IN": "India",
    "ko_KR": "South Korea",
    "lt_LT": "Lithuania",
    "lv_LV": "Latvia",
    "ml_IN": "India",
    "mr_IN": "India",
    "nl_NL": "Netherlands",
    "no_NO": "Norway",
    "pa_IN": "India",
    "pl_PL": "Poland",
    "pt_BR": "Brazil",
    "pt_PT": "Portugal",
    "ro_RO": "Romania",
    "ru_RU": "Russia",
    "sk_SK": "Slovakia",
    "sl_SI": "Slovenia",
    "sr_RS": "Serbia",
    "sv_SE": "Sweden",
    "sw_KE": "Kenya",
    "sw_TZ": "Tanzania",
    "ta_IN": "India",
    "te_IN": "India",
    "th_TH": "Thailand",
    "tr_TR": "Turkey",
    "uk_UA": "Ukraine",
    "ur_PK": "Pakistan",
    "vi_VN": "Vietnam",
    "zh_CN": "China",
    "zh_TW": "Taiwan",
    "zu_ZA": "South Africa",
}