Polygl0t/mc4-50k

mC4 (50K samples per language)

Dataset Summary

This is the multilingual version of the C4 dataset. We only keep 50,000 samples per language for all the 108 languages available. This is intended for educational and experimentation purposes. For the full dataset, please refer to the multilingual config of the allenai/c4 dataset.

How do I download this?

Using 🤗 Datasets

from datasets import load_dataset

# Portuguese only
pt = load_dataset("Polygl0t/mc4-50k", "pt")

# All languages (108)
mc4 = load_dataset("Polygl0t/mc4-50k")

You can also load and mix multiple languages:

from datasets import concatenate_datasets, interleave_datasets, load_dataset

es = load_dataset("Polygl0t/mc4-50k", "es", streaming=True)
fr = load_dataset("Polygl0t/mc4-50k", "fr", streaming=True)

# Concatenate both datasets
concatenated = concatenate_datasets([es, fr])
# Or interleave them (alternates between one and the other)
interleaved = interleave_datasets([es, fr])

Languages

Note that the languages that end with "-Latn" are simply romanized variants, i.e. written using the Latin script.

language code	language name
af	Afrikaans
am	Amharic
ar	Arabic
az	Azerbaijani
be	Belarusian
bg	Bulgarian
bg-Latn	Bulgarian (Latin)
bn	Bangla
ca	Catalan
ceb	Cebuano
co	Corsican
cs	Czech
cy	Welsh
da	Danish
de	German
el	Greek
el-Latn	Greek (Latin)
en	English
eo	Esperanto
es	Spanish
et	Estonian
eu	Basque
fa	Persian
fi	Finnish
fil	Filipino
fr	French
fy	Western Frisian
ga	Irish
gd	Scottish Gaelic
gl	Galician
gu	Gujarati
ha	Hausa
haw	Hawaiian
hi	Hindi
hi-Latn	Hindi (Latin script)
hmn	Hmong, Mong
ht	Haitian
hu	Hungarian
hy	Armenian
id	Indonesian
ig	Igbo
is	Icelandic
it	Italian
iw	former Hebrew
ja	Japanese
ja-Latn	Japanese (Latin)
jv	Javanese
ka	Georgian
kk	Kazakh
km	Khmer
kn	Kannada
ko	Korean
ku	Kurdish
ky	Kyrgyz
la	Latin
lb	Luxembourgish
lo	Lao
lt	Lithuanian
lv	Latvian
mg	Malagasy
mi	Maori
mk	Macedonian
ml	Malayalam
mn	Mongolian
mr	Marathi
ms	Malay
mt	Maltese
my	Burmese
ne	Nepali
nl	Dutch
no	Norwegian
ny	Nyanja
pa	Punjabi
pl	Polish
ps	Pashto
pt	Portuguese
ro	Romanian
ru	Russian
ru-Latn	Russian (Latin)
sd	Sindhi
si	Sinhala
sk	Slovak
sl	Slovenian
sm	Samoan
sn	Shona
so	Somali
sq	Albanian
sr	Serbian
st	Southern Sotho
su	Sundanese
sv	Swedish
sw	Swahili
ta	Tamil
te	Telugu
tg	Tajik
th	Thai
tr	Turkish
uk	Ukrainian
und	Unknown language
ur	Urdu
uz	Uzbek
vi	Vietnamese
xh	Xhosa
yi	Yiddish
yo	Yoruba
zh	Chinese
zh-Latn	Chinese (Latin)
zu	Zulu

Dataset Structure

Data Instances

An example form the en config is:

{
  'text': 'Beginners BBQ Class Taking Place in Missoula!\nDo you want to get better at making delicious BBQ? You will have the opportunity, put this on your calendar now. Thursday, September 22nd join World Class BBQ Champion, Tony Balay from Lonestar Smoke Rangers. He will be teaching a beginner level class for everyone who wants to get better with their culinary skills.\nHe will teach you everything you need to know to compete in a KCBS BBQ competition, including techniques, recipes, timelines, meat selection and trimming, plus smoker and fire information.\nThe cost to be in the class is $35 per person, and for spectators it is free. Included in the cost will be either a t-shirt or apron and you will be tasting samples of each meat that is prepared.'
}

Data Fields

The data have several fields:

• text: text content as a string

Source Data

Initial Data Collection and Normalization

The C4 and mC4 datasets are collections text sourced from the public Common Crawl web scrape. It includes heuristics to extract only natural language (as opposed to boilerplate and other gibberish) in addition to extensive deduplication.

Licensing Information

We are releasing this dataset under the terms of ODC-BY. By using this, you are also bound by the Common Crawl terms of use in respect of the content contained in the dataset.