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Dataset Summary

mMARCO is a multilingual version of the MS MARCO passage ranking dataset. For more information, checkout our papers:

The first (deprecated) version comprises 8 languages: Chinese, French, German, Indonesian, Italian, Portuguese, Russian and Spanish. The current version included translations for Japanese, Dutch, Vietnamese, Hindi and Arabic. The current version is composed of 14 languages (including the original English version).

Supported languages

Language name Language code
English english
Chinese chinese
French french
German german
Indonesian indonesian
Italian italian
Portuguese portuguese
Russian russian
Spanish spanish
Arabic arabic
Dutch dutch
Hindi hindi
Japanese japanese
Vietnamese vietnamese

Dataset Structure

You can load mMARCO dataset by choosing a specific language. We include training triples (query, positive and negative example), the translated collections of documents and queries.

Training triples

>>> dataset = load_dataset('unicamp-dl/mmarco', 'english')
>>> dataset['train'][1]
{'query': 'what fruit is native to australia', 'positive': 'Passiflora herbertiana. A rare passion fruit native to Australia. Fruits are green-skinned, white fleshed, with an unknown edible rating. Some sources list the fruit as edible, sweet and tasty, while others list the fruits as being bitter and inedible.assiflora herbertiana. A rare passion fruit native to Australia. Fruits are green-skinned, white fleshed, with an unknown edible rating. Some sources list the fruit as edible, sweet and tasty, while others list the fruits as being bitter and inedible.', 'negative': 'The kola nut is the fruit of the kola tree, a genus (Cola) of trees that are native to the tropical rainforests of Africa.'}

Queries

>>> dataset = load_dataset('unicamp-dl/mmarco', 'queries-spanish')
>>> dataset['train'][1]
{'id': 634306, 'text': '¿Qué significa Chattel en el historial de crédito'}

Collection

>>> dataset = load_dataset('unicamp-dl/mmarco', 'collection-portuguese')
>>> dataset['collection'][100]
{'id': 100, 'text': 'Antonín Dvorák (1841-1904) Antonin Dvorak era filho de açougueiro, mas ele não seguiu o negócio de seu pai. Enquanto ajudava seu pai a meio tempo, estudou música e se formou na Escola de Órgãos de Praga em 1859.'}

Licensing Information

This dataset is released under Apache license 2.0.

Citation Information

@article{DBLP:journals/corr/abs-2108-13897,
  author       = {Luiz Bonifacio and
                  Israel Campiotti and
                  Roberto de Alencar Lotufo and
                  Rodrigo Frassetto Nogueira},
  title        = {mMARCO: {A} Multilingual Version of {MS} {MARCO} Passage Ranking Dataset},
  journal      = {CoRR},
  volume       = {abs/2108.13897},
  year         = {2021},
  url          = {https://arxiv.org/abs/2108.13897},
  eprinttype    = {arXiv},
  eprint       = {2108.13897},
  timestamp    = {Mon, 20 Mar 2023 15:35:34 +0100},
  biburl       = {https://dblp.org/rec/journals/corr/abs-2108-13897.bib},
  bibsource    = {dblp computer science bibliography, https://dblp.org}
}
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